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f88f9bdbb9
- 前端按 polygonRingCounts 维护外圈/内洞 ring 分组，中空 mask 在调整多边形时显示内洞顶点和插点手柄。 - 保存与回显标注时将中空结构拆分为 mask_data.polygons 和 mask_data.holes，导入/普通 mask 共享同一编辑体验。 - 自动传播 seed 携带 holes，SAM 2 seed 栅格化时扣除内洞，避免中空 mask 以实心形式传播。 - 传播结果轮廓提取改为保留层级内洞，并在同步传播和 Celery 传播落库时写回 holes 与 hasHoles。 - 传播 seed 签名纳入 holes，并加固保存结果时 holes 与原始 polygon 索引对齐。 - 补充前端保存/回显、Canvas 内洞编辑和后端 SAM 2 hole 处理测试。 - 更新 AGENTS、接口契约、需求冻结、设计冻结和测试计划文档，移除中空结构未实现的旧描述。
691 lines
27 KiB
Python
691 lines
27 KiB
Python
"""SAM 2 engine wrapper with lazy loading and explicit runtime status."""
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import logging
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import os
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from dataclasses import dataclass
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from pathlib import Path
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from typing import Optional
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import numpy as np
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from config import settings
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logger = logging.getLogger(__name__)
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DEFAULT_SAM2_MODEL_ID = "sam2.1_hiera_tiny"
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@dataclass(frozen=True)
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class SAM2Variant:
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"""One selectable SAM 2.1 runtime variant."""
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id: str
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label: str
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short_label: str
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config: str
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legacy_config: str
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checkpoint_filename: str
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legacy_checkpoint_filename: str
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SAM2_VARIANTS: dict[str, SAM2Variant] = {
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"sam2.1_hiera_tiny": SAM2Variant(
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id="sam2.1_hiera_tiny",
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label="SAM 2.1 Tiny",
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short_label="tiny",
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config="configs/sam2.1/sam2.1_hiera_t.yaml",
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legacy_config="configs/sam2/sam2_hiera_t.yaml",
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checkpoint_filename="sam2.1_hiera_tiny.pt",
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legacy_checkpoint_filename="sam2_hiera_tiny.pt",
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),
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"sam2.1_hiera_small": SAM2Variant(
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id="sam2.1_hiera_small",
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label="SAM 2.1 Small",
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short_label="small",
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config="configs/sam2.1/sam2.1_hiera_s.yaml",
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legacy_config="configs/sam2/sam2_hiera_s.yaml",
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checkpoint_filename="sam2.1_hiera_small.pt",
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legacy_checkpoint_filename="sam2_hiera_small.pt",
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),
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"sam2.1_hiera_base_plus": SAM2Variant(
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id="sam2.1_hiera_base_plus",
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label="SAM 2.1 Base+",
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short_label="base+",
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config="configs/sam2.1/sam2.1_hiera_b+.yaml",
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legacy_config="configs/sam2/sam2_hiera_b+.yaml",
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checkpoint_filename="sam2.1_hiera_base_plus.pt",
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legacy_checkpoint_filename="sam2_hiera_base_plus.pt",
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),
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"sam2.1_hiera_large": SAM2Variant(
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id="sam2.1_hiera_large",
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label="SAM 2.1 Large",
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short_label="large",
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config="configs/sam2.1/sam2.1_hiera_l.yaml",
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legacy_config="configs/sam2/sam2_hiera_l.yaml",
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checkpoint_filename="sam2.1_hiera_large.pt",
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legacy_checkpoint_filename="sam2_hiera_large.pt",
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),
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}
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SAM2_MODEL_ALIASES = {
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"sam2": DEFAULT_SAM2_MODEL_ID,
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"sam2.1": DEFAULT_SAM2_MODEL_ID,
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"sam2_tiny": DEFAULT_SAM2_MODEL_ID,
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}
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# ---------------------------------------------------------------------------
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# Attempt to import PyTorch and SAM 2; fall back to stubs if unavailable.
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# ---------------------------------------------------------------------------
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try:
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import torch
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TORCH_AVAILABLE = True
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except Exception as exc: # noqa: BLE001
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TORCH_AVAILABLE = False
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torch = None # type: ignore[assignment]
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logger.warning("PyTorch import failed (%s). SAM2 will be unavailable.", exc)
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try:
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from sam2.build_sam import build_sam2
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from sam2.build_sam import build_sam2_video_predictor
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from sam2.sam2_image_predictor import SAM2ImagePredictor
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SAM2_AVAILABLE = True
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logger.info("SAM2 library imported successfully.")
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except Exception as exc: # noqa: BLE001
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SAM2_AVAILABLE = False
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logger.warning("SAM2 import failed (%s). Using stub engine.", exc)
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class SAM2Engine:
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"""Lazy-loaded SAM 2 inference engine."""
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def __init__(self) -> None:
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self._predictors: dict[str, Optional[SAM2ImagePredictor]] = {}
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self._video_predictors: dict[str, object | None] = {}
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self._model_loaded: dict[str, bool] = {}
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self._video_model_loaded: dict[str, bool] = {}
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self._loaded_device: dict[str, str] = {}
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self._last_error: dict[str, str | None] = {}
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self._video_last_error: dict[str, str | None] = {}
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# -----------------------------------------------------------------------
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# Internal helpers
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# -----------------------------------------------------------------------
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def variant_ids(self) -> list[str]:
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return list(SAM2_VARIANTS.keys())
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def normalize_model_id(self, model_id: str | None) -> str:
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selected = (model_id or settings.sam_default_model or DEFAULT_SAM2_MODEL_ID).lower()
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selected = SAM2_MODEL_ALIASES.get(selected, selected)
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if selected not in SAM2_VARIANTS:
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raise ValueError(f"Unsupported SAM2 model: {model_id}")
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return selected
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def is_sam2_model(self, model_id: str | None) -> bool:
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try:
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self.normalize_model_id(model_id)
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return True
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except ValueError:
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return False
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def _models_dir(self) -> Path:
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configured_path = Path(settings.sam_model_path)
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return configured_path.parent if configured_path.parent else Path("models")
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def _variant(self, model_id: str | None) -> SAM2Variant:
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return SAM2_VARIANTS[self.normalize_model_id(model_id)]
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def _checkpoint_config(self, model_id: str | None) -> tuple[str, str]:
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variant_id = self.normalize_model_id(model_id)
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variant = SAM2_VARIANTS[variant_id]
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models_dir = self._models_dir()
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candidates: list[tuple[str, str]] = []
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configured_path = Path(settings.sam_model_path)
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if variant_id == DEFAULT_SAM2_MODEL_ID and configured_path.is_file():
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candidates.append((settings.sam_model_config, str(configured_path)))
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candidates.extend([
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(variant.config, str(models_dir / variant.checkpoint_filename)),
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(variant.legacy_config, str(models_dir / variant.legacy_checkpoint_filename)),
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])
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for config, checkpoint_path in candidates:
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if os.path.isfile(checkpoint_path):
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return config, checkpoint_path
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return candidates[0]
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def _load_model(self, model_id: str | None = None) -> None:
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"""Load the SAM 2 model and predictor on first use."""
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variant_id = self.normalize_model_id(model_id)
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if self._model_loaded.get(variant_id):
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return
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if not TORCH_AVAILABLE:
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self._last_error[variant_id] = "PyTorch is not installed."
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logger.warning("PyTorch not available; skipping SAM2 model load.")
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self._model_loaded[variant_id] = True
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return
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if not SAM2_AVAILABLE:
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self._last_error[variant_id] = "sam2 package is not installed."
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logger.warning("SAM2 not available; skipping model load.")
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self._model_loaded[variant_id] = True
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return
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config, checkpoint_path = self._checkpoint_config(variant_id)
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if not os.path.isfile(checkpoint_path):
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self._last_error[variant_id] = f"SAM2 checkpoint not found: {checkpoint_path}"
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logger.error("SAM checkpoint not found at %s", checkpoint_path)
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self._model_loaded[variant_id] = True
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return
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try:
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device = self._best_device()
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model = build_sam2(
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config,
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checkpoint_path,
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device=device,
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)
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self._predictors[variant_id] = SAM2ImagePredictor(model)
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self._model_loaded[variant_id] = True
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self._loaded_device[variant_id] = device
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self._last_error[variant_id] = None
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logger.info("SAM 2 model %s loaded from %s on %s", variant_id, checkpoint_path, device)
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except Exception as exc: # noqa: BLE001
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self._last_error[variant_id] = str(exc)
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logger.error("Failed to load SAM 2 model %s: %s", variant_id, exc)
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self._model_loaded[variant_id] = True # Prevent repeated load attempts
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def _load_video_model(self, model_id: str | None = None) -> None:
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"""Load the SAM 2 video predictor on first propagation use."""
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variant_id = self.normalize_model_id(model_id)
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if self._video_model_loaded.get(variant_id):
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return
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if not TORCH_AVAILABLE:
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self._video_last_error[variant_id] = "PyTorch is not installed."
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self._video_model_loaded[variant_id] = True
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return
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if not SAM2_AVAILABLE:
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self._video_last_error[variant_id] = "sam2 package is not installed."
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self._video_model_loaded[variant_id] = True
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return
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config, checkpoint_path = self._checkpoint_config(variant_id)
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if not os.path.isfile(checkpoint_path):
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self._video_last_error[variant_id] = f"SAM2 checkpoint not found: {checkpoint_path}"
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self._video_model_loaded[variant_id] = True
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return
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try:
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device = self._best_device()
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self._video_predictors[variant_id] = build_sam2_video_predictor(
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config,
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checkpoint_path,
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device=device,
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)
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self._video_model_loaded[variant_id] = True
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self._loaded_device[variant_id] = device
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self._video_last_error[variant_id] = None
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logger.info("SAM 2 video predictor %s loaded from %s on %s", variant_id, checkpoint_path, device)
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except Exception as exc: # noqa: BLE001
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self._video_last_error[variant_id] = str(exc)
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self._video_model_loaded[variant_id] = True
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logger.error("Failed to load SAM 2 video predictor %s: %s", variant_id, exc)
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def _best_device(self) -> str:
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if TORCH_AVAILABLE and torch is not None and torch.cuda.is_available():
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return "cuda"
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return "cpu"
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def _ensure_ready(self, model_id: str | None = None) -> bool:
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"""Ensure the model is loaded; return whether it is usable."""
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variant_id = self.normalize_model_id(model_id)
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self._load_model(variant_id)
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return SAM2_AVAILABLE and self._predictors.get(variant_id) is not None
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def _ensure_video_ready(self, model_id: str | None = None) -> bool:
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"""Ensure the video predictor is loaded; return whether it is usable."""
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variant_id = self.normalize_model_id(model_id)
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self._load_video_model(variant_id)
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return SAM2_AVAILABLE and self._video_predictors.get(variant_id) is not None
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def status(self, model_id: str | None = None) -> dict:
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"""Return lightweight, real runtime status without forcing model load."""
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variant_id = self.normalize_model_id(model_id)
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variant = SAM2_VARIANTS[variant_id]
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_, checkpoint_path = self._checkpoint_config(variant_id)
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checkpoint_exists = os.path.isfile(checkpoint_path)
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using_legacy_checkpoint = Path(checkpoint_path).name == variant.legacy_checkpoint_filename
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predictor = self._predictors.get(variant_id)
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device = self._loaded_device.get(variant_id) or self._best_device()
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available = bool(TORCH_AVAILABLE and SAM2_AVAILABLE and checkpoint_exists)
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if predictor is not None:
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message = f"{variant.label} model loaded and ready."
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elif available:
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message = f"{variant.label} dependencies and checkpoint are present; model will load on first inference."
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if using_legacy_checkpoint:
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message += " Using legacy SAM 2 checkpoint fallback."
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else:
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missing = []
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if not TORCH_AVAILABLE:
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missing.append("PyTorch")
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if not SAM2_AVAILABLE:
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missing.append("sam2 package")
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if not checkpoint_exists:
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missing.append("checkpoint")
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message = f"{variant.label} unavailable: missing {', '.join(missing)}."
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last_error = self._last_error.get(variant_id)
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if last_error and not predictor:
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message = last_error
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return {
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"id": variant.id,
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"label": variant.label,
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"available": available,
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"loaded": predictor is not None,
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"device": device,
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"supports": ["point", "box", "interactive", "auto", "propagate"],
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"message": message,
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"package_available": SAM2_AVAILABLE,
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"checkpoint_exists": checkpoint_exists,
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"checkpoint_path": checkpoint_path,
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"python_ok": True,
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"torch_ok": TORCH_AVAILABLE,
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"cuda_required": False,
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}
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# -----------------------------------------------------------------------
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# Public API
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# -----------------------------------------------------------------------
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def predict_points(
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self,
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model_id: str | None,
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image: np.ndarray,
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points: list[list[float]],
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labels: list[int],
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) -> tuple[list[list[list[float]]], list[float]]:
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"""Run point-prompt segmentation.
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Args:
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image: HWC numpy array (uint8).
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points: List of [x, y] normalized coordinates (0-1).
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labels: 1 for foreground, 0 for background.
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Returns:
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Tuple of (polygons, scores).
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"""
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variant_id = self.normalize_model_id(model_id)
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if not self._ensure_ready(variant_id):
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logger.warning("SAM2 not ready; returning dummy masks.")
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return self._dummy_polygons(image.shape[1], image.shape[0]), [0.5]
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try:
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predictor = self._predictors[variant_id]
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h, w = image.shape[:2]
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pts = np.array([[p[0] * w, p[1] * h] for p in points], dtype=np.float32)
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lbls = np.array(labels, dtype=np.int32)
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with torch.inference_mode(): # type: ignore[name-defined]
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predictor.set_image(image)
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masks, scores, _ = predictor.predict(
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point_coords=pts,
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point_labels=lbls,
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multimask_output=False,
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)
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polygons = []
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for m in masks:
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poly = self._mask_to_polygon(m)
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if poly:
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polygons.append(poly)
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return polygons, scores.tolist()
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except Exception as exc: # noqa: BLE001
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logger.error("SAM2 point prediction failed: %s", exc)
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return self._dummy_polygons(image.shape[1], image.shape[0]), [0.5]
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def predict_box(
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self,
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model_id: str | None,
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image: np.ndarray,
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box: list[float],
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) -> tuple[list[list[list[float]]], list[float]]:
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"""Run box-prompt segmentation.
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Args:
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image: HWC numpy array (uint8).
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box: [x1, y1, x2, y2] normalized coordinates.
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Returns:
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Tuple of (polygons, scores).
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"""
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variant_id = self.normalize_model_id(model_id)
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if not self._ensure_ready(variant_id):
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logger.warning("SAM2 not ready; returning dummy masks.")
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return self._dummy_polygons(image.shape[1], image.shape[0]), [0.5]
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try:
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predictor = self._predictors[variant_id]
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h, w = image.shape[:2]
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bbox = np.array(
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[box[0] * w, box[1] * h, box[2] * w, box[3] * h],
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dtype=np.float32,
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)
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with torch.inference_mode(): # type: ignore[name-defined]
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predictor.set_image(image)
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masks, scores, _ = predictor.predict(
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box=bbox[None, :],
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multimask_output=False,
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)
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polygons = []
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for m in masks:
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poly = self._mask_to_polygon(m)
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if poly:
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polygons.append(poly)
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return polygons, scores.tolist()
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except Exception as exc: # noqa: BLE001
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logger.error("SAM2 box prediction failed: %s", exc)
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return self._dummy_polygons(image.shape[1], image.shape[0]), [0.5]
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def predict_interactive(
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self,
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model_id: str | None,
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image: np.ndarray,
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box: list[float] | None,
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points: list[list[float]],
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labels: list[int],
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) -> tuple[list[list[list[float]]], list[float]]:
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"""Run combined box and point prompt segmentation for refinement."""
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variant_id = self.normalize_model_id(model_id)
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if not self._ensure_ready(variant_id):
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logger.warning("SAM2 not ready; returning dummy masks.")
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return self._dummy_polygons(image.shape[1], image.shape[0]), [0.5]
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try:
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predictor = self._predictors[variant_id]
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h, w = image.shape[:2]
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bbox = None
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if box:
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bbox = np.array(
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[box[0] * w, box[1] * h, box[2] * w, box[3] * h],
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dtype=np.float32,
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)
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pts = None
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lbls = None
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if points:
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pts = np.array([[p[0] * w, p[1] * h] for p in points], dtype=np.float32)
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lbls = np.array(labels, dtype=np.int32)
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with torch.inference_mode(): # type: ignore[name-defined]
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predictor.set_image(image)
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masks, scores, _ = predictor.predict(
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point_coords=pts,
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point_labels=lbls,
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box=bbox,
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multimask_output=False,
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)
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polygons = []
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for m in masks:
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poly = self._mask_to_polygon(m)
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if poly:
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polygons.append(poly)
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return polygons, scores.tolist()
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except Exception as exc: # noqa: BLE001
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logger.error("SAM2 interactive prediction failed: %s", exc)
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return self._dummy_polygons(image.shape[1], image.shape[0]), [0.5]
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def predict_auto(self, model_id: str | None, image: np.ndarray) -> tuple[list[list[list[float]]], list[float]]:
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"""Run automatic mask generation (grid of points).
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|
|
Args:
|
|
image: HWC numpy array (uint8).
|
|
|
|
Returns:
|
|
Tuple of (polygons, scores).
|
|
"""
|
|
variant_id = self.normalize_model_id(model_id)
|
|
if not self._ensure_ready(variant_id):
|
|
logger.warning("SAM2 not ready; returning dummy masks.")
|
|
return self._dummy_polygons(image.shape[1], image.shape[0]), [0.5]
|
|
|
|
try:
|
|
predictor = self._predictors[variant_id]
|
|
with torch.inference_mode(): # type: ignore[name-defined]
|
|
predictor.set_image(image)
|
|
# Generate a uniform 16x16 grid of point prompts
|
|
h, w = image.shape[:2]
|
|
grid = np.mgrid[0:1:17j, 0:1:17j].reshape(2, -1).T
|
|
pts = grid * np.array([w, h])
|
|
lbls = np.ones(pts.shape[0], dtype=np.int32)
|
|
|
|
masks, scores, _ = predictor.predict(
|
|
point_coords=pts,
|
|
point_labels=lbls,
|
|
multimask_output=False,
|
|
)
|
|
|
|
polygons = []
|
|
for m in masks[:1]:
|
|
poly = self._mask_to_polygon(m)
|
|
if poly:
|
|
polygons.append(poly)
|
|
|
|
return polygons, scores[:1].tolist()
|
|
except Exception as exc: # noqa: BLE001
|
|
logger.error("SAM2 auto prediction failed: %s", exc)
|
|
return self._dummy_polygons(image.shape[1], image.shape[0]), [0.5]
|
|
|
|
def propagate_video(
|
|
self,
|
|
model_id: str | None,
|
|
frame_paths: list[str],
|
|
source_frame_index: int,
|
|
seed: dict,
|
|
direction: str = "forward",
|
|
max_frames: int | None = None,
|
|
) -> list[dict]:
|
|
"""Propagate one seed mask across a prepared frame directory with SAM 2 video."""
|
|
variant_id = self.normalize_model_id(model_id)
|
|
if not self._ensure_video_ready(variant_id):
|
|
raise RuntimeError(self._video_last_error.get(variant_id) or self.status(variant_id)["message"])
|
|
video_predictor = self._video_predictors[variant_id]
|
|
if not frame_paths:
|
|
return []
|
|
if source_frame_index < 0 or source_frame_index >= len(frame_paths):
|
|
raise ValueError("source_frame_index is outside the frame sequence.")
|
|
|
|
import cv2
|
|
|
|
source_image = cv2.imread(frame_paths[source_frame_index])
|
|
if source_image is None:
|
|
raise RuntimeError("Failed to decode source frame for SAM 2 propagation.")
|
|
height, width = source_image.shape[:2]
|
|
seed_mask = self._polygons_to_mask(seed.get("polygons") or [], width, height, seed.get("holes") or [])
|
|
if not seed_mask.any():
|
|
bbox = seed.get("bbox")
|
|
if isinstance(bbox, list) and len(bbox) == 4:
|
|
seed_mask = self._bbox_to_mask(bbox, width, height)
|
|
if not seed_mask.any():
|
|
raise ValueError("SAM 2 propagation requires a non-empty seed polygon or bbox.")
|
|
|
|
inference_state = video_predictor.init_state(
|
|
video_path=os.path.dirname(frame_paths[0]),
|
|
offload_video_to_cpu=True,
|
|
offload_state_to_cpu=True,
|
|
)
|
|
video_predictor.add_new_mask(
|
|
inference_state,
|
|
frame_idx=source_frame_index,
|
|
obj_id=1,
|
|
mask=seed_mask,
|
|
)
|
|
|
|
results: dict[int, dict] = {}
|
|
|
|
def collect(reverse: bool) -> None:
|
|
for out_frame_idx, out_obj_ids, out_mask_logits in video_predictor.propagate_in_video(
|
|
inference_state,
|
|
start_frame_idx=source_frame_index,
|
|
max_frame_num_to_track=max_frames,
|
|
reverse=reverse,
|
|
):
|
|
masks = out_mask_logits
|
|
if hasattr(masks, "detach"):
|
|
masks = masks.detach().cpu().numpy()
|
|
masks = np.asarray(masks)
|
|
if masks.ndim == 4:
|
|
masks = masks[:, 0]
|
|
polygons = []
|
|
holes = []
|
|
scores = []
|
|
for mask in masks:
|
|
mask_polygons, mask_holes = self._mask_to_polygon_data(mask > 0)
|
|
for polygon_index, polygon in enumerate(mask_polygons):
|
|
polygons.append(polygon)
|
|
holes.append(mask_holes[polygon_index] if polygon_index < len(mask_holes) else [])
|
|
scores.append(1.0)
|
|
results[int(out_frame_idx)] = {
|
|
"frame_index": int(out_frame_idx),
|
|
"polygons": polygons,
|
|
"holes": holes,
|
|
"scores": scores,
|
|
"object_ids": [int(obj_id) for obj_id in list(out_obj_ids)],
|
|
}
|
|
|
|
normalized_direction = direction.lower()
|
|
if normalized_direction in {"forward", "both"}:
|
|
collect(reverse=False)
|
|
if normalized_direction in {"backward", "both"}:
|
|
collect(reverse=True)
|
|
|
|
try:
|
|
video_predictor.reset_state(inference_state)
|
|
except Exception: # noqa: BLE001
|
|
pass
|
|
return [results[index] for index in sorted(results)]
|
|
|
|
# -----------------------------------------------------------------------
|
|
# Helpers
|
|
# -----------------------------------------------------------------------
|
|
@staticmethod
|
|
def _mask_to_polygon(mask: np.ndarray) -> list[list[float]]:
|
|
"""Convert a binary mask to a normalized polygon."""
|
|
polygons, _holes = SAM2Engine._mask_to_polygon_data(mask)
|
|
return polygons[0] if polygons else []
|
|
|
|
@staticmethod
|
|
def _mask_to_polygon_data(mask: np.ndarray) -> tuple[list[list[list[float]]], list[list[list[list[float]]]]]:
|
|
"""Convert a binary mask to normalized outer polygons and aligned hole rings."""
|
|
import cv2
|
|
|
|
if mask.dtype != np.uint8:
|
|
mask = (mask > 0).astype(np.uint8)
|
|
contours, hierarchy = cv2.findContours(mask, cv2.RETR_CCOMP, cv2.CHAIN_APPROX_SIMPLE)
|
|
h, w = mask.shape[:2]
|
|
if hierarchy is None:
|
|
return [], []
|
|
|
|
def contour_to_polygon(contour: np.ndarray) -> list[list[float]]:
|
|
if len(contour) < 3:
|
|
return []
|
|
return [[float(pt[0][0]) / w, float(pt[0][1]) / h] for pt in contour]
|
|
|
|
hierarchy_rows = hierarchy[0]
|
|
outer_indices = [
|
|
index for index, row in enumerate(hierarchy_rows)
|
|
if int(row[3]) < 0 and len(contours[index]) >= 3
|
|
]
|
|
outer_indices.sort(key=lambda index: cv2.contourArea(contours[index]), reverse=True)
|
|
|
|
polygons: list[list[list[float]]] = []
|
|
holes: list[list[list[list[float]]]] = []
|
|
for outer_index in outer_indices:
|
|
outer = contour_to_polygon(contours[outer_index])
|
|
if not outer:
|
|
continue
|
|
child_index = int(hierarchy_rows[outer_index][2])
|
|
hole_group: list[list[list[float]]] = []
|
|
while child_index >= 0:
|
|
hole = contour_to_polygon(contours[child_index])
|
|
if hole:
|
|
hole_group.append(hole)
|
|
child_index = int(hierarchy_rows[child_index][0])
|
|
polygons.append(outer)
|
|
holes.append(hole_group)
|
|
return polygons, holes
|
|
|
|
@staticmethod
|
|
def _dummy_polygons(w: int, h: int) -> list[list[list[float]]]:
|
|
"""Return a dummy rectangle polygon for fallback mode."""
|
|
return [
|
|
[
|
|
[0.25, 0.25],
|
|
[0.75, 0.25],
|
|
[0.75, 0.75],
|
|
[0.25, 0.75],
|
|
]
|
|
]
|
|
|
|
@staticmethod
|
|
def _polygons_to_mask(
|
|
polygons: list[list[list[float]]],
|
|
width: int,
|
|
height: int,
|
|
holes_by_polygon: list[list[list[list[float]]]] | None = None,
|
|
) -> np.ndarray:
|
|
import cv2
|
|
|
|
mask = np.zeros((height, width), dtype=np.uint8)
|
|
for polygon_index, polygon in enumerate(polygons):
|
|
if len(polygon) < 3:
|
|
continue
|
|
pts = np.array(
|
|
[
|
|
[
|
|
int(round(min(max(float(x), 0.0), 1.0) * max(width - 1, 1))),
|
|
int(round(min(max(float(y), 0.0), 1.0) * max(height - 1, 1))),
|
|
]
|
|
for x, y in polygon
|
|
],
|
|
dtype=np.int32,
|
|
)
|
|
cv2.fillPoly(mask, [pts], 1)
|
|
holes = holes_by_polygon[polygon_index] if holes_by_polygon and polygon_index < len(holes_by_polygon) else []
|
|
for hole in holes:
|
|
if len(hole) < 3:
|
|
continue
|
|
hole_pts = np.array(
|
|
[
|
|
[
|
|
int(round(min(max(float(x), 0.0), 1.0) * max(width - 1, 1))),
|
|
int(round(min(max(float(y), 0.0), 1.0) * max(height - 1, 1))),
|
|
]
|
|
for x, y in hole
|
|
],
|
|
dtype=np.int32,
|
|
)
|
|
cv2.fillPoly(mask, [hole_pts], 0)
|
|
return mask.astype(bool)
|
|
|
|
@staticmethod
|
|
def _bbox_to_mask(bbox: list[float], width: int, height: int) -> np.ndarray:
|
|
x, y, w, h = [min(max(float(value), 0.0), 1.0) for value in bbox]
|
|
left = int(round(x * max(width - 1, 1)))
|
|
top = int(round(y * max(height - 1, 1)))
|
|
right = int(round(min(x + w, 1.0) * max(width - 1, 1)))
|
|
bottom = int(round(min(y + h, 1.0) * max(height - 1, 1)))
|
|
mask = np.zeros((height, width), dtype=bool)
|
|
mask[top:max(bottom + 1, top + 1), left:max(right + 1, left + 1)] = True
|
|
return mask
|
|
|
|
|
|
# Singleton instance
|
|
sam_engine = SAM2Engine()
|