Mercurial > hg > octave-image
annotate NEWS @ 862:3ae7e227aa68
maint: release 2.2.0.
| author | Carnë Draug <carandraug@octave.org> |
|---|---|
| date | Wed, 08 Jan 2014 13:29:18 +0000 |
| parents | a2401673edc6 |
| children | dac2126ec030 a17b71b7e407 |
| rev | line source |
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| 862 | 1 Summary of important user-visible changes for image 2.2.0 (2014/01/08): |
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2 ------------------------------------------------------------------------- |
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4 ** The imerode and imdilate have been completely rewritten for increased |
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5 performance and many Matlab compatibility fixes. Performance gains between |
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6 1.5-30X have been demonstrated. Main compatibility changes include the |
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7 addition of the shape option, support for the strel class, and allowing |
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8 structuring elements and images of different classes. Non-flat grayscale |
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9 erosion and dilation has also been implemented by making use of the new |
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10 strel class. |
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11 |
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12 ** With the increased performance in imerode and imdilate, all other |
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13 functions that use them, such imopen and imclose, get an equivalent |
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14 performance boost. |
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15 |
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16 ** Most of bwmorph operations now support N dimensional images and have |
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17 increased performance. Other Matlab compatibility fixes have been |
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18 made such as displaying image when there's no output variable. |
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19 |
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20 ** The __spatial_filtering__ function has been mostly rewritten and |
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21 performs in approximattely 1/5 to 2/5 of the previous time, depending |
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22 on the filter. With this change, all functions dependent on it, |
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23 rangefilt, entropyfilt, ordfilt2/n, medfilt2/n, and stdfilt, will also |
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24 perform faster. |
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25 |
| 682 | 26 ** The following functions are new: |
| 27 | |
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28 bwareaopen impixel strel |
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29 checkerboard imtransform tformfwd |
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30 cp2tform intlut tforminv |
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31 findbounds labelmatrix ycbcr2rgb |
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32 imgradient maketform |
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33 imgradientxy montage |
| 682 | 34 |
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35 ** The following functions have been moved from the Octave Forge Image package |
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36 to GNU Octave core: |
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37 |
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38 cmpermute cmunique iscolormap rgbplot |
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39 |
| 754 | 40 ** The following functions have been deprecated in the previous release |
| 41 of the Image package and have now been removed: | |
| 42 | |
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43 blkproc bmpwrite dilate erode |
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44 |
| 720 | 45 ** The following functions have been deprecated (see their help text |
| 46 for the recommended alternatives): | |
| 47 | |
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48 bwborder imrotate_Fourier iptcheckstrs |
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49 impad iptchecknargin uintlut |
| 720 | 50 |
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51 ** The functions im2col and col2im has been completely rewritten for massive |
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52 performace increase (increases greater than 500X have been observed, with |
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53 biggest differences for smaller blocks and sliding option), and support of |
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54 N-dimensional blocks and images. |
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55 |
| 755 | 56 ** rgb2ycbcr was completely rewritten to accept images of other classes, and |
| 57 colormaps. A new argument was implemented to convert the RGB values | |
| 58 according to different standards. | |
| 59 | |
| 723 | 60 ** The use of non logical matrices to specify the neighborhood for the medfilt2 |
| 825 | 61 function has been deprecated. Also, when using a vector to specify the size |
| 62 of the neighborhood, the elements were swapped (first element is now the | |
| 63 number of rows and the second the number of columns). | |
| 723 | 64 |
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65 ** For consistency with other functions that allow specification of padding |
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66 values, the function padarray now accepts the string "zeros" as a valid |
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67 option. |
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68 |
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69 ** The plot produced by imhist is correctly scaled on the X axis so that the |
| 673 | 70 colorbar corresponds to the actual intensity of the stems; the given |
| 71 colormarp is used on the colorbar for indexed images; and the stems no | |
| 681 | 72 longer display the markers at their top. The Y axis is also adjusted in case |
| 73 of peaks with high values that prevent a good overview of the histogram. | |
| 673 | 74 |
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75 ** The option to create poisson noise to an image has been added to imnoise. |
| 695 | 76 |
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77 ** With the addition of the strel class, imdilate and imerode are able |
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78 to handle strel objects. |
| 695 | 79 |
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80 ** The performance of imresize has been greatly improved when using the |
| 718 | 81 nearest neighbor method for N or 1/N scale factors (e.g.: 2, 50, 1/4, 1/7). |
| 82 | |
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83 ** The imperspectivewarp, imremap, imresize, and imrotate functions will now |
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84 accept any interpolation method from the interp2 function thus extending |
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85 the available methods to "spline" and "pchip". This in addition to the |
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86 "bilinear" and "bicubic" methods (same as "linear" and "cubic" respectively) |
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87 which are kept for matlab compatibility. For the same reason, the |
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88 "triangle" method (interpolation kernel) has also been added (which is the |
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89 same as "linear" method). |
| 718 | 90 |
| 736 | 91 ** Bug fixes on the concavity, intermodes, maxlikelihood, and minimum methods |
| 92 of graythresh. | |
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93 |
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94 ** The bwdist function will now consider any non zero value as object pixels, |
| 745 | 95 the class of the distance matrix has changed to single, and indexes an |
| 96 uint dependent on the matrix size. | |
| 97 | |
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98 ** The transform option of imtophat has been removed (it was deprecated |
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99 in version 2.0.0) in favour of using imbothat. |
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100 |
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101 ** The function bwconncomp now returns the indices for each element in each |
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102 object, no longer the indices for the elements in the object boundaries |
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103 only. The connectivity default was changed to 8. |
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104 |
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105 ** The original Shepp-Logan model in the function phantom as been changed to |
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106 return all values in the range [0 1] rather than [0 2] by changing the |
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107 intensity of the first ellipse from 2 to 1. |
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108 |
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109 ** Other functions that have been changed for smaller bugfixes, increased |
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110 Matlab compatibility, or performance: |
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111 |
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112 bwlabel bwperim padarray |
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113 |
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114 ** The following functions now fully support matrices with an arbitrary |
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115 number of dimensions: |
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116 |
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117 bestblk col2im im2col |
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118 bwconncomp colfilt nlfilter |
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119 |
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120 |
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121 Summary of important user-visible changes for image 2.0.0 (2012/11/08): |
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122 ------------------------------------------------------------------------- |
| 504 | 123 |
| 124 ** The following functions are new: | |
| 125 | |
| 658 | 126 analyze75info imabsdiff iptcheckconn |
| 127 analyze75read imadd iptcheckmap | |
| 128 analyze75write imbothat iptchecknargin | |
| 129 blockproc imcrop iptcheckstrs | |
| 130 bwlabeln imdivide iptnum2ordinal | |
| 131 getrangefromclass imlincomb iscolormap | |
| 132 im2int16 immultiply normxcorr2 | |
| 133 im2single imsubtract wavelength2rgb | |
| 504 | 134 |
| 135 ** The following functions have been deprecated in previous releases | |
| 136 of the image package and have now been removed: | |
| 137 | |
| 138 imginfo | |
| 139 | |
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140 ** The function `deriche' has been removed. |
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141 |
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142 ** The complete set of functions to work with Analyze 7.5 files has been |
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143 implemented. See `analyze75info', `analyze75read' and `analyze75write'. |
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144 |
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145 ** `graythresh' can optionally accept an histogram rather than an image. This |
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146 allows for preprocessing of the histogram previous to an automatic threshold |
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147 selection. |
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148 |
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149 ** Otsu's method for automatic threshold selection (default for `graythresh') |
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150 has been completely rewritten and should perform faster. Now, it can also |
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151 return a second value representing the ``goodness'' of the computed |
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152 threshold value (within class variance). |
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153 |
| 623 | 154 ** Alternative algorithms for automatic threshold have been implemented in |
| 155 `graythresh' (thanks to Antti Niemistö for releasing HistThresh toolbox | |
| 156 http://www.cs.tut.fi/~ant/histthresh/ from where many were ported, under a | |
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157 GPL license). Currently, the following algorithms have been implemented |
| 623 | 158 (see graythresh for notes and references): |
| 159 | |
| 658 | 160 concavity MaxEntropy minimum Otsu |
| 161 intermeans MaxLikelihood MinError percentile | |
| 162 intermodes mean moments | |
| 623 | 163 |
| 504 | 164 ** The following functions have been deprecated (see their help text |
| 165 for the recommended alternatives): | |
| 166 | |
| 658 | 167 blkproc bmpwrite dilate erode |
| 504 | 168 |
| 169 ** With the new function `imbothat' the transform option of | |
| 170 `imtophat' has been deprecated. | |
| 171 | |
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172 ** The following functions have had been changed for bug fixes and/or |
| 504 | 173 improved matlab compatibility |
| 174 | |
| 658 | 175 bwarea imhist im2uint8 isind |
| 176 bweuler imnoise im2uint16 mat2gray | |
| 177 bwfill conndef isbw rgb2gray | |
| 178 cmpermute im2bw isgray | |
| 179 cmunique im2double isrgb | |
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180 |
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181 ** `bwarea' now supports all image classes and considers objects all non |
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182 zero pixels (not all pixels higher than zero). |
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183 |
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184 ** `rgb2gray' now also supports images of the class single and performs a |
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185 weighted conversion to keep the image luminance instead of a the mean |
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186 through each color. |
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187 |
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188 ** `im2bw' now supports input images of the int16 class and deals better with |
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189 RGB images since it uses `rgb2gray' internally (see changes to rgb2gray). |
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190 Threshold is performed on all values greater than value instead of greater |
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191 than or equal. |
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192 |
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193 ** `imhist' is much more compatible with matlab and among other changes, |
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194 it now uses the whole range of the class for the histogram rather than |
| 618 | 195 the minimum and maximum of the input image and displays a colorbar under |
| 196 the histogram. | |
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197 |
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198 ** `isbw' now defines a black-and-white image as a binary non-sparse |
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199 matrix. This is compatible with matlab. To use the old behaviour, |
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200 use the new option for the call "isbw (img, "non-logical"). |
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201 For backwards compatibility, if a non-logical matrix of 0 and 1 is |
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202 used as input, `isbw' will still return true but a warning will be |
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203 issued since this will deprecated later. |
| 512 | 204 |
| 612 | 205 ** `isgray' now also returns true for matrices of the int16 class. |
| 206 | |
| 512 | 207 ** `isrgb' now returns false for logical matrix. |
| 562 | 208 |
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209 ** `tiff_tag_read' had several bug fixes and can now check IFDs beyond |
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210 the first. It can also accept mutiple tag values and IFDs simultaneously |
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211 and return a matrix of the values found. Its documentation has been |
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212 expanded (as well as an explanation of TIFF structure on the source) |
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213 |
| 629 | 214 ** For sake of matlab compatibility, the behaviour of `mat2gray' has been |
| 215 greatly changed. Among the changes, it will no longer swap the minimum and | |
| 216 maximum options if the first is larger than the later. Instead, will return | |
| 217 the image complement after truncation. Also, when the maximum and minimum | |
| 218 values are equal, `mat2gray' will truncate all values between 0 and 1. See | |
| 219 the help text (or source) for a detailed description of cautions. | |
| 220 | |
| 661 | 221 ** `bwfill' was fixed to always returns a logical matrix. |
| 222 | |
| 650 | 223 ** `imnoise' has been expanded to accept images of differente classes instead |
| 224 of only double and single. | |
| 225 | |
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226 ** The private function `__bwdist` has been renamed `__bwdist__` |
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227 |
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228 ** Package is now dependent on GNU Octave version 3.6.0 or later. |
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229 |
| 661 | 230 ** Package is now dependent on the signal package version 1.2.0 or later. |
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626
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231 |
| 562 | 232 ** Package is no longer automatically loaded. |
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233 |
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234 |
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235 ******************************************************************************** |
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236 ** ** |
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237 ** NEWS below this point were written after their releases for history ** |
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238 ** purposes and extracted from the Octave Forge general NEWS. Previous to ** |
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239 ** the image package version 1.0.11, all Octave Forge packages would be ** |
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240 ** released at the same time. Previous to the package version 1.0.0 there ** |
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241 ** were monolithic releases with no actual packages. This means that some ** |
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242 ** releases actually had no changes in the image package itself or changes ** |
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243 ** were small compared to the whole Octave Forge project and so, not ** |
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244 ** mentioned on the NEWS file. Inspection of the actual log in the ** |
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245 ** repository should be used if exact details are required. ** |
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246 ** ** |
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247 ******************************************************************************** |
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248 |
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249 Summary of important user-visible changes for image 1.0.15 (2011/09/21): |
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250 -------------------------------------------------------------------------- |
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251 |
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252 Summary of important user-visible changes for image 1.0.14 (2011/04/12): |
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253 -------------------------------------------------------------------------- |
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254 |
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255 Summary of important user-visible changes for image 1.0.13 (2010/05/22): |
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256 -------------------------------------------------------------------------- |
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257 |
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258 Summary of important user-visible changes for image 1.0.12 (2010/03/22): |
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259 -------------------------------------------------------------------------- |
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260 |
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261 Summary of important user-visible changes for image 1.0.11 (2010/03/05): |
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262 -------------------------------------------------------------------------- |
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263 |
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264 Summary of important user-visible changes for image 1.0.10 (2009/06/07): |
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265 -------------------------------------------------------------------------- |
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266 |
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267 Summary of important user-visible changes for image 1.0.9 (2009/05/08): |
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268 ------------------------------------------------------------------------- |
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269 |
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270 ** The following functions are new: |
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271 |
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272 entropyfilt ordfiltn rangefilt stdfilt |
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273 |
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274 ** The following functions have been removed as they are now part of |
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275 Octave core: |
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276 |
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277 imread imwrite |
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278 |
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279 Summary of important user-visible changes for image 1.0.8 (2008/08/31): |
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280 ------------------------------------------------------------------------- |
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281 |
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282 ** Fix build issues with the last release. |
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283 |
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284 Summary of important user-visible changes for image 1.0.7 (2008/08/24): |
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285 ------------------------------------------------------------------------- |
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286 |
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287 Summary of important user-visible changes for image 1.0.6 (2008/04/29): |
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288 ------------------------------------------------------------------------- |
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289 |
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290 ** The following functions are new: |
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291 |
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292 imcomplement rgbplot |
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293 |
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294 ** Implemented support for bilateral filtering. |
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295 |
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296 ** Build fixes for new versions of ImageMagick. |
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297 |
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298 Summary of important user-visible changes for image 1.0.5 (2008/02/16): |
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299 ------------------------------------------------------------------------- |
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300 |
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301 ** The following functions are new: |
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302 |
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303 imfilter imsmooth |
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304 |
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305 Summary of important user-visible changes for image 1.0.4 (2007/12/12): |
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306 ------------------------------------------------------------------------- |
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307 |
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308 Summary of important user-visible changes for image 1.0.3 (2007/10/14): |
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309 ------------------------------------------------------------------------- |
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310 |
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311 Summary of important user-visible changes for image 1.0.2 (2007/07/26): |
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312 ------------------------------------------------------------------------- |
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313 |
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314 Summary of important user-visible changes for image 1.0.1 (2007/05/26): |
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315 ------------------------------------------------------------------------- |
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316 |
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317 Summary of important user-visible changes for image 1.0.0 (2007/03/28): |
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318 ------------------------------------------------------------------------- |
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319 |
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320 ** First non-monolithic release. |
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321 |
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322 ** The following functions are new: |
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323 |
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324 __bwarea fspecial impersepectivewap |
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325 apply graythresh imremap |
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326 bwarea im2double label2rgb |
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327 bwperim im2uint8 __magick_read__ |
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328 deriche im2uint16 |
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329 |
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330 ** Fixex for non 8bit images. |
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331 |
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332 ** Quantum sizes in imagemagick. |
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333 |
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334 ** Compatiability changes to imwrite, isgray and rgb2gray. |
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335 |
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336 ** imread, probe depth from bits rather than Red field, allows loading of gray |
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337 scale images. |
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338 |
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339 ** Convert all functions to use texinfo help. |
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340 |
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341 Summary of important user-visible changes for image (Octave Forge 2006.07.09): |
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342 -------------------------------------------------------------------------------- |
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343 |
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344 Summary of important user-visible changes for image (Octave Forge 2006.03.17): |
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345 -------------------------------------------------------------------------------- |
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346 |
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347 Summary of important user-visible changes for image (Octave Forge 2006.01.28): |
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348 -------------------------------------------------------------------------------- |
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349 |
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350 ** imread() now return the appropriate numeric class. Colour images are of size |
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351 MxNx3, gray images MxN. |
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352 |
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353 Summary of important user-visible changes for image (Octave Forge 2005.06.13): |
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354 -------------------------------------------------------------------------------- |
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355 |
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356 ** The following functions are new: |
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357 |
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358 bwarea imresize |
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359 |
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360 Summary of important user-visible changes for image (Octave Forge 2004.11.16): |
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361 -------------------------------------------------------------------------------- |
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362 |
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363 ** No important changes to the image package in this Octave Forge release. |
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364 |
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365 Summary of important user-visible changes for image (Octave Forge 2004.09.09): |
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366 -------------------------------------------------------------------------------- |
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367 |
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368 ** The following functions are new: |
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369 |
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370 applylut cmunique houghtf poly2mask uintlut |
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371 bestblk col2im im2col qtdecomp |
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372 blkproc conndef isrgb qtgetblk |
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373 bweuler dilate makelut qtsetblk |
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374 bwmorph erode nlfilter roicolor |
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375 cmpermute graycomatrix padarray stretchlim |
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376 |
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377 ** Implemented initial support for int* types. |
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378 |
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379 Summary of important user-visible changes for image (Octave Forge 2004.07.07): |
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380 -------------------------------------------------------------------------------- |
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381 |
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382 ** No important changes to the image package in this Octave Forge release. |
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383 |
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384 Summary of important user-visible changes for image (Octave Forge 2004.02.12): |
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385 -------------------------------------------------------------------------------- |
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386 |
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387 ** `imread' now supports 16-bit grayscale images. |
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388 |
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389 Summary of important user-visible changes for image (Octave Forge 2003.06.02): |
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390 -------------------------------------------------------------------------------- |
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391 |
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392 ** The following functions are new: |
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393 |
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394 rotate_scale |
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395 |
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396 Summary of important user-visible changes for image (Octave Forge 2003.02.22): |
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397 -------------------------------------------------------------------------------- |
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398 |
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399 ** No important changes to the image package in this Octave Forge release. |
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400 |
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401 Summary of important user-visible changes for image (Octave Forge 2002.11.30): |
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402 -------------------------------------------------------------------------------- |
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403 |
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404 ** The following functions are new: |
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405 |
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406 colfilt imginfo imrotate imshear imtranslate |
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407 |
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408 ** The `colorgradient' function now allow instantaneous transitions (weight 0) |
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409 |
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410 ** The `bwlabel' function has been implemented in C++ and may behave different. |
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411 |
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412 Summary of important user-visible changes for image (Octave Forge 2002.05.09): |
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413 -------------------------------------------------------------------------------- |
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414 |
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415 Summary of important user-visible changes for image (Octave Forge 2002.04.20): |
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416 -------------------------------------------------------------------------------- |
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417 |
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418 Summary of important user-visible changes for image (Octave Forge 2002.03.10): |
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419 -------------------------------------------------------------------------------- |
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420 |
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421 Summary of important user-visible changes for image (Octave Forge 2001.11.02): |
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422 -------------------------------------------------------------------------------- |
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423 |
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424 ** First release. |
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425 |