Summary
This paper presents basically an image search where the input image is a sketch. The sketch is actually the edges of the image to be searched for. The feature of the images to which the sketch is compared is edge histogram.
It took 3 seconds to search a 1.5 million image bank which is a good performance I think.
Discussion
The image comparison and image search solutions are becoming more widely used and those which rely on the edges can use sketch as their query since a sketch can be considered the edges of an image
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