RGB图像中三个通道的每个灰度值的像素个数

群上有位朋友说需要列举RGB图像中三个通道的每个灰度值的像素个数，在这里贴一下代码。 

图片：pc01.bmp

dev_clear_window() 
read_image (Image021,"L:/Halcon test/fruit/pc01.bmp") 
get_image_size (Image021, Width, Height) 
dev_open_window_fit_image (Image021, 0, 0, Width, Height, WindowHandle) 
gen_rectangle2 (ROI_0, 515.6, 935.599, rad(-90), 15.6, 4.8) 
decompose3(Image021, Image021R, Image021G, Image021B) 
rgb1_to_gray(Image021,Image021gray) 
dev_display(Image021R) 
stop() 
gen_rectangle1 (ROI_0, 170.5, 51.5, 426.5, 661.5) 
reduce_domain(Image021R,ROI_0,ImageReduced) 
threshold (ImageReduced, Regions, 11, 152) 
gray_histo(Regions, Image021R, AbsoluteHisto, RelativeHisto) 
intensity(Regions, Image021R, Mean1C021R, Deviation1C021R) 
disp_message (WindowHandle, "平均R通道值为" + Mean1C021R + "，偏差" + Deviation1C021R, "windows", 70, 70, "red", "true") 
disp_continue_message (WindowHandle, "black", "true") 
stop() 

 
区域的像素灰度值平均值 

图片：1.jpg

 

AbsoluteHisto变量的部分像素数量。