Mercurial > hg > octave-image
annotate NEWS @ 686:327a072f6480
image: update NEWS file with poisson option for imnoise
| author | carandraug |
|---|---|
| date | Tue, 04 Dec 2012 16:12:31 +0000 |
| parents | 4637e275a28d |
| children | 9c42e8039a1d |
| rev | line source |
|---|---|
| 673 | 1 Summary of important user-visible changes for image 2.0.1: |
| 2 ------------------------------------------------------------------- | |
| 3 | |
| 682 | 4 ** The following functions are new: |
| 5 | |
| 6 checkerboard | |
| 7 | |
| 673 | 8 ** The plot produced by `imhist' is correctly scaled on the X axis so that the |
| 9 colorbar corresponds to the actual intensity of the stems; the given | |
| 10 colormarp is used on the colorbar for indexed images; and the stems no | |
| 681 | 11 longer display the markers at their top. The Y axis is also adjusted in case |
| 12 of peaks with high values that prevent a good overview of the histogram. | |
| 673 | 13 |
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14 ** The `fftconv2' usage "fftconv2 (v1, v2, a)", for convolution of a matrix by |
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15 one vector in the column direction and another vector in the row direction, |
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16 has been removed. Please use conv2 for such cases. |
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17 |
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18 ** The function `rgbplot' accepts a style option which alows for a composite |
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19 display of a colormap. |
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20 |
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21 ** The option to create poisson noise to an image has been added to `imnoise'. |
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22 |
| 658 | 23 Summary of important user-visible changes for image 2.0.0: |
| 504 | 24 ------------------------------------------------------------------- |
| 25 | |
| 26 ** The following functions are new: | |
| 27 | |
| 658 | 28 analyze75info imabsdiff iptcheckconn |
| 29 analyze75read imadd iptcheckmap | |
| 30 analyze75write imbothat iptchecknargin | |
| 31 blockproc imcrop iptcheckstrs | |
| 32 bwlabeln imdivide iptnum2ordinal | |
| 33 getrangefromclass imlincomb iscolormap | |
| 34 im2int16 immultiply normxcorr2 | |
| 35 im2single imsubtract wavelength2rgb | |
| 504 | 36 |
| 37 ** The following functions have been deprecated in previous releases | |
| 38 of the image package and have now been removed: | |
| 39 | |
| 40 imginfo | |
| 41 | |
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42 ** The function `deriche' has been removed. |
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43 |
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44 ** The complete set of functions to work with Analyze 7.5 files has been |
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45 implemented. See `analyze75info', `analyze75read' and `analyze75write'. |
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46 |
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47 ** `graythresh' can optionally accept an histogram rather than an image. This |
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48 allows for preprocessing of the histogram previous to an automatic threshold |
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49 selection. |
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50 |
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51 ** Otsu's method for automatic threshold selection (default for `graythresh') |
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52 has been completely rewritten and should perform faster. Now, it can also |
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53 return a second value representing the ``goodness'' of the computed |
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54 threshold value (within class variance). |
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55 |
| 623 | 56 ** Alternative algorithms for automatic threshold have been implemented in |
| 57 `graythresh' (thanks to Antti Niemistö for releasing HistThresh toolbox | |
| 58 http://www.cs.tut.fi/~ant/histthresh/ from where many were ported, under a | |
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59 GPL license). Currently, the following algorithms have been implemented |
| 623 | 60 (see graythresh for notes and references): |
| 61 | |
| 658 | 62 concavity MaxEntropy minimum Otsu |
| 63 intermeans MaxLikelihood MinError percentile | |
| 64 intermodes mean moments | |
| 623 | 65 |
| 504 | 66 ** The following functions have been deprecated (see their help text |
| 67 for the recommended alternatives): | |
| 68 | |
| 658 | 69 blkproc bmpwrite dilate erode |
| 504 | 70 |
| 71 ** With the new function `imbothat' the transform option of | |
| 72 `imtophat' has been deprecated. | |
| 73 | |
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74 ** The following functions have had been changed for bug fixes and/or |
| 504 | 75 improved matlab compatibility |
| 76 | |
| 658 | 77 bwarea imhist im2uint8 isind |
| 78 bweuler imnoise im2uint16 mat2gray | |
| 79 bwfill conndef isbw rgb2gray | |
| 80 cmpermute im2bw isgray | |
| 81 cmunique im2double isrgb | |
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82 |
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83 ** `bwarea' now supports all image classes and considers objects all non |
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84 zero pixels (not all pixels higher than zero). |
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85 |
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86 ** `rgb2gray' now also supports images of the class single and performs a |
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87 weighted conversion to keep the image luminance instead of a the mean |
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88 through each color. |
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89 |
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90 ** `im2bw' now supports input images of the int16 class and deals better with |
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91 RGB images since it uses `rgb2gray' internally (see changes to rgb2gray). |
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92 Threshold is performed on all values greater than value instead of greater |
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93 than or equal. |
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94 |
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95 ** `imhist' is much more compatible with matlab and among other changes, |
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96 it now uses the whole range of the class for the histogram rather than |
| 618 | 97 the minimum and maximum of the input image and displays a colorbar under |
| 98 the histogram. | |
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99 |
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100 ** `isbw' now defines a black-and-white image as a binary non-sparse |
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101 matrix. This is compatible with matlab. To use the old behaviour, |
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102 use the new option for the call "isbw (img, "non-logical"). |
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103 For backwards compatibility, if a non-logical matrix of 0 and 1 is |
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104 used as input, `isbw' will still return true but a warning will be |
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105 issued since this will deprecated later. |
| 512 | 106 |
| 612 | 107 ** `isgray' now also returns true for matrices of the int16 class. |
| 108 | |
| 512 | 109 ** `isrgb' now returns false for logical matrix. |
| 562 | 110 |
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111 ** `tiff_tag_read' had several bug fixes and can now check IFDs beyond |
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112 the first. It can also accept mutiple tag values and IFDs simultaneously |
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113 and return a matrix of the values found. Its documentation has been |
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114 expanded (as well as an explanation of TIFF structure on the source) |
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115 |
| 629 | 116 ** For sake of matlab compatibility, the behaviour of `mat2gray' has been |
| 117 greatly changed. Among the changes, it will no longer swap the minimum and | |
| 118 maximum options if the first is larger than the later. Instead, will return | |
| 119 the image complement after truncation. Also, when the maximum and minimum | |
| 120 values are equal, `mat2gray' will truncate all values between 0 and 1. See | |
| 121 the help text (or source) for a detailed description of cautions. | |
| 122 | |
| 661 | 123 ** `bwfill' was fixed to always returns a logical matrix. |
| 124 | |
| 650 | 125 ** `imnoise' has been expanded to accept images of differente classes instead |
| 126 of only double and single. | |
| 127 | |
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128 ** The private function `__bwdist` has been renamed `__bwdist__` |
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129 |
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130 ** Package is now dependent on GNU Octave version 3.6.0 or later. |
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131 |
| 661 | 132 ** Package is now dependent on the signal package version 1.2.0 or later. |
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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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133 |
| 562 | 134 ** Package is no longer automatically loaded. |