Hi, i am woundering if anyone knows how t compare to simular images and return a value or figure, the only way i am doing it so far is by pixels, but i cant figure away to check every pixel, and i "presume" that will be slow, so the only wayi am doing it so far is by have the X,Y Coordinates of areas i want to check are differnt then it simply checks the pixels, but i would really love to be able to do this better and even "pattern match" in images.
Anyone know have any ideas?
Thanks
Andy
If you aren't comparing often, using loops to go through the X and Y positions and check them shouldn't be too slow (unless the image is huge).
.:::.Joshtek.:::.
compareing 2 images should be straight foward. You could open both images at the same time and compare the differences on the fly; that way you won't have to create unessasary data.
Say you do a fast loop function and get to row X column Y and the colour is different then mark this as a change and or mark he difference in values. I would add an image overlay to mark where the changes are as well for a visual representation.
Are you making some sort of authenticating system or a new picture format?
Hi, well im just playing with an idea for the company i work for, and at the moment yea, there are two images, and the current way they compare is by flashing two images together and "looking" for differences, so i thought there must be a nice way automating that to illinate a user staring at two flashing images. Ive never used the fastloop, are you saying, like checking every pixel in a row of that image?
Images are very small... some only maybe 20px x 40px.
How would i go about getting it to check a line then goto the next? Oh, im useing MMF 1.5. If i have success i do intend to buy 2.
Thanks
Andy
You could make active picture objects load both images, have one overlapping the other and set an XOR draw mode to the top one. Then any changes will show up in colours, whereas bits that are the same will be black. This wouldn't be a completly automatic check, but it would probably help.
To make it completly automatic, you would need to use the overlay object - using 2 overlays, load the images then in the code add an X loop which runs a Y loop which checks each pixel of both overlays to see if they are the same. If it ever finds any that are different, break the loop and make a string object visible or something similar.
I could possibly make an example of this if you want (and if I have enough time)
That would be really helpful if you could make a quick example, only if u find some time. But that would be great. Ill give a shot at what yu sead first to.
Thanks, either post it up here or send it to my email, []andygilbertuk@tiscali.co.uk[/]
Cheers
Andy
Ok, I've posted an example here:
http://clickteam.com/center/showflat.php/Cat/0/Number/15449/an/0/page/0
ohhh sorry dude, i only have 1.5 (sorry i mentioned it in my 2nd post shud of put it in my first), any chance of getting it into 1.5 version?
Thanks
Andy
Sorry, I don't have MMF 1.5 installed any more. Maybe someone else can convert it for you.
btw, when asking questions about MMF 1.5, you should post in the Older products forums.
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