Image hashing implantation?
I know it is loaded question but what is the best way to hash a image so that similar images can be identified. Is there any implantation? I am looking for something that can detect minor modification to an image
One of the paper I found is:
http://research.microsoft.com/pubs/77279/venkie00robust.pdf
[edit]
Maybe hashing is not a good word to use when trying to identify similar images. I want to be able to match two images with minor changes such as: resize, crop, texted added on image etc.
I want to generate string or number based of an image. Using the generated string or number, I want to compare how similar the images are.
Example:
temp.jpg generates "abcdef123456789"
temp-crop.jpg generates "abcdef12345678a"
Based on the generated strings, I can calculate how similar the images are. Maybe using Hamming Distance. Few differences in the string, it indicates minor changes in the images