changelog

matlab的steel金字塔小波分解源代码

	   Log of changes made to matlabPyrTools code
		(important changes marked with **)
-----------------------------------------------------------------------	
2004-10-14  Eero Simoncelli  <[e-mail]>

	* Made new tarfile (version 1.3) 
	
	* Incorporated complex-valued steerable pyramid code (buildSCFpyr,
	buildSCFpyrLevs,reconSCFpyr) written by Javier Portilla in 9/97,
	and used in our work on texture representation/synthesis
	(Portilla&Simoncelli, Int'l Journal of Computer Vision,
	40(1):49-71, Dec 2000).
	
	* Incorporated imGradient.m from personal code.
	
	* reagan.pgm out.  feynam.pgm in
	
2004-03-20  Eero Simoncelli  <[e-mail]>

	* blur.m added (just calls blurDn and then upBlur).
	
2003-08-06  Eero Simoncelli  <[e-mail]>

	* blurDn.m (filt): Forced correct scaling of filters in  1D

2003-05-28  Eero Simoncelli  <[e-mail]>

	* incorporated setPyrBand.m from local code

2002-10-01  Eero Simoncelli  <[e-mail]>

	* incorporated clip.m from local code

2002-09-18  Eero Simoncelli  <[e-mail]>

	* pointOp.m: Added the new 'extrap' option for matlab's interp1 to
	  make this m-file version more compatible with the mex version.

Wed Aug 28 2002  Eero Simoncelli  <[e-mail]>

	* var2.m: now returns zero (instead of error) for matrix of size 1.
	* function VECTORIZE renamed to VECTIFY, since it was colliding
   	  with a function introduced in standard matlab.
	
Dec 27 2001  Eero Simoncelli  <[e-mail]>

	* Modified calls to upConv in reconSpyr.m and reconSpyrLevs.m so
	that the returned result is bound.  Previously, had relied on the
	MEX version of upConv to destructively modify the result array,
	users had been getting errors because they were using the m-file
	version of upConv.
	
Wed Sep 19 2001  Eero Simoncelli  <[e-mail]>
	
	* buildSFpyrLevs/reconSFpyrLevs: replace use of "i" with sqrt(-1), to
   	  avoid  problems if user rebinds it!
	
Wed Mar 28 10:22:01 2001  Eero Simoncelli  <[e-mail]>

	* Moved innerProd.m and all associated MEX files from the
	matlabLocal source tree into matlabPyrTools.  
	* Added innerProd to Contents.m
	* Updated/clarified WARNINGS in all *.m files that have MEX versions.
	
Tue Mar 27 11:21:53 2001  Eero Simoncelli  <[e-mail]>

	* Incorporated Windows MEX files (*.dll) into MEX subdirectory.
	 Windows users should either copy these into the main directory,
	 or put the MEX subdirectory in their matlab path.
	
Fri Mar 23 14:46:16 2001  Eero Simoncelli  <[e-mail]>

	* buildSFpyrLevs.m, reconSFpyrLevs.m: shift the raised-cosine
 	lookup table (Xrcos) instead of incrementing the log-radial image
 	(log_rad).  THis is more efficient...

Fri Oct  1 19:37:03 1999  Eero Simoncelli  <[e-mail]>

	* upConv.m: Did not return correct size result when STOP argument
 	was passed.  Thanks to [e-mail] for pointing this out.
	
Fri Sep 17 15:53:26 1999  Eero Simoncelli  <[e-mail]>

	* buildSFpyrLevs.m: Changed lutsize to 1024, giving a slight
	increase in accuracy.

Thu Feb 25 18:10:38 1999  Eero Simoncelli  <[e-mail]>

	* histo1.m: Modified histo.m to be more compatible (but still not
 	exactly the same) as the MEX file version.

Fri Jun 12 21:15:39 1998  Eero Simoncelli  <[e-mail]>

	* TUTORIALS pyramids.m upgraded.

Tue Feb 17 13:22:28 1998  Eero Simoncelli  <[e-mail]>

	* showIm.m: Dims are now printed followed by the zoom factor.

Mon Oct 13 14:49:51 1997  Eero Simoncelli  <[e-mail]>

	* mkSquare.m: Modified to do raised-cosine soft threshold
 	transitions.

Tue Oct  7 10:13:51 1997  Eero Simoncelli  <[e-mail]>

	* upConv.m: Argument order was wrong (this function is not used
 	anyway, unless you don't compile the MEX code). - Thanks to
 	[e-mail] for pointing this out.

Thu Sep 25 16:09:49 1997  Eero Simoncelli  <[e-mail]>

	* MEX/wrap.c: Changed #include <malloc.h> to <stdlib.h>, as
 	suggested by David Brainard.  * Incorporated Mac-compiled mex
 	files, courtesy of David Brainard.
	
Sat Sep  6 16:10:25 1997  Eero Simoncelli  <[e-mail]>

	* MEX/convolve.h:  abstracted out type of images with typedef image_type.
	Added ansi declarations.
	
Fri Aug 29 13:49:16 1997  Eero Simoncelli  <[e-mail]>

	** showIm.m: Modified to behave better under resizing (and printing):
	resets axis units to "normalized".

Thu Aug 28 22:56:52 1997  Eero Simoncelli  <[e-mail]>

	** MEX/edges.c: reflect1, reflect2, repeat, extend upgraded to work
 	properly for non-symmetric filters.  reflect2 and extend were also
 	broken for upConv.  Added qreflect2 to handle even-length QMF's
 	which broke under the reflect2 modification.
	* Added example code to TUTORIALS/matlabPyrTools to illustrate the
	boundary-handling behavior...
	
Thu Aug 21 13:34:17 1997  Eero Simoncelli  <[e-mail]>

	* var2, skew2, kurt2: modified to return complex values for complex images.
	* imStats.m: now gives an error for complex args.

Thu Aug 14 15:24:29 1997  Eero Simoncelli  <[e-mail]>

	* Modified shift.m: negated the meaning of the offset parameter,
	such that RES=shift(MTX,OFFSET) means RES(POS)=MTX(POS-OFFSET)
	(this is more intuitive).

Thu Jul 10 17:06:52 1997  Eero Simoncelli  <[e-mail]>

	* Modified MEX/Makefile-* to be consistent with matlab5:
	   - call mex instead of cmex
	   - use -V4 flag (creating matlab v4 compatible binaries)
	
	* showIm.m (xlbl_offset): Modified to use "points" units, so that
	printed images look correct.  Still slightly busted for arbitrary figure
	window sizes and for printing.
	
	* Modified upConv.c: does not return ANYTHING if you pass a result
 	argument (this had been causing occasional problems with matlab's 
	memory manager).
	
Mon Jun 30 12:09:30 1997  Eero Simoncelli  <[e-mail]>

	* reconSFpyr.m (res): now returns real part (oops).

	* reconSpyrLevs.m (maxLev): got rid of superfluous nbands argument
 	(can be calculated from bfilts).

Mon May 26 12:29:54 1997  Eero Simoncelli  <[e-mail]>

	* showIm.m/pgmWrite.m: Modified 'auto3'-scaling to use a
 	histogram.  This gives a significant speedup.

	* fixed a few minor bugs in the TUTORIALS, having to do with 
	matching image sizes to the machine speed...

Sat May 10 17:27:25 1997  Eero Simoncelli  <[e-mail]>

	* pgmWrite.m: fixed auto-scaling bug.  Added new scaling
	calculations, parallel to those of imShow.

Fri May  9 09:02:56 1997  Eero Simoncelli  <[e-mail]>

	* buildSFpyr.m: Changed NBANDS argument to be ORDER, which is one
 	less than the number of orientation bands.  This is consistent
 	with the derivative order, and the labels on the spNFilters files.

Tue May  6 19:08:18 1997  Eero Simoncelli  <[e-mail]>

	** Added buildSFpyr, reconSFpyr: Steerable pyramids constructed
        in the Fourier domain.  Radial functions tile, with a
	raised-cosine falloff.  Angular functions are
        cos(theta-k\pi/(K+1))^K, where K is the order (number of bands
	minus 1).  Compared to the convolution version:
	    + Reconstruction is exact (within floating point errors) 
	    + Can produce any number of orientation bands. 
	    - Typically slower.
	    - Boundary-handling must be circular.
	Could be made much more efficient by taking advantage of symmetries in
	the fft!
	
	* Added example usage of Fourier steerable pyramid to TUTORIALS/pyramids.m
	
	* steer.m:  fixed for harmonic lists including zero.

Sun May  4 15:16:10 1997  Eero Simoncelli  <[e-mail]>

	* MEX/Makefile-linux: created.
	
	* spyrHt, spyrNumBands: Modified to return 0 for pyramids of height 0.
	
	* reconWpyr.m: utilize desctructive addition in calls to upConv.
	
	* reconSpyr.m: Added error check to ensure consistancy between
	pyramid and filter file.  Utilize destructive addition in upConv
	call on highpass band.  Modified to work properly with pyramids of
	height 0.