1.6 Image querying with complex wavelets: results of experiments

We decided that for testing purposes we would test images from three categories:

• hand-drawn images (using mspaint)
• blurred images (which emulates scanned images)
• shifted images

From each category, we performed five tests using query images based on images from our database. For every test image we used, except for hand drawn image 5 (shown below), the expected image was returned in the top three percent of matched images when using the complex wavelet algorithm. Results using the real wavelet algorithm were similar, except for on shifted images, where the query images had significantly lower rankings (on the range of top 15%) than from our algorithm.