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image: mention changes of mat2gray on NEWS
author carandraug
date Sat, 29 Sep 2012 17:10:20 +0000
parents 22009b99ee6b
children 039a1c0141b3
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1 Summary of important user-visible changes for image 1.1.0:
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2 -------------------------------------------------------------------
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3
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4 ** The following functions are new:
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5
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4c92bffbf4cc analyze75: new functions analyze75read and analyze75info from Adam H Aitkenhead <adamaitkenhead@hotmail.com> through mailing list
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6 analyze75info
4c92bffbf4cc analyze75: new functions analyze75read and analyze75info from Adam H Aitkenhead <adamaitkenhead@hotmail.com> through mailing list
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7 analyze75read
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8 blockproc
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9 bwlabeln
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10 getrangefromclass
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18070036aca2 im2int16: new function for image package and updated list of functinos on seealso help text
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11 im2int16
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be52435a5794 im2single: new function for image package
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12 im2single
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25b2d4cf36bf imabsdiff: new function
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13 imabsdiff
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14 imadd
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15 imbothat
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7fcfcce0b2f9 imcrop: new function for image package. Submitted to mailing list by Pablo Rossi <prossi@ing.unrc.edu.ar>
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16 imcrop
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3210b54557be imdivide immultiply: new functions
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17 imdivide
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5750f9aa690a imlincomb: new function
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18 imlincomb
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3210b54557be imdivide immultiply: new functions
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19 immultiply
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3d630d000a58 imsubtract: new function
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20 imsubtract
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21 iptcheckconn
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22 iptcheckmap
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23 iptchecknargin
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24 iptcheckstrs
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25 iptnum2ordinal
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c47fa2969872 iscolormap: new function to image package
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26 iscolormap
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636b9e92019c normxcorr2: new function is wrapper for xcorr2 from signal package
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27 normxcorr2
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154ffb5d4efe wavelength: new function to image package. Contributed by William Krekeler <WKrekeler@cleanearthtech.com>
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28 wavelength2rgb
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29
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30 ** The following functions have been deprecated in previous releases
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31 of the image package and have now been removed:
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32
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33 imginfo
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34
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35 ** The function `graythresh' now returns a second value representing the
f128e24f3b22 graythresh: return goodness of computed value. Prepare code for multiple algorithms. Avoid var names that shadow core functions.
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36 ``goodness'' of the computed threshold value.
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37
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38 ** Alternative algorithms for automatic threshold have been implemented in
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39 `graythresh' (thanks to Antti Niemistö for releasing HistThresh toolbox
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40 http://www.cs.tut.fi/~ant/histthresh/ from where many were ported, under a
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41 GPL license. Currently, the following algorithms have been implemented
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42 (see graythresh for notes and references):
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43
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44 concavity
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45 intermeans
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46 intermodes
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47 MaxEntropy
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48 MaxLikelihood
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49 mean
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50 minimum
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51 MinError
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52 moments
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53 Otsu
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54 percentile
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55
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56 ** The following functions have been deprecated (see their help text
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57 for the recommended alternatives):
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58
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59 blkproc
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60 bmpwrite
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61 dilate
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62 erode
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63
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64 ** With the new function `imbothat' the transform option of
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65 `imtophat' has been deprecated.
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66
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67 ** The following functions have had been changed for bug fixes and/or
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68 improved matlab compatibility
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69
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70 bwarea
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71 bweuler
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72 bwfill
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73 imhist
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74 conndef
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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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75 im2bw
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23a7bdae105c im2double: added support for binary images (patch by Martin Helm <martin@mhelm.de>)
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76 im2double
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30f0a2a06f02 im2uint8: matlab compatibility and support for indexed images
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77 im2uint8
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26f74317f196 im2uint16: matlab compatibility and support for indexed images
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78 im2uint16
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79 isbw
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80 isgray
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81 isrgb
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82 isind
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83 mat2gray
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84 rgb2gray
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85
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86 ** `bwarea' now supports all image classes and considers objects all non
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87 zero pixels (not all pixels higher than zero).
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88
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89 ** `rgb2gray' now also supports images of the class single and performs a
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90 weighted conversion to keep the image luminance instead of a the mean
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91 through each color.
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92
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93 ** `im2bw' now supports input images of the int16 class and deals better with
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94 RGB images since it uses `rgb2gray' internally (see changes to rgb2gray).
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95 Threshold is performed on all values greater than value instead of greater
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96 than or equal.
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97
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98 ** `imhist' is much more compatible with matlab and among other changes,
7db61a0a2632 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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99 it now uses the whole range of the class for the histogram rather than
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100 the minimum and maximum of the input image and displays a colorbar under
41c917791057 imhist: display colorbar under histogram
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101 the histogram.
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102
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103 ** `isbw' now defines a black-and-white image as a binary non-sparse
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104 matrix. This is compatible with matlab. To use the old behaviour,
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105 use the new option for the call "isbw (img, "non-logical").
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106 For backwards compatibility, if a non-logical matrix of 0 and 1 is
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107 used as input, `isbw' will still return true but a warning will be
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108 issued since this will deprecated later.
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109
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110 ** `isgray' now also returns true for matrices of the int16 class.
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111
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112 ** `isrgb' now returns false for logical matrix.
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113
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114 ** `tiff_tag_read' had several bug fixes and can now check IFDs beyond
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115 the first. It can also accept mutiple tag values and IFDs simultaneously
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116 and return a matrix of the values found. Its documentation has been
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117 expanded (as well as an explanation of TIFF structure on the source)
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118
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119 ** For sake of matlab compatibility, the behaviour of `mat2gray' has been
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120 greatly changed. Among the changes, it will no longer swap the minimum and
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121 maximum options if the first is larger than the later. Instead, will return
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122 the image complement after truncation. Also, when the maximum and minimum
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123 values are equal, `mat2gray' will truncate all values between 0 and 1. See
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124 the help text (or source) for a detailed description of cautions.
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125
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126 ** Package is now dependent on GNU Octave version 3.6.0 or later.
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127
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128 ** Package is now dependent on the signal package version 1.2.0 or later..
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129
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130 ** Package is no longer automatically loaded.