Mercurial > hg > octave-image
annotate NEWS @ 681:341c8d3ee3c5
imhist: adjust y axis for outliers
| author | carandraug |
|---|---|
| date | Fri, 23 Nov 2012 00:09:27 +0000 |
| parents | d1a33cc6897e |
| children | 205e5f657033 |
| rev | line source |
|---|---|
| 673 | 1 Summary of important user-visible changes for image 2.0.1: |
| 2 ------------------------------------------------------------------- | |
| 3 | |
| 4 ** The plot produced by `imhist' is correctly scaled on the X axis so that the | |
| 5 colorbar corresponds to the actual intensity of the stems; the given | |
| 6 colormarp is used on the colorbar for indexed images; and the stems no | |
| 681 | 7 longer display the markers at their top. The Y axis is also adjusted in case |
| 8 of peaks with high values that prevent a good overview of the histogram. | |
| 673 | 9 |
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fftconv2: warn if using with 1 matrix and 2 vectors as this is no longer working. Marked failing tests with xtest
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10 ** The `fftconv2' usage "fftconv2 (v1, v2, a)", for convolution of a matrix by |
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11 one vector in the column direction and another vector in the row direction, |
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12 has been removed. Please use conv2 for such cases. |
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13 |
| 658 | 14 Summary of important user-visible changes for image 2.0.0: |
| 504 | 15 ------------------------------------------------------------------- |
| 16 | |
| 17 ** The following functions are new: | |
| 18 | |
| 658 | 19 analyze75info imabsdiff iptcheckconn |
| 20 analyze75read imadd iptcheckmap | |
| 21 analyze75write imbothat iptchecknargin | |
| 22 blockproc imcrop iptcheckstrs | |
| 23 bwlabeln imdivide iptnum2ordinal | |
| 24 getrangefromclass imlincomb iscolormap | |
| 25 im2int16 immultiply normxcorr2 | |
| 26 im2single imsubtract wavelength2rgb | |
| 504 | 27 |
| 28 ** The following functions have been deprecated in previous releases | |
| 29 of the image package and have now been removed: | |
| 30 | |
| 31 imginfo | |
| 32 | |
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deriche: removing function due to non-standard license
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33 ** The function `deriche' has been removed. |
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34 |
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35 ** The complete set of functions to work with Analyze 7.5 files has been |
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36 implemented. See `analyze75info', `analyze75read' and `analyze75write'. |
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37 |
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632
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graythresh: accept histogram as input. Also, there's no code left from Barre-Piquot and removed from copyright.
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38 ** `graythresh' can optionally accept an histogram rather than an image. This |
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graythresh: accept histogram as input. Also, there's no code left from Barre-Piquot and removed from copyright.
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39 allows for preprocessing of the histogram previous to an automatic threshold |
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40 selection. |
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41 |
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42 ** Otsu's method for automatic threshold selection (default for `graythresh') |
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43 has been completely rewritten and should perform faster. Now, it can also |
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44 return a second value representing the ``goodness'' of the computed |
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graythresh: accept histogram as input. Also, there's no code left from Barre-Piquot and removed from copyright.
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45 threshold value (within class variance). |
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570
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graythresh: return goodness of computed value. Prepare code for multiple algorithms. Avoid var names that shadow core functions.
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46 |
| 623 | 47 ** Alternative algorithms for automatic threshold have been implemented in |
| 48 `graythresh' (thanks to Antti Niemistö for releasing HistThresh toolbox | |
| 49 http://www.cs.tut.fi/~ant/histthresh/ from where many were ported, under a | |
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632
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50 GPL license). Currently, the following algorithms have been implemented |
| 623 | 51 (see graythresh for notes and references): |
| 52 | |
| 658 | 53 concavity MaxEntropy minimum Otsu |
| 54 intermeans MaxLikelihood MinError percentile | |
| 55 intermodes mean moments | |
| 623 | 56 |
| 504 | 57 ** The following functions have been deprecated (see their help text |
| 58 for the recommended alternatives): | |
| 59 | |
| 658 | 60 blkproc bmpwrite dilate erode |
| 504 | 61 |
| 62 ** With the new function `imbothat' the transform option of | |
| 63 `imtophat' has been deprecated. | |
| 64 | |
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image: added important note on NEWS about new behaviour of isbw
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65 ** The following functions have had been changed for bug fixes and/or |
| 504 | 66 improved matlab compatibility |
| 67 | |
| 658 | 68 bwarea imhist im2uint8 isind |
| 69 bweuler imnoise im2uint16 mat2gray | |
| 70 bwfill conndef isbw rgb2gray | |
| 71 cmpermute im2bw isgray | |
| 72 cmunique im2double isrgb | |
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609
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rgb2gray: perform weighted conversion based on luminance values
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73 |
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615
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bwarea: accept any class and objects are all non-zero instead of all higher than zero
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74 ** `bwarea' now supports all image classes and considers objects all non |
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75 zero pixels (not all pixels higher than zero). |
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76 |
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609
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rgb2gray: perform weighted conversion based on luminance values
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77 ** `rgb2gray' now also supports images of the class single and performs a |
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rgb2gray: perform weighted conversion based on luminance values
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78 weighted conversion to keep the image luminance instead of a the mean |
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rgb2gray: perform weighted conversion based on luminance values
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79 through each color. |
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80 |
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613
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im2bw: added tests, use more of other functions, more input check at start, support for int16 input images
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81 ** `im2bw' now supports input images of the int16 class and deals better with |
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c33c12769b71
im2bw: added tests, use more of other functions, more input check at start, support for int16 input images
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82 RGB images since it uses `rgb2gray' internally (see changes to rgb2gray). |
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616
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im2bw: threshold should be greater than only (matlab compatible)
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83 Threshold is performed on all values greater than value instead of greater |
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84 than or equal. |
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85 |
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564
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imhist: complete rewrite of the function to be matlab compatible. Added test cases. No old code left so removed old copyright owners.
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86 ** `imhist' is much more compatible with matlab and among other changes, |
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7db61a0a2632
imhist: complete rewrite of the function to be matlab compatible. Added test cases. No old code left so removed old copyright owners.
carandraug
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563
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87 it now uses the whole range of the class for the histogram rather than |
| 618 | 88 the minimum and maximum of the input image and displays a colorbar under |
| 89 the histogram. | |
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564
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carandraug
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90 |
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506
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91 ** `isbw' now defines a black-and-white image as a binary non-sparse |
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92 matrix. This is compatible with matlab. To use the old behaviour, |
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93 use the new option for the call "isbw (img, "non-logical"). |
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94 For backwards compatibility, if a non-logical matrix of 0 and 1 is |
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95 used as input, `isbw' will still return true but a warning will be |
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96 issued since this will deprecated later. |
| 512 | 97 |
| 612 | 98 ** `isgray' now also returns true for matrices of the int16 class. |
| 99 | |
| 512 | 100 ** `isrgb' now returns false for logical matrix. |
| 562 | 101 |
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563
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102 ** `tiff_tag_read' had several bug fixes and can now check IFDs beyond |
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103 the first. It can also accept mutiple tag values and IFDs simultaneously |
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104 and return a matrix of the values found. Its documentation has been |
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105 expanded (as well as an explanation of TIFF structure on the source) |
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106 |
| 629 | 107 ** For sake of matlab compatibility, the behaviour of `mat2gray' has been |
| 108 greatly changed. Among the changes, it will no longer swap the minimum and | |
| 109 maximum options if the first is larger than the later. Instead, will return | |
| 110 the image complement after truncation. Also, when the maximum and minimum | |
| 111 values are equal, `mat2gray' will truncate all values between 0 and 1. See | |
| 112 the help text (or source) for a detailed description of cautions. | |
| 113 | |
| 661 | 114 ** `bwfill' was fixed to always returns a logical matrix. |
| 115 | |
| 650 | 116 ** `imnoise' has been expanded to accept images of differente classes instead |
| 117 of only double and single. | |
| 118 | |
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119 ** The private function `__bwdist` has been renamed `__bwdist__` |
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120 |
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121 ** Package is now dependent on GNU Octave version 3.6.0 or later. |
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122 |
| 661 | 123 ** Package is now dependent on the signal package version 1.2.0 or later. |
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626
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graythresh: implementation of concavity, intermeans, intermodes, MaxEntropy, MaxLikelihood, mean, minimum, MinError, moments and percentile methods from the HistThresh toolbox
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124 |
| 562 | 125 ** Package is no longer automatically loaded. |