node-red-contrib-smartnode/imageProcessing/geometry/locales/en-US/geometry.html

this project is a nodejs package for making the nodered support the Smart Device development. the pacakge require node-red enviroment.

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<script type="text/xred" data-help-name="Geometry">
	<h3 id="几何图形识别"><a name="几何图形识别" href="#几何图形识别"></a>几何图形识别</h3>
	<p>本节点使用摄像头和OpenCV进行图形识别，在光照充足的情况下，可以识别正方形和圆形。</p>
	<h4 id="配置参数"><a name="配置参数" href="#配置参数"></a>配置参数</h4>
	<ol>
	<li>Name：节点名字</li></ol>
	<h4 id="输入"><a name="输入" href="#输入"></a>输入</h4>
	<ol>
	<li>msg.payload：开始检测</li></ol>
	<h4 id="输出"><a name="输出" href="#输出"></a>输出</h4>
	<ol>
	<li>msg.geometry：检测到的图形</li></ol>
	<h4 id="使用方法"><a name="使用方法" href="#使用方法"></a>使用方法</h4>
	<ol>
	<li>将摄像头插入Edison的USB口。</li><li>使用时，向节点传入<code>msg.geometry</code>消息，控制检测的开始与关闭。</li><li><code>msg.geometry</code>的值为0-1的整数，0为关闭检测，1为开始检测。</li><li>输出<code>msg.geometry</code>的值为0-2的整数，1为矩形，2为圆形，0为未知图形（通常不会出现）。</li></ol>
</script>