2026-05-20-02-32-47 支持NII导出包与分割类别范围

This commit is contained in:
2026-05-20 02:40:50 +08:00
parent 66ad99f996
commit 68fb0cb564
7 changed files with 469 additions and 29 deletions

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@@ -9,6 +9,8 @@ import { fileURLToPath } from 'node:url';
type ProjectStatus = 'pending' | 'completed' | 'processing';
type DicomPlane = 'axial' | 'sagittal' | 'coronal';
type DicomDisplayMode = 'default' | 'bone' | 'soft' | 'contrast';
type ProjectExportTarget = 'dicom' | 'segmentation' | 'pose';
type SegmentationExportScope = 'all' | 'visible';
interface ModuleStyleRecord {
visible: boolean;
@@ -772,7 +774,20 @@ function fillExportRows(data: Buffer, width: number, height: number, slice: numb
});
}
function createSegmentationData(project: ProjectRecord, volume: DicomHuVolume, pose: ModelPoseValue) {
function getModuleStyle(project: ProjectRecord, fileName: string, index: number): ModuleStyleRecord {
return project.moduleStyles[fileName] ?? {
visible: true,
color: defaultModuleColors[index % defaultModuleColors.length],
opacity: 0.72,
partId: index + 1,
};
}
function isModuleIncludedForExport(style: ModuleStyleRecord, scope: SegmentationExportScope) {
return scope === 'all' || style.visible !== false;
}
function createSegmentationData(project: ProjectRecord, volume: DicomHuVolume, pose: ModelPoseValue, scope: SegmentationExportScope = 'visible') {
const data = Buffer.alloc(volume.width * volume.height * volume.depth);
const previews = (project.stlFiles ?? []).reduce<Record<string, ModelPreviewRecord>>((accumulator, fileName) => {
const filePath = path.join(modelDir, fileName);
@@ -803,14 +818,9 @@ function createSegmentationData(project: ProjectRecord, volume: DicomHuVolume, p
(project.stlFiles ?? []).forEach((fileName, index) => {
const payload = previews[fileName];
const style = project.moduleStyles[fileName] ?? {
visible: true,
color: defaultModuleColors[index % defaultModuleColors.length],
opacity: 0.72,
partId: index + 1,
};
const style = getModuleStyle(project, fileName, index);
if (!payload || style.visible === false) {
if (!payload || !isModuleIncludedForExport(style, scope)) {
return;
}
@@ -872,6 +882,55 @@ function createSegmentationData(project: ProjectRecord, volume: DicomHuVolume, p
return data;
}
function createSegmentationLabelMetadata(project: ProjectRecord, scope: SegmentationExportScope, activePose?: ModelPoseValue) {
const labels = (project.stlFiles ?? [])
.map((fileName, index) => {
const style = getModuleStyle(project, fileName, index);
if (!isModuleIncludedForExport(style, scope)) {
return null;
}
const name = fileName.replace(/\.stl$/i, '');
const label = clampNumber(Math.round(style.partId || index + 1), 1, 255);
return {
label,
partId: label,
name,
categoryName: name,
className: name,
fileName,
color: style.color,
opacity: style.opacity,
visible: style.visible !== false,
};
})
.filter((item): item is {
label: number;
partId: number;
name: string;
categoryName: string;
className: string;
fileName: string;
color: string;
opacity: number;
visible: boolean;
} => Boolean(item));
return Buffer.from(JSON.stringify({
project: {
id: project.id,
name: project.name,
dicomPath: project.dicomPath,
modelPath: project.modelPath,
},
generatedAt: now(),
segmentationScope: scope,
activePose: activePose ?? null,
labels,
note: 'Label values correspond to ReVoxelSeg STL component hierarchy partId values.',
}, null, 2), 'utf8');
}
function parseModelPoseQuery(raw: unknown) {
if (typeof raw !== 'string' || !raw.trim()) {
return undefined;
@@ -884,13 +943,37 @@ function parseModelPoseQuery(raw: unknown) {
}
}
function createNiftiExport(project: ProjectRecord, files: string[], target: 'dicom' | 'segmentation', compressed: boolean, pose?: ModelPoseValue) {
function parseSegmentationScope(raw: unknown): SegmentationExportScope {
return raw === 'all' ? 'all' : 'visible';
}
function parseExportTargets(raw: unknown): ProjectExportTarget[] {
const values = typeof raw === 'string' ? raw.split(',') : [];
const targets = values.filter((value): value is ProjectExportTarget => (
value === 'dicom' || value === 'segmentation' || value === 'pose'
));
return [...new Set(targets)];
}
function createNiftiExport(
project: ProjectRecord,
files: string[],
target: 'dicom' | 'segmentation',
compressed: boolean,
pose?: ModelPoseValue,
segmentationScope: SegmentationExportScope = 'visible',
) {
const volume = readDicomHuVolume(files);
if (target === 'dicom') {
return createNiftiBuffer(volume, volume.data, 'dicom', compressed);
}
return createNiftiBuffer(volume, createSegmentationData(project, volume, pose ?? defaultModelPose), 'segmentation', compressed);
return createNiftiBuffer(
volume,
createSegmentationData(project, volume, pose ?? defaultModelPose, segmentationScope),
'segmentation',
compressed,
);
}
function createPoseExport(project: ProjectRecord, activePose?: ModelPoseValue) {
@@ -909,6 +992,64 @@ function createPoseExport(project: ProjectRecord, activePose?: ModelPoseValue) {
}, null, 2), 'utf8');
}
function createProjectExportBundle({
project,
files,
targets,
compressed,
activePose,
segmentationScope,
}: {
project: ProjectRecord;
files: string[];
targets: ProjectExportTarget[];
compressed: boolean;
activePose?: ModelPoseValue;
segmentationScope: SegmentationExportScope;
}) {
const entries: Array<{ name: string; data: Buffer; mtime?: number }> = [];
const needsVolume = targets.includes('dicom') || targets.includes('segmentation');
const volume = needsVolume ? readDicomHuVolume(files) : null;
const format = compressed ? 'nii.gz' : 'nii';
const exportRoot = `${project.id}-nifti-export`;
if (targets.includes('dicom') && volume) {
entries.push({
name: `${exportRoot}/${project.id}-dicom-image.${format}`,
data: createNiftiBuffer(volume, volume.data, 'dicom', compressed),
});
}
if (targets.includes('segmentation') && volume) {
entries.push({
name: `${exportRoot}/${project.id}-segmentation-label.${format}`,
data: createNiftiBuffer(
volume,
createSegmentationData(project, volume, activePose ?? defaultModelPose, segmentationScope),
'segmentation',
compressed,
),
});
entries.push({
name: `${exportRoot}/${project.id}-segmentation-labels.json`,
data: createSegmentationLabelMetadata(project, segmentationScope, activePose),
});
}
if (targets.includes('pose')) {
entries.push({
name: `${exportRoot}/${project.id}-pose-data.json`,
data: createPoseExport(project, activePose),
});
}
if (!entries.length) {
throw new Error('未选择可导出的内容');
}
return createTarGz(entries);
}
function findProject(state: AppState, projectId: string) {
return state.projects.find((candidate) => candidate.id === projectId);
}
@@ -1443,14 +1584,12 @@ function createTarEntryHeader(name: string, size: number, mtime: number) {
return header;
}
function createDicomTarGz(files: string[]) {
function createTarGz(entries: Array<{ name: string; data: Buffer; mtime?: number }>) {
const chunks: Buffer[] = [];
files.forEach((fileName) => {
const filePath = path.join(dicomDir, fileName);
const stat = fs.statSync(filePath);
const data = fs.readFileSync(filePath);
chunks.push(createTarEntryHeader(`Head_CT_DICOM/${fileName}`, data.length, stat.mtimeMs / 1000));
entries.forEach((entry) => {
const data = entry.data;
chunks.push(createTarEntryHeader(entry.name, data.length, entry.mtime ?? Date.now() / 1000));
chunks.push(data);
const remainder = data.length % 512;
if (remainder > 0) {
@@ -1462,6 +1601,18 @@ function createDicomTarGz(files: string[]) {
return zlib.gzipSync(Buffer.concat(chunks));
}
function createDicomTarGz(files: string[]) {
return createTarGz(files.map((fileName) => {
const filePath = path.join(dicomDir, fileName);
const stat = fs.statSync(filePath);
return {
name: `Head_CT_DICOM/${fileName}`,
data: fs.readFileSync(filePath),
mtime: stat.mtimeMs / 1000,
};
}));
}
function estimateSliceSpacingFromAttributes(attributes: DicomAttributes[]) {
const diffs: number[] = [];
for (let index = 1; index < attributes.length; index += 1) {
@@ -1889,6 +2040,7 @@ async function startServer() {
const requestedTarget = targetOverride ?? String(req.query.target ?? 'segmentation');
const target = requestedTarget === 'dicom' || requestedTarget === 'pose' ? requestedTarget : 'segmentation';
const activePose = parseModelPoseQuery(req.query.pose);
const segmentationScope = parseSegmentationScope(req.query.segmentationScope);
try {
if (target === 'pose') {
@@ -1904,7 +2056,7 @@ async function startServer() {
const files = getProjectDicomFiles(project);
const format = req.query.format === 'nii' ? 'nii' : 'nii.gz';
const compressed = format === 'nii.gz';
const payload = createNiftiExport(project, files, target, compressed, activePose);
const payload = createNiftiExport(project, files, target, compressed, activePose, segmentationScope);
const suffix = target === 'dicom' ? 'dicom-image' : 'segmentation-label';
const filename = `${project.id}-${suffix}.${format}`;
fs.writeFileSync(path.join(exportDir, filename), payload);
@@ -1919,6 +2071,49 @@ async function startServer() {
}
};
app.get('/api/projects/:projectId/export-bundle', (req, res) => {
const state = readState();
const project = state.projects.find((candidate) => candidate.id === req.params.projectId);
if (!project) {
res.status(404).json({ message: '项目不存在' });
return;
}
const targets = parseExportTargets(req.query.targets);
if (!targets.length) {
res.status(400).json({ message: '请至少选择一个导出内容' });
return;
}
const activePose = parseModelPoseQuery(req.query.pose);
const segmentationScope = parseSegmentationScope(req.query.segmentationScope);
const format = req.query.format === 'nii' ? 'nii' : 'nii.gz';
const compressed = format === 'nii.gz';
try {
const files = getProjectDicomFiles(project);
const payload = createProjectExportBundle({
project,
files,
targets,
compressed,
activePose,
segmentationScope,
});
const filename = `${project.id}-nifti-export.tar.gz`;
fs.writeFileSync(path.join(exportDir, filename), payload);
project.exportedMaskCount += targets.includes('segmentation') ? 1 : 0;
writeState(state);
res.setHeader('Content-Type', 'application/gzip');
res.setHeader('Content-Disposition', `attachment; filename="${filename}"`);
res.send(payload);
} catch (error) {
res.status(422).json({ message: error instanceof Error ? error.message : '导出包生成失败' });
}
});
app.get('/api/projects/:projectId/export-nifti', (req, res) => handleProjectExport(req, res));
app.get('/api/projects/:projectId/export-mask', (req, res) => handleProjectExport(req, res, 'segmentation'));
app.post('/api/projects/:projectId/export-mask', (req, res) => handleProjectExport(req, res, 'segmentation'));

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@@ -13,7 +13,7 @@ import {
} from 'lucide-react';
import * as THREE from 'three';
import { DicomFusionVolume, DicomPreview, ModelPose, ModuleStyle, Project, SavedModelPose } from '../types';
import { api, downloadMask, downloadSelectedProjectExports, ProjectExportTarget } from '../lib/api';
import { api, downloadMask, downloadProjectExportBundle, ProjectExportTarget, SegmentationExportScope } from '../lib/api';
interface ModelPreviewPayload {
fileName: string;
@@ -83,6 +83,10 @@ const exportOptions: Array<{ id: ProjectExportTarget; label: string; description
{ id: 'segmentation', label: '分割影像', description: '同维度 Label Map' },
{ id: 'pose', label: '位姿数据', description: 'JSON 侧车' },
];
const segmentationScopeOptions: Array<{ id: SegmentationExportScope; label: string; description: string }> = [
{ id: 'visible', label: '可见类别', description: '仅导出当前显示构件' },
{ id: 'all', label: '所有类别', description: '包含隐藏构件' },
];
const moduleColors = ['#3b82f6', '#22c55e', '#f59e0b', '#ef4444', '#8b5cf6', '#14b8a6', '#f97316', '#64748b', '#ec4899'];
const fusionBaseExtent = 4.6;
const axisInsetLength = 17;
@@ -1925,6 +1929,7 @@ export default function ReverseWorkspace({ projectId }: { projectId: string }) {
segmentation: true,
pose: true,
});
const [segmentationExportScope, setSegmentationExportScope] = useState<SegmentationExportScope>('visible');
const [project, setProject] = useState<Project | null>(null);
const [fusionVolume, setFusionVolume] = useState<DicomFusionVolume | null>(null);
const [fusionError, setFusionError] = useState('');
@@ -1936,7 +1941,7 @@ export default function ReverseWorkspace({ projectId }: { projectId: string }) {
const handleExport = async (format: 'nii' | 'nii.gz') => {
setExporting(true);
try {
await downloadMask(projectId, format, modelPose);
await downloadMask(projectId, format, modelPose, segmentationExportScope);
} catch (error) {
setFusionError(error instanceof Error ? error.message : '导出失败');
} finally {
@@ -1956,8 +1961,11 @@ export default function ReverseWorkspace({ projectId }: { projectId: string }) {
setExporting(true);
setFusionError('');
try {
await downloadSelectedProjectExports(projectId, selectedItems, 'nii.gz', { pose: modelPose });
window.setTimeout(() => setExporting(false), selectedItems.length * 220 + 200);
await downloadProjectExportBundle(projectId, selectedItems, 'nii.gz', {
pose: modelPose,
segmentationScope: segmentationExportScope,
});
window.setTimeout(() => setExporting(false), 900);
setShowExportMenu(false);
} catch (error) {
setFusionError(error instanceof Error ? error.message : '导出失败');
@@ -2329,12 +2337,38 @@ export default function ReverseWorkspace({ projectId }: { projectId: string }) {
</label>
))}
</div>
{exportSelection.segmentation && (
<div className="mt-3 rounded-xl border border-emerald-100 bg-emerald-50/70 p-2">
<div className="mb-2 flex items-center justify-between gap-2">
<p className="text-[10px] font-bold text-emerald-800"></p>
<span className="text-[9px] font-bold text-emerald-600"> labels.json</span>
</div>
<div className="grid grid-cols-2 gap-1.5">
{segmentationScopeOptions.map((option) => (
<button
key={option.id}
onClick={() => setSegmentationExportScope(option.id)}
className={`rounded-lg px-2 py-1.5 text-left transition ${
segmentationExportScope === option.id
? 'bg-emerald-600 text-white shadow-sm'
: 'bg-white text-emerald-700 hover:bg-emerald-100'
}`}
>
<span className="block text-[10px] font-bold">{option.label}</span>
<span className={`block text-[9px] ${segmentationExportScope === option.id ? 'text-emerald-50' : 'text-emerald-500'}`}>
{option.description}
</span>
</button>
))}
</div>
</div>
)}
<button
onClick={handleExportSelected}
disabled={exporting}
className="mt-3 flex h-9 w-full items-center justify-center rounded-xl bg-slate-900 text-[11px] font-bold text-white hover:bg-black disabled:opacity-50"
>
</button>
</div>
)}

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@@ -1,6 +1,7 @@
import { DicomFusionVolume, DicomInfo, DicomPreview, ModelPose, ModuleStyle, OverviewSummary, Project, SavedModelPose, SessionState, UserRecord } from '../types';
export type ProjectExportTarget = 'dicom' | 'segmentation' | 'pose';
export type SegmentationExportScope = 'all' | 'visible';
async function request<T>(path: string, options: RequestInit = {}): Promise<T> {
const response = await fetch(path, {
@@ -89,26 +90,32 @@ function appendPose(params: URLSearchParams, pose?: ModelPose) {
}
}
export async function downloadMask(projectId: string, format: 'nii' | 'nii.gz' = 'nii.gz', pose?: ModelPose) {
export async function downloadMask(projectId: string, format: 'nii' | 'nii.gz' = 'nii.gz', pose?: ModelPose, segmentationScope: SegmentationExportScope = 'visible') {
const params = new URLSearchParams({ format });
appendPose(params, pose);
params.set('segmentationScope', segmentationScope);
triggerFileDownload(`/api/projects/${projectId}/export-mask?${params.toString()}`);
}
export async function downloadProjectExport(projectId: string, target: ProjectExportTarget, format: 'nii' | 'nii.gz' = 'nii.gz', options: { pose?: ModelPose } = {}) {
export async function downloadProjectExport(projectId: string, target: ProjectExportTarget, format: 'nii' | 'nii.gz' = 'nii.gz', options: { pose?: ModelPose; segmentationScope?: SegmentationExportScope } = {}) {
const params = new URLSearchParams({ target, format });
if (target !== 'dicom') {
appendPose(params, options.pose);
}
if (target === 'segmentation') {
params.set('segmentationScope', options.segmentationScope ?? 'visible');
}
triggerFileDownload(`/api/projects/${projectId}/export-nifti?${params.toString()}`);
}
export async function downloadSelectedProjectExports(projectId: string, targets: ProjectExportTarget[], format: 'nii' | 'nii.gz' = 'nii.gz', options: { pose?: ModelPose } = {}) {
targets.forEach((target, index) => {
window.setTimeout(() => {
void downloadProjectExport(projectId, target, format, options);
}, index * 180);
export async function downloadProjectExportBundle(projectId: string, targets: ProjectExportTarget[], format: 'nii' | 'nii.gz' = 'nii.gz', options: { pose?: ModelPose; segmentationScope?: SegmentationExportScope } = {}) {
const params = new URLSearchParams({
targets: targets.join(','),
format,
segmentationScope: options.segmentationScope ?? 'visible',
});
appendPose(params, options.pose);
triggerFileDownload(`/api/projects/${projectId}/export-bundle?${params.toString()}`);
}
export async function downloadDicomArchive(projectId: string) {

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@@ -0,0 +1,68 @@
# 实现方案-2026-05-20-02-32-47
## 实现方案文档路径
`工程分析/实现方案-2026-05-20-02-32-47.md`
## 修改目标
将顶部“导出全部 NII.GZ”改为一次性下载 `.tar.gz` 导出包;分割影像导出时自动附带 label/category 映射 JSON并支持“所有类别/可见类别”范围选择。
## 涉及路径
- `WebSite/server.ts`
- `WebSite/src/lib/api.ts`
- `WebSite/src/components/ReverseWorkspace.tsx`
- `工程分析/需求分析-2026-05-20-02-32-47.md`
- `工程分析/实现方案-2026-05-20-02-32-47.md`
- `工程分析/测试方案-2026-05-20-02-32-47.md`
- `工程分析/经验记录.md`
## 技术路线
1. 后端扩展分割生成参数:
- 增加 `SegmentationExportScope = all | visible`
- `createSegmentationData` 按 scope 决定是否跳过隐藏构件。
2. 后端新增类别映射 JSON
- 根据 `project.stlFiles``project.moduleStyles` 生成 label/name/fileName/color/opacity/visible。
- scope 为 visible 时只包含可见构件。
3. 后端新增导出包接口:
- `GET /api/projects/:projectId/export-bundle`
- 参数:`targets=dicom,segmentation,pose``format=nii.gz``pose=...``segmentationScope=visible|all`
- 使用现有 tar header 工具封装为 `.tar.gz`
4. 前端 API
- 新增 `downloadProjectExportBundle`
- 保留单个分割 NII/NII.GZ 下载兼容。
5. 前端菜单:
- “导出所选”改为下载单个压缩包。
- 增加分割类别范围的 segmented control。
- 仅选中分割影像时显示类别范围选项。
## 执行步骤
- 新增后端 tar entry 通用函数和 bundle 生成函数。
- 修改 NIfTI 分割生成函数支持 scope。
- 新增 label map JSON 生成逻辑。
- 调整前端 API 和导出菜单。
- 执行 `npm run lint``npm run build`
- 用临时/正式服务验证 bundle 接口返回 `.tar.gz`,并检查包内文件名。
- 追加经验记录、commit、push、部署。
## 兼容性与回滚方案
- `/export-nifti``/export-mask` 保持可用。
- 单独分割导出默认沿用 visible scope。
- 若 bundle 导出异常,可回滚到多文件直链下载。
## 预计文件变更
- `server.ts`:新增 bundle、分割 scope、类别映射 JSON。
- `api.ts`:新增 bundle 下载 API。
- `ReverseWorkspace.tsx`:导出菜单增加 scope 选择并调用 bundle。
- 工程分析文档:新增本次文档,更新经验记录。
## 提交与部署策略
- Commit message`2026-05-20-02-32-47 支持NII导出包与分割类别范围`
- 显式暂存本次相关文件,避免提交历史删除状态。
- 推送到 Gitea `origin/main`,并使用 `tmux` 会话 `revoxelseg-dicom` 重新部署。

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@@ -0,0 +1,62 @@
# 测试方案-2026-05-20-02-32-47
## 测试方案文档路径
`工程分析/测试方案-2026-05-20-02-32-47.md`
## 静态检查
-`WebSite/` 下执行 `npm run lint`
## 构建检查
-`WebSite/` 下执行 `npm run build`
## 关键业务场景验证
- 顶部“导出全部 NII.GZ”选择多个内容后只触发一个压缩包下载。
- 选中分割影像时,菜单显示“导出可见类别/导出所有类别”选项。
- bundle 中包含所选 DICOM NIfTI、分割 NIfTI、位姿 JSON。
- 若包含分割影像bundle 中同时包含 `segmentation-labels.json`
- 类别 JSON 中 label/partId/name/fileName/color/opacity/visible 与项目构件层级一致。
## 医学影像数据相关边界验证
- DICOM NIfTI 仍为真实 DICOM 体数据同维同距。
- 分割 NIfTI 仍使用当前模型位姿。
- visible scope 下隐藏构件不进入分割图和类别 JSON。
- all scope 下隐藏构件仍进入分割图和类别 JSON。
## 部署验证
- 重启 `tmux` 会话 `revoxelseg-dicom`
- 验证:
- `curl http://127.0.0.1:4000/api/health`
- `curl -I http://127.0.0.1:4000/`
## Git/Gitea 备份验证
- 显式暂存本次相关代码和文档。
- 创建包含时间戳和描述的 commit。
- 推送到 Gitea `origin/main`
## 实测结果
- `npm run lint`:通过。
- `npm run build`:通过;仅保留 Vite chunk size 提醒。
- 临时服务 `127.0.0.1:4100` 验证 `targets=segmentation,pose&segmentationScope=visible`HTTP 200返回 `.tar.gz`
- visible bundle 包内包含:
- `head-ct-demo-segmentation-label.nii.gz`
- `head-ct-demo-segmentation-labels.json`
- `head-ct-demo-pose-data.json`
- `segmentation-labels.json` 验证包含 `segmentationScope=visible``label/partId/name/categoryName/className/fileName/color/opacity/visible` 字段。
- 临时服务验证 `targets=dicom,segmentation,pose&segmentationScope=all`HTTP 200返回约 75.90 MB `.tar.gz`
- all bundle 包内包含 DICOM NIfTI、分割 NIfTI、分割 labels JSON、位姿 JSON。
- all labels JSON 验证包含隐藏构件,隐藏项 `visible=false` 仍保留。
- bundle 内分割 NIfTI 头验证:`512x512x300`datatype `2`bitpix `8`,最大标签 `9`
## 风险与回归关注点
- 避免重新引入 `URL.createObjectURL(blob)` 下载。
- 避免提交历史工程文档删除状态。
- 大体数据打包接口要捕获异常并返回明确错误。

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@@ -1099,3 +1099,21 @@ C. 解决问题方案
D. 后续如何避免问题
凡是三维视图中的方向、法向、切面或平移提示,都应从 Three.js 真实对象矩阵或统一坐标变换链路推导,不能手写静态示意。若该提示会随拖拽视角变化,还必须包含场景根节点和相机投影。
## 2026-05-20-02-32-47 分割影像与类别元数据必须同包同源
A. 具体问题
用户要求“导出全部 NII.GZ”改成压缩包形式同时分割影像必须附带不同类别 ID 与名称的对应 JSON并且分割范围可选所有类别或可见类别。如果 NIfTI 和 JSON 分开下载,或二者使用不同筛选条件,后续在 ITK-SNAP 查看时容易无法追溯标签语义。
B. 产生问题原因
旧前端对多个导出目标采用连续触发多个直链下载,缺少一个原子化导出包;旧分割生成逻辑默认跳过隐藏构件,也没有把实际参与导出的 label/partId/name/fileName/color 等元数据写入侧车文件。
C. 解决问题方案
新增 `/api/projects/:projectId/export-bundle`,将 DICOM NIfTI、分割 NIfTI、位姿 JSON 和分割 labels JSON 放入同一个 `.tar.gz`。分割生成函数和 labels JSON 生成函数共用 `segmentationScope=visible|all`,确保可见/全量筛选逻辑一致labels JSON 中记录 label、partId、name、categoryName、className、fileName、color、opacity、visible 和 activePose。
D. 后续如何避免问题
任何分割影像导出都应同时考虑语义侧车文件,并保证侧车元数据与实际 mask 标签来自同一批样式和筛选条件。多文件导出优先做成一个后端归档包,避免浏览器多下载顺序、丢文件或元数据错配。

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# 需求分析-2026-05-20-02-32-47
## 开始时间
2026-05-20-02-32-47
## 原始需求摘要
用户要求优化“导出全部 NII.GZ”
- 选择导出全部时,改为压缩包形式一次导出。
- 如果选择分割影像,需要同时导出不同类别 ID 与名称/类别名对应的 JSON 文件。
- 分割影像导出范围可选择“所有类别”或“可见类别”。
## 业务目标
- 避免多文件连续触发下载,形成一个可归档、可转移的导出包。
- 让分割影像与类别语义元数据成对导出,便于 ITK-SNAP 查看后再对照系统内 STL 构件层级。
- 保留“只导出当前可见构件”的轻量检查场景,同时支持“导出全部构件”的完整交付场景。
## 输入与输出
- 输入:
- 导出内容选择DICOM 原始影像、分割影像、位姿数据。
- 分割类别范围:所有类别或可见类别。
- 当前模型位姿。
- 输出:
- 一个 `.tar.gz` 导出包。
- 包内按选择包含 DICOM NIfTI、分割 NIfTI、位姿 JSON。
- 若包含分割影像,同时包含类别映射 JSON。
## 影响范围
- `WebSite/server.ts`
- `WebSite/src/lib/api.ts`
- `WebSite/src/components/ReverseWorkspace.tsx`
- 本次工程分析文档和经验记录。
## 关键约束
- NIfTI 导出仍必须使用真实 DICOM 维度、spacing 和当前模型位姿。
- 分割类别范围不能影响 DICOM 原始影像和位姿数据导出。
- 类别 JSON 必须与实际导出的分割标签值一致。
- 前端仍使用后端直链下载,避免重新引入 blob URL。
## 风险点
- DICOM NIfTI 和分割 NIfTI 都可能较大,包生成会有一定耗时。
- 当前项目已有 tar.gz 归档工具,若强行实现 zip 可能引入额外复杂度;本轮默认使用 `.tar.gz` 压缩包。
- “可见类别”需要读取项目持久化的 `moduleStyles.visible`,不能只看前端临时状态。
## 默认假设
- “压缩包形式”按项目现有归档方式实现为 `.tar.gz`
- 顶部“导出全部 NII.GZ”使用压缩包右侧单独 NII/NII.GZ 导出按钮继续导出单个分割 NIfTI。
- 分割类别范围默认为“可见类别”,符合当前右侧映射视图的显示语义。