Title:
Delac_Grgic_Face_Recognition
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Description: We can group the conclusions based on a level of compression and the probe sets into two
parts: i) higher compression rates (0.5, 0.3 and in some cases even 0.2 bpp) seem to be
suitable for recognizing faces with different expressions (
fb probe set) and images taken in
different illumination conditions (fc probe set) ii) lower compression rates (1 bpp) seem to
be suitable for recognizing images taken at different points in time (
dup1 and dup2 probe
set). Taking this analysis into account, it seems that the current practice of deciding on the
level of compression based on visual distortion of images is wrong. While the images
compressed to 0.3 bpp are visually significantly distorted, the recognition results are in
almost all experiments statistically indistinguishable from the results achieved by using
uncompressed images. In many cases these results are slightly better and in some cases even
significantly better than the ones achieved with uncompressed images.
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