2026-05-18-17-40-02 构建导丝分割Web系统

scripts/generate_sample.py

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+from __future__ import annotations
+
+from pathlib import Path
+
+import cv2
+import numpy as np
+
+
+ROOT = Path(__file__).resolve().parents[1]
+SAMPLE_DIR = ROOT / "storage" / "samples"
+
+
+def draw_curve(frame: np.ndarray, t: int) -> None:
+    height, width = frame.shape[:2]
+    points = []
+    for x in np.linspace(48, width - 54, 110):
+        y = height * 0.55 + 48 * np.sin((x / width) * 2.8 * np.pi + t * 0.11)
+        y += 22 * np.sin((x / width) * 7.2 * np.pi + t * 0.035)
+        points.append([int(x), int(y)])
+    pts = np.array(points, dtype=np.int32).reshape((-1, 1, 2))
+    cv2.polylines(frame, [pts], False, (36, 36, 36), 2, cv2.LINE_AA)
+    cv2.circle(frame, tuple(points[-1]), 5, (24, 24, 24), -1, cv2.LINE_AA)
+
+
+def make_frame(index: int, width: int = 640, height: int = 420) -> np.ndarray:
+    rng = np.random.default_rng(index)
+    base = np.full((height, width), 156, dtype=np.uint8)
+    gradient = np.linspace(-22, 18, width, dtype=np.float32)
+    base = np.clip(base.astype(np.float32) + gradient[None, :], 0, 255).astype(np.uint8)
+    noise = rng.normal(0, 7, (height, width)).astype(np.float32)
+    base = np.clip(base.astype(np.float32) + noise, 0, 255).astype(np.uint8)
+    frame = cv2.cvtColor(base, cv2.COLOR_GRAY2BGR)
+
+    for offset in range(-160, width, 130):
+        center = (offset + index * 2, height // 2)
+        cv2.ellipse(frame, center, (90, 180), 8, 0, 360, (176, 176, 176), 8, cv2.LINE_AA)
+
+    cv2.line(frame, (80, 60), (560, 86 + index % 18), (90, 90, 90), 4, cv2.LINE_AA)
+    draw_curve(frame, index)
+    frame = cv2.GaussianBlur(frame, (3, 3), 0)
+    return frame
+
+
+def main() -> None:
+    SAMPLE_DIR.mkdir(parents=True, exist_ok=True)
+    video_path = SAMPLE_DIR / "synthetic_guidewire.mp4"
+    image_path = SAMPLE_DIR / "synthetic_guidewire.png"
+    width, height = 640, 420
+    writer = cv2.VideoWriter(str(video_path), cv2.VideoWriter_fourcc(*"mp4v"), 12.0, (width, height))
+    for index in range(72):
+        frame = make_frame(index, width, height)
+        if index == 12:
+            cv2.imwrite(str(image_path), frame)
+        writer.write(frame)
+    writer.release()
+    print(video_path)
+    print(image_path)
+
+
+if __name__ == "__main__":
+    main()

scripts/generate_sample.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+python3 scripts/generate_sample.py

scripts/run_dev.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+python3 -m uvicorn backend.main:app --host 0.0.0.0 --port "${PORT:-8000}"