Why Not Use Alternative Techniques?
April 10, 2009
Alternative techniques achieve their results as follows:
(1) Focus on a specific class of images, say printed text or faces, for example;
(2) Identify a structure for this class;
(3) Implement a technique for measuring the structure;
(4) Determine the similarity of images by comparing structural measurements.
If an image is too small, too out-of-focus, too blurred, or too obscured, then image quality is too poor to measure an image structure with sufficient accuracy.
At this point, a constrained approach will surely fail.
These techinques are termed CONSTRAINED, as mentioned in FAQ 2.
So, such alternative techniques can’t be effectively used with poor quality imagery.
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