Comparing Images
4761
How to compare two images?
28208
Photoshop color difference
96734
Merging two pictures
108528
How to compare functions?
57529
What is the easiest way to have a better quality image from a given image
53981
how to detect shapes in an image?
36253
Label or index images
10195
Automatically Locate Included Images
53228
Lower-cost alternative to Photoshop
146958
Detecting colors for an Image using PHP
52771
How can I tell if two pictures were taken with the same camera without metadata?
144136
jQuery: Check if image exists
145121
How to pick a color from an image
158855
How can I see the photo settings like f-stop, ISO etc. of a image?
7127
Overview of basic results about images and preimages
128514
What is the fastest way to locate an image inside a larger image?
88220
Labelling objects in a picture with numbers