NaturalIntelligence/imglab

Magic/Smart selection on mouse click on HTML canvas

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#64 创建于 2018年7月4日

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 (1 评论) (0 反应) (0 负责人)HTML (930 star) (560 fork)batch import
enhancementfirst-timers-onlygood first issuehelp wanted

描述

For the sake of laziness, we were wondering to introduce a smart selection tool which can automatically create a polygon and select particular part of an object.

How to

  1. workarea.tag.html load the image on hidden canvas.
  2. When smart selection tool is selected then select the area and convert it into either SVG path or SVG polygon.

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贡献者指南

技术栈
javascripthtml
领域
frontend
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
4
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-2 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
needs investigation
前置要求
HTML CanvasJavaScriptSVG basics
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
25
研究方向
First, examine the existing codebase, particularly `workarea.tag.html` and related JavaScript files to understand how images are loaded on a hidden canvas and how other selection tools (e.g., polygon, rectangle) are implemented. Then, research smart selection algorithms like edge detection or flood fill commonly used in image editing software. Finally, consider implementing a simple polygon drawing tool initially, then layer on 'smart' snapping to object edges using canvas pixel analysis.
Magic/Smart selection on mouse click on HTML canvas · NaturalIntelligence/imglab#64 | Good First Issue