Use opencv to traverse the image. The returned value is the coordinates of the pixels of.

SmallProgram, Record it as needed ~~

Traverse an image and return the coordinates of the point with a pixel value of 0:

# Include "stdafx. H "# include <stdio. h> # include <cv. h> # include 
Result:
 

 
 

 
 

 
 

 
========================================================== ========================================================== ===
 

 
PS:
 

 
Create an image and set it to 255 using memset:
 

 
Iplimage * test = cvcreateimage (cvgetsize (IMG), 8, 1 );
Apsaradb for memset (test-> imagedata, 255, test-> widthstep * test-> height );
 

 
 

 
Note that the Data Part Of The iplimage image is set to 255, and the data starting address is
Test-> imagedata
 

 

 

 
In other words, how can I calculate the length of the iplimage header?