一個halcon的圖片轉(zhuǎn)換成透明圖片功能

 1 read_image (VoiceOcr, 'D:/Qtprogram/Videographicsitem/iconsA/halconProcess/voice_ocr -2.jpg')
 2 
 3 count_channels (VoiceOcr, Channels)
 4 if(Channels==3)
 5     decompose3 (VoiceOcr, Image1, Image2, Image3)
 6     
 7     threshold(Image3, Region2, 200, 255)
 8     connection(Region2,ConnectedRegion2)
 9     select_shape (ConnectedRegion2, SelectedRegions2, 'area', 'and', 500, 9999999999)
10     
11     compose3 (Image3, Image3, Image3, MultiChannelImage)
12     reduce_domain(MultiChannelImage,SelectedRegions2, ImageReduced2)
13     
14     Image3 := ImageReduced2
15     
16     compose4 (Image3, Image3, Image3, Image3, MultiChannelImage)
17     write_image (MultiChannelImage, 'tiff', 0, 'D:/Qtprogram/Videographicsitem/iconsA/halconProcess/voice_3')
18     
19     *compose3 (Image3, Image3, Image3,  MultiChannelImage)
20     *write_image (MultiChannelImage, 'png', 0, 'D:/Qtprogram/Videographicsitem/iconsA/halconProcess/voice_1K')
21     stop()
22 elseif(Channels==4)
23     decompose4 (VoiceOcr, Image1, Image2, Image3,Image4)
24     compose4 (Image3, Image3, Image3, Image3, MultiChannelImage)
25     write_image (MultiChannelImage, 'tiff', 0, 'D:/Qtprogram/Videographicsitem/iconsA/halconProcess/voice_1')
26 endif