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1996-09-07
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Fri Oct 20 19:25:20 1995 Eero Simoncelli (eero@tarpon.cis.upenn.edu)
* Added warning for images with dimensions d that are NOT
multiples of 2^(floor(log2(d/15))).
Sun Oct 15 13:07:04 1995 Eero Simoncelli (eero@tarpon.cis.upenn.edu)
* Speedup to unepic: In collapse_pyr, don't collapse zero
coefficients.
* changed scale_factor to 128: binsize=0 now produces something
closer to perfect reconstruction
Tue Oct 10 15:22:13 1995 Eero Simoncelli (eero@tarpon.cis.upenn.edu)
* Changed test_image to be a PGM file.
* Version 1.1 tarfile made
Sun Oct 8 15:22:57 1995 Eero Simoncelli (eero@tarpon.cis.upenn.edu)
* NON-SQUARE IMAGES ARE NOW HANDLED
(added butch@grip.cis.upenn.edu's mods to collapse_pyr).
* PGM FILES ARE NOW READ (BUT NOT WRITTEN)
(added butch's mods for reading PGM images).
* Slight mods to makefile: use $*.c instead of $< for denoting target
Tue Sep 19 18:40:57 1995 Eero Simoncelli (eero@tarpon.cis.upenn.edu)
* New file "USAGE" gives usage.
* quantize.c: minimal binsize is now set based on the maximum abs
value of pixels, rather than the range.
Mon Jun 7 20:25:07 1993 Eero Simoncelli (eero@tarpon.cis.upenn.edu)
* Minor change: fixed up some error messages.
* Added new internal_tranpose and internal_int_transpose that
perform in-place transpose on non-square matrices. This removes
all dependencies on square images except for collapse_pyr, which
needs to be rewritten.
July 1989 Eero Simoncelli (eero@whitechapel.media.mit.edu)
* Original source code released.