义乌市弘达服装厂
Yiwu Hongda Garment Factory

使用方法 / How to Use

Step-by-step guide — bilingual

分步流程 / Workflow

1. 上传图片：选择本地图片，渲染到画布（仅读取，不处理）。
   Upload your image — it is only read into the canvas.
2. 执行抠图：点击【开始抠图】，本地 SAM 自动识别主体；可左键点击物体补充前景提示点（绿色＋）、Alt/右键点击为背景点（红色－）微调，也可手动涂抹蒙版（笔刷补前景、橡皮擦除）。
   Click “Start Cutout” — SAM detects the subject locally. Left-click on the object adds a foreground point (green +), Alt/right-click adds a background point (red −). You can also paint the mask by hand.
3. 绘制分割线：用曲线 / 直线工具在画布上画分割线，支持撤销（Ctrl+Z）与清空。
   Draw split lines with the curve or line tool; Ctrl+Z to undo, one click to clear.
4. 生成分区：点击【生成分区】，自动计算闭合区域并编号。竖向分割线从左往右编号，横向分割线从上往下编号。
   Click “Generate Regions” — closed areas are computed and numbered (vertical lines left→right, horizontal lines top→bottom).
5. 上色：点击分区（画布或列表），选择纯色 / 线性渐变，羽化滑块 0–30px 只作用于交界处，颜色不会溢出物体轮廓，原图纹理光影完整保留。
   Click a region, pick a solid color or linear gradient. Feathering (0–30px) applies only at borders; colors never spill outside the cutout and the original texture stays intact.
6. 导出：选择贴回原始背景 PNG 或透明背景 PNG，直接下载到本地。
   Export as PNG with the original background or a transparent background — downloaded straight to your device.

常用操作与快捷键 / Shortcuts & Tips

• 滚轮：缩放画布；Alt / 右键拖拽：平移。
  Mouse wheel zooms; Alt / right-drag pans.
• Ctrl+Z：撤销分割线；Esc：退出微调 / 涂抹模式。
  Ctrl+Z undoes a line; Esc exits refine/brush mode.
• 画布左上角可开关：蒙版、轮廓、编号、交界线显示。
  Toggle mask, outline, numbering and border-line display from the top-left corner.
• 超大图（长边 > 3000px）会自动等比缩小以保证性能。
  Very large images (long side > 3000px) are auto-scaled down for performance.
• 抠图后不满意？可返回上一步重新微调蒙版，修改会保留。
  Not happy with the cutout? Go back and refine the mask — your changes are kept.