在51halcon上看到一个需求,需要将一张小图去背景后贴在大图的指定位置,通过博客https://www.cnblogs.com/lgyup/p/8472840.html启发,
PS:自己试验使用每个像素循环绘制方式发现效率太差改用博客使用的数组连续绘制的方式.
*读图 read_image (Image, 'C:/Users/yoga/Desktop/测试图像/月亮.png') read_image (ImagePart, 'C:/Users/yoga/Desktop/测试图像/飞机.png') dev_update_off () count_seconds (Seconds) *rgb分离 decompose3 (Image, ImageR, ImageG, ImageB) decompose3 (ImagePart, ImagePartR, ImagePartG, ImagePartB) *获取目标点 threshold (ImageR, Region, 128, 255) connection (Region, ConnectedRegions) select_shape_std (ConnectedRegions, SelectedRegions, 'max_area', 70) area_center (SelectedRegions, Area, Row, Column) *飞机去背景 auto_threshold (ImagePartR, Regions1, 2) select_shape_std (Regions1, SelectedRegions1, 'max_area', 70) connection (SelectedRegions1, ConnectedRegions1) select_shape_std (ConnectedRegions1, SelectedRegions2, 'max_area', 70) difference (ImagePartR, SelectedRegions2, RegionDifference) connection (RegionDifference, ConnectedRegions2) select_shape_std (ConnectedRegions2, SelectedRegions3, 'max_area', 70) get_region_points (SelectedRegions3, PartRows, PartColumns) count:=|PartRows| startRs:=gen_tuple_const(count, Row) startCs:=gen_tuple_const(count, Column) *将所有像素坐标加上偏移量 Rows:=startRs+PartRows Cols:=startCs+PartColumns *r绘制 get_grayval (ImagePartR, PartRows, PartColumns, Grayval) copy_image (ImageR, DupImageR) set_grayval (DupImageR, Rows, Cols, Grayval) *g绘制 get_grayval (ImagePartG, PartRows, PartColumns, Grayval1) copy_image (ImageG, DupImageG) set_grayval (DupImageG, Rows, Cols, Grayval1) *b绘制 get_grayval (ImagePartB, PartRows, PartColumns, Grayval2) copy_image (ImageB, DupImageB) set_grayval (DupImageB, Rows, Cols, Grayval2) compose3 (DupImageR, DupImageG, DupImageB, MultiChannelImage) count_seconds (Seconds1) tt:=(Seconds1-Seconds)*1000
最后效果如下
下面是原图
