extracting txt information

[VanGog]

I want to ask you if could you develop some function to get some kind of information similar to txt:- but with regard to performance. To make some function that can extract some kind of information like coordinates of white pixels or coordinates of first white pixel in image. I mean to do a function that would exclude passing all the pixels to output but would print
A) all specific pixels information
B) only one pixel information
C) maybe man could get whole raw or whole column of pixels

Although I am not expert on images, I think there would be possibility to read the image in specified way (from begin or from end or by rows or by columns). For example if I would like to find first line of white pixels where it is expected to be on end of image.

[fmw42]

I believe that this would be very low priority as all the IM developers are busy with the IM 7 alpha development.

But see my post about using compare at viewtopic.php?f=1&t=21061&start=15#p85459