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9-3.hdev
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<?xml version="1.0" encoding="UTF-8"?>
<hdevelop file_version="1.1" halcon_version="12.0">
<procedure name="main">
<interface/>
<body>
<c>*清空显示窗口</c>
<l>dev_close_window ()</l>
<c>*读取待检测的图像 </c>
<l>read_image (Image, 'data/crossShape')</l>
<l>dev_open_window_fit_image (Image, 0, 0, -1, -1, WindowHandle)</l>
<c>*设置系统绘制的颜色</c>
<l>dev_set_color ('white')</l>
<c>*将彩色图像转化为灰度图像，这是为了后面的图像二值化</c>
<l>rgb1_to_gray (Image, GrayImage)</l>
<c>*创建矩形选区，选择感兴趣部分</c>
<l>gen_rectangle1 (Rectangle, 100, 127, 325, 490)</l>
<l>reduce_domain (GrayImage, Rectangle, ROI)</l>
<l>gen_image_proto (ROI, ImageCleared, 0)</l>
<c>*进行阈值处理，提取出图中较暗的包含了孔洞的区域</c>
<l>threshold (ROI, Regions, 50, 255)</l>
<c>*将其不连通的部分独立分割出来，成为一组区域</c>
<l>connection (Regions, ConnectedRegions)</l>
<c>*设置系统绘制的颜色。为了标记选择的区域</c>
<l>dev_set_color ('yellow')</l>
<c>*方法一</c>
<c>*将阈值处理的结果区域作为select_shape算子的输入，根据区域的宽度，选择出目标</c>
<l>select_shape (ConnectedRegions, SelectedRegions1, 'area', 'and', 1000, 99999)</l>
<c>*方法二</c>
<c>*先计算面积，再选择出面积最大的目标</c>
<l>area_center(ConnectedRegions, Area, Row, Column)</l>
<l>select_shape (ConnectedRegions, SelectedRegions2, 'area', 'and', max(Area), 99999)</l>
<c>*方法三</c>
<l>select_shape_std (SelectedRegions1, SelectedRegion3, 'max_area', 70) </l>
<l>dev_clear_window ()</l>
<l>dev_display (SelectedRegion3)</l>
</body>
<docu id="main">
<parameters/>
</docu>
</procedure>
</hdevelop>