[Gambas-user] Comparing 2 pictures

[Werner]

richard terry wrote:
> On Mon, 10 Aug 2009 10:15:20 pm Werner wrote:
>   
>> richard terry wrote:
>>     
>>> Hi all,
>>>
>>> i wondered if anyone could tell me how to comparea picture1 to picture 2
>>> and tell if they were different (ie one had been changed in some way?
>>>
>>> thanks in anticipation.
>>>
>>> Richard
>>>
>>>       
>> If they are supposed to be identical and the size matches maybe md5sum?
>>
>>     
> good idea, I'll try that.
>
> I'm just writing my skin excision module and I've set it up so that I can load 
> a photo-graph into the drawing editor and add lines etc, or shapes to outline 
> the exicision, but want to be able to know if there were actually any 
> changes.
>
> Will post how I got on.
>
> Regards
>
> richard
>
>   
There was a discussion covering picture similarity on slashdot recently.
http://ask.slashdot.org/story/09/07/16/2154238/Choosing-Better-Quality-JPEG-Images-With-Software?art_pos=26

Regards
Werner