CogniSign Blog

News, updates and commentary on CogniSign products and the world of image recognition technology.

Wednesday, February 07, 2007

Use of both color AND shape for visual search

In our last posting, we wrote about indexing approaches used by our competitors, and the fact that CogniSign’s technology is different because it allows the visual search process to focus on key features of a source image. The ability of our technology to consider both color and shape features is a great example of this capability. Indexing approaches used by our competitors summarize the images using numerical attributes (values). Their technology summarizes things like color pattern dispersion, textural qualities of the image (is it a few bold shapes of finely detailed?), etc. But summarizing an image means that you can’t look at key features of it very closely, or prioritize any of them in the search. Key shape features are a good example of a local feature that gets lost in indexing. The CogniSign technology allows you to look at color as a feature, and any type of geometric shape as a feature also, in any combination. This is all accomplished using the same core visual search algorithm. Needless to say, this is more human like!

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