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April 20, 2007

Filed under: releases — Peter @ 3:07 am

Pixcavator Watercolor is now available as an online application

Lincoln from MS Research

Filed under: Image search, reviews — Peter @ 2:55 am

This is the way image search should be. It is stable under rotation, cropping, noise and loss of color. Very impressive! Needs more testing… Commercial justification is questionable - mobile search of DVDs? Link

April 4, 2007

More thoughts on image search

Filed under: Image search — Peter @ 3:27 am

Maybe I am too much of a skeptic, but when you see so many image search/recognition/match etc programs that don’t work you should ask yourself why? The reason is: the 3D to 2D conversion - information is lost when you represent 3D objects as 2D images. It is what’s called an “ill-posed problem”: a question that has many different answers. The same 2D image can come from two different 3D objects. This is what so many optical illusions are based on (consider Necker cube). Is it a ball or is it a concavity? If the light comes from the right it is convex, if from the left concave. Here’s a good example of that.

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