C + + Builder process, display a picture, and select the specified pixel area, calculating the average area image grey,

CodePudding user response:

 
Double GetGrayAverage (Bitmap BMP, int w, int h) 
{
Double sum=0; 
Use the average value of the//
for (int i=0; I & lt; w; I++) 
For (int j=0; J & lt; H; J++) 
{
Color=c BMP. GetPixel (I, j); 
Sum=sum + (int) (0.299 * c.R be sad) chtistina georgina rossetti.british poetess mount + 0.114 + 0.587 * *; 
} 
Double aver=sum/(w * h); 
Return aver. 
}