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Lenna Results Page

Coded Lenna Images

Here's the ubiquitous Lenna. This has become a reference image by which different encoding schemes are compared. Depending upon your point of view, this is either good or bad. Above is the original image which has been encoded below by the adaptive wavelet coder.

By clicking on each of the buttons below, you will bring up a rather large 512 X 1048 image. The left-hand image is the encoded image, and the right-hand one is a difference between the original Lenna and the compressed version (difference images not yet available for JPEG).

3 Map Classification Adaptive Wavelet Coder Results

1.0 bpp (bits/pixel) PSNR: 40.66 dB

0.5 bpp (bits/pixel) PSNR: 37.27 dB

0.25 bpp (bits/pixel) PSNR: 33.91 dB

4 Map Classification Adaptive Wavelet Coder Results

1.0 bpp (bits/pixel) PSNR: 40.49 dB

0.5 bpp (bits/pixel) PSNR: 37.06 dB

0.25 bpp (bits/pixel) PSNR: 33.43 dB

Baseline JPEG Results

1.0 bpp (bits/pixel) PSNR: 37.75 dB

0.5 bpp (bits/pixel) PSNR: 34.63 dB

0.25 bpp (bits/pixel) PSNR: 30.41 dB

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James H. Kasner
Signal Processing and Coding Laboratory
Department of Electrical and Computer Engineering
The University of Arizona
Tucson, AZ 85721
(602) 621-9769
kasner (at) ece (dot) arizona (dot) edu