Methods, algorithms and techniques for the programmatic comparison of image data.
Methods, algorithms and techniques by which images can be programmatically compared, either to one another or to a database of extracted image features.
Meaningful image comparison will typically involve the extraction of some of features from the images in question, as metadata. Many techniques for feature extraction (and subsequent feature selection) come from the content-based image retrieval field.
Typical image-comparison schemes necessitate some manner of image processing as well.
