comparing image

hihi..

firstly, i no knowledge about this ActiveX stuff..but i heard about its great use of it. thus i am wondering is there any ActiveX or Com which i can use it to compare image's pixel? or anything ActiveX could help me to sloved the comparing of images.

problem:
i need to compare between two images, if there is a different(like a black dot or an extra line on other image), it will be able to detect an different between the iamge.

Is there any ActiveX or COm which allow me to do so?

???
ocw