Mercurial > hg > octave-image
annotate NEWS @ 871:714073ad045f
im2bw.m: display image instead of printint to stdout, when nargout is zero.
author | Carnë Draug <carandraug@octave.org> |
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date | Tue, 18 Feb 2014 23:10:42 +0000 |
parents | dac2126ec030 |
children | f1cf02800a87 |
rev | line source |
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1 Summary of important user-visible changes for image 2.4.0 (yyyy/mm/dd): |
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2 ------------------------------------------------------------------------- |
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3 |
871
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4 ** The following functions will display the output image as a figure |
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5 instead of printing to the command line, when there are no output |
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6 arguments: |
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7 |
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8 im2bw |
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9 |
864
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10 ** Deprecated functions. |
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11 |
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12 The following functions were deprecated in image 2.2.0 and have been |
dac2126ec030
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13 removed from image 2.4.0. |
dac2126ec030
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14 |
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15 bwborder iptchecknargin readexif |
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16 impad iptcheckstrs |
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17 imrotate_Fourier uintlut |
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18 |
862 | 19 Summary of important user-visible changes for image 2.2.0 (2014/01/08): |
768
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20 ------------------------------------------------------------------------- |
673 | 21 |
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22 ** The imerode and imdilate have been completely rewritten for increased |
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23 performance and many Matlab compatibility fixes. Performance gains between |
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24 1.5-30X have been demonstrated. Main compatibility changes include the |
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25 addition of the shape option, support for the strel class, and allowing |
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26 structuring elements and images of different classes. Non-flat grayscale |
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27 erosion and dilation has also been implemented by making use of the new |
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28 strel class. |
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29 |
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30 ** With the increased performance in imerode and imdilate, all other |
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31 functions that use them, such imopen and imclose, get an equivalent |
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32 performance boost. |
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33 |
802
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34 ** Most of bwmorph operations now support N dimensional images and have |
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35 increased performance. Other Matlab compatibility fixes have been |
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36 made such as displaying image when there's no output variable. |
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37 |
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38 ** The __spatial_filtering__ function has been mostly rewritten and |
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39 performs in approximattely 1/5 to 2/5 of the previous time, depending |
787
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40 on the filter. With this change, all functions dependent on it, |
63acfe78a7ed
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41 rangefilt, entropyfilt, ordfilt2/n, medfilt2/n, and stdfilt, will also |
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42 perform faster. |
771
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43 |
682 | 44 ** The following functions are new: |
45 | |
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46 bwareaopen impixel strel |
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47 checkerboard imtransform tformfwd |
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48 cp2tform intlut tforminv |
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49 findbounds labelmatrix ycbcr2rgb |
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50 imgradient maketform |
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51 imgradientxy montage |
682 | 52 |
753
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53 ** The following functions have been moved from the Octave Forge Image package |
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54 to GNU Octave core: |
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55 |
861
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56 cmpermute cmunique iscolormap rgbplot |
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57 |
754 | 58 ** The following functions have been deprecated in the previous release |
59 of the Image package and have now been removed: | |
60 | |
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61 blkproc bmpwrite dilate erode |
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62 |
720 | 63 ** The following functions have been deprecated (see their help text |
64 for the recommended alternatives): | |
65 | |
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66 bwborder imrotate_Fourier iptcheckstrs |
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67 impad iptchecknargin uintlut |
720 | 68 |
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69 ** The functions im2col and col2im has been completely rewritten for massive |
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70 performace increase (increases greater than 500X have been observed, with |
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71 biggest differences for smaller blocks and sliding option), and support of |
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72 N-dimensional blocks and images. |
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73 |
755 | 74 ** rgb2ycbcr was completely rewritten to accept images of other classes, and |
75 colormaps. A new argument was implemented to convert the RGB values | |
76 according to different standards. | |
77 | |
723 | 78 ** The use of non logical matrices to specify the neighborhood for the medfilt2 |
825 | 79 function has been deprecated. Also, when using a vector to specify the size |
80 of the neighborhood, the elements were swapped (first element is now the | |
81 number of rows and the second the number of columns). | |
723 | 82 |
726
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83 ** For consistency with other functions that allow specification of padding |
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84 values, the function padarray now accepts the string "zeros" as a valid |
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85 option. |
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86 |
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87 ** The plot produced by imhist is correctly scaled on the X axis so that the |
673 | 88 colorbar corresponds to the actual intensity of the stems; the given |
89 colormarp is used on the colorbar for indexed images; and the stems no | |
681 | 90 longer display the markers at their top. The Y axis is also adjusted in case |
91 of peaks with high values that prevent a good overview of the histogram. | |
673 | 92 |
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93 ** The option to create poisson noise to an image has been added to imnoise. |
695 | 94 |
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95 ** With the addition of the strel class, imdilate and imerode are able |
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96 to handle strel objects. |
695 | 97 |
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98 ** The performance of imresize has been greatly improved when using the |
718 | 99 nearest neighbor method for N or 1/N scale factors (e.g.: 2, 50, 1/4, 1/7). |
100 | |
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101 ** The imperspectivewarp, imremap, imresize, and imrotate functions will now |
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102 accept any interpolation method from the interp2 function thus extending |
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103 the available methods to "spline" and "pchip". This in addition to the |
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104 "bilinear" and "bicubic" methods (same as "linear" and "cubic" respectively) |
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105 which are kept for matlab compatibility. For the same reason, the |
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106 "triangle" method (interpolation kernel) has also been added (which is the |
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107 same as "linear" method). |
718 | 108 |
736 | 109 ** Bug fixes on the concavity, intermodes, maxlikelihood, and minimum methods |
110 of graythresh. | |
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111 |
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112 ** The bwdist function will now consider any non zero value as object pixels, |
745 | 113 the class of the distance matrix has changed to single, and indexes an |
114 uint dependent on the matrix size. | |
115 | |
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116 ** The transform option of imtophat has been removed (it was deprecated |
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117 in version 2.0.0) in favour of using imbothat. |
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118 |
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119 ** The function bwconncomp now returns the indices for each element in each |
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120 object, no longer the indices for the elements in the object boundaries |
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121 only. The connectivity default was changed to 8. |
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122 |
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123 ** The original Shepp-Logan model in the function phantom as been changed to |
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124 return all values in the range [0 1] rather than [0 2] by changing the |
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125 intensity of the first ellipse from 2 to 1. |
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126 |
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127 ** Other functions that have been changed for smaller bugfixes, increased |
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128 Matlab compatibility, or performance: |
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129 |
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130 bwlabel bwperim padarray |
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131 |
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132 ** The following functions now fully support matrices with an arbitrary |
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133 number of dimensions: |
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134 |
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135 bestblk col2im im2col |
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136 bwconncomp colfilt nlfilter |
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137 |
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138 |
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139 Summary of important user-visible changes for image 2.0.0 (2012/11/08): |
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140 ------------------------------------------------------------------------- |
504 | 141 |
142 ** The following functions are new: | |
143 | |
658 | 144 analyze75info imabsdiff iptcheckconn |
145 analyze75read imadd iptcheckmap | |
146 analyze75write imbothat iptchecknargin | |
147 blockproc imcrop iptcheckstrs | |
148 bwlabeln imdivide iptnum2ordinal | |
149 getrangefromclass imlincomb iscolormap | |
150 im2int16 immultiply normxcorr2 | |
151 im2single imsubtract wavelength2rgb | |
504 | 152 |
153 ** The following functions have been deprecated in previous releases | |
154 of the image package and have now been removed: | |
155 | |
156 imginfo | |
157 | |
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158 ** The function `deriche' has been removed. |
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159 |
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160 ** The complete set of functions to work with Analyze 7.5 files has been |
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161 implemented. See `analyze75info', `analyze75read' and `analyze75write'. |
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162 |
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163 ** `graythresh' can optionally accept an histogram rather than an image. This |
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164 allows for preprocessing of the histogram previous to an automatic threshold |
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165 selection. |
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166 |
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167 ** Otsu's method for automatic threshold selection (default for `graythresh') |
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168 has been completely rewritten and should perform faster. Now, it can also |
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169 return a second value representing the ``goodness'' of the computed |
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170 threshold value (within class variance). |
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171 |
623 | 172 ** Alternative algorithms for automatic threshold have been implemented in |
173 `graythresh' (thanks to Antti Niemistö for releasing HistThresh toolbox | |
174 http://www.cs.tut.fi/~ant/histthresh/ from where many were ported, under a | |
632
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175 GPL license). Currently, the following algorithms have been implemented |
623 | 176 (see graythresh for notes and references): |
177 | |
658 | 178 concavity MaxEntropy minimum Otsu |
179 intermeans MaxLikelihood MinError percentile | |
180 intermodes mean moments | |
623 | 181 |
504 | 182 ** The following functions have been deprecated (see their help text |
183 for the recommended alternatives): | |
184 | |
658 | 185 blkproc bmpwrite dilate erode |
504 | 186 |
187 ** With the new function `imbothat' the transform option of | |
188 `imtophat' has been deprecated. | |
189 | |
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190 ** The following functions have had been changed for bug fixes and/or |
504 | 191 improved matlab compatibility |
192 | |
658 | 193 bwarea imhist im2uint8 isind |
194 bweuler imnoise im2uint16 mat2gray | |
195 bwfill conndef isbw rgb2gray | |
196 cmpermute im2bw isgray | |
197 cmunique im2double isrgb | |
609
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198 |
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199 ** `bwarea' now supports all image classes and considers objects all non |
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200 zero pixels (not all pixels higher than zero). |
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201 |
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202 ** `rgb2gray' now also supports images of the class single and performs a |
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203 weighted conversion to keep the image luminance instead of a the mean |
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204 through each color. |
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205 |
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206 ** `im2bw' now supports input images of the int16 class and deals better with |
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207 RGB images since it uses `rgb2gray' internally (see changes to rgb2gray). |
616
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208 Threshold is performed on all values greater than value instead of greater |
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209 than or equal. |
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210 |
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211 ** `imhist' is much more compatible with matlab and among other changes, |
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212 it now uses the whole range of the class for the histogram rather than |
618 | 213 the minimum and maximum of the input image and displays a colorbar under |
214 the histogram. | |
564
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215 |
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216 ** `isbw' now defines a black-and-white image as a binary non-sparse |
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217 matrix. This is compatible with matlab. To use the old behaviour, |
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218 use the new option for the call "isbw (img, "non-logical"). |
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219 For backwards compatibility, if a non-logical matrix of 0 and 1 is |
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220 used as input, `isbw' will still return true but a warning will be |
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221 issued since this will deprecated later. |
512 | 222 |
612 | 223 ** `isgray' now also returns true for matrices of the int16 class. |
224 | |
512 | 225 ** `isrgb' now returns false for logical matrix. |
562 | 226 |
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227 ** `tiff_tag_read' had several bug fixes and can now check IFDs beyond |
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228 the first. It can also accept mutiple tag values and IFDs simultaneously |
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229 and return a matrix of the values found. Its documentation has been |
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230 expanded (as well as an explanation of TIFF structure on the source) |
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231 |
629 | 232 ** For sake of matlab compatibility, the behaviour of `mat2gray' has been |
233 greatly changed. Among the changes, it will no longer swap the minimum and | |
234 maximum options if the first is larger than the later. Instead, will return | |
235 the image complement after truncation. Also, when the maximum and minimum | |
236 values are equal, `mat2gray' will truncate all values between 0 and 1. See | |
237 the help text (or source) for a detailed description of cautions. | |
238 | |
661 | 239 ** `bwfill' was fixed to always returns a logical matrix. |
240 | |
650 | 241 ** `imnoise' has been expanded to accept images of differente classes instead |
242 of only double and single. | |
243 | |
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244 ** The private function `__bwdist` has been renamed `__bwdist__` |
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245 |
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246 ** Package is now dependent on GNU Octave version 3.6.0 or later. |
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247 |
661 | 248 ** Package is now dependent on the signal package version 1.2.0 or later. |
626
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249 |
562 | 250 ** Package is no longer automatically loaded. |
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251 |
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252 |
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253 ******************************************************************************** |
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254 ** ** |
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255 ** NEWS below this point were written after their releases for history ** |
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256 ** purposes and extracted from the Octave Forge general NEWS. Previous to ** |
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257 ** the image package version 1.0.11, all Octave Forge packages would be ** |
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258 ** released at the same time. Previous to the package version 1.0.0 there ** |
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259 ** were monolithic releases with no actual packages. This means that some ** |
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260 ** releases actually had no changes in the image package itself or changes ** |
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261 ** were small compared to the whole Octave Forge project and so, not ** |
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262 ** mentioned on the NEWS file. Inspection of the actual log in the ** |
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263 ** repository should be used if exact details are required. ** |
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264 ** ** |
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265 ******************************************************************************** |
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266 |
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267 Summary of important user-visible changes for image 1.0.15 (2011/09/21): |
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268 -------------------------------------------------------------------------- |
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269 |
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270 Summary of important user-visible changes for image 1.0.14 (2011/04/12): |
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271 -------------------------------------------------------------------------- |
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272 |
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273 Summary of important user-visible changes for image 1.0.13 (2010/05/22): |
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274 -------------------------------------------------------------------------- |
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275 |
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276 Summary of important user-visible changes for image 1.0.12 (2010/03/22): |
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277 -------------------------------------------------------------------------- |
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278 |
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279 Summary of important user-visible changes for image 1.0.11 (2010/03/05): |
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280 -------------------------------------------------------------------------- |
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281 |
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282 Summary of important user-visible changes for image 1.0.10 (2009/06/07): |
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283 -------------------------------------------------------------------------- |
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284 |
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285 Summary of important user-visible changes for image 1.0.9 (2009/05/08): |
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286 ------------------------------------------------------------------------- |
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287 |
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288 ** The following functions are new: |
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289 |
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290 entropyfilt ordfiltn rangefilt stdfilt |
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291 |
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292 ** The following functions have been removed as they are now part of |
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293 Octave core: |
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294 |
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295 imread imwrite |
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296 |
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297 Summary of important user-visible changes for image 1.0.8 (2008/08/31): |
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298 ------------------------------------------------------------------------- |
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299 |
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300 ** Fix build issues with the last release. |
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301 |
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302 Summary of important user-visible changes for image 1.0.7 (2008/08/24): |
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303 ------------------------------------------------------------------------- |
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304 |
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305 Summary of important user-visible changes for image 1.0.6 (2008/04/29): |
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306 ------------------------------------------------------------------------- |
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307 |
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308 ** The following functions are new: |
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309 |
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310 imcomplement rgbplot |
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311 |
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312 ** Implemented support for bilateral filtering. |
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313 |
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314 ** Build fixes for new versions of ImageMagick. |
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315 |
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316 Summary of important user-visible changes for image 1.0.5 (2008/02/16): |
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317 ------------------------------------------------------------------------- |
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318 |
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319 ** The following functions are new: |
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320 |
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321 imfilter imsmooth |
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322 |
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323 Summary of important user-visible changes for image 1.0.4 (2007/12/12): |
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324 ------------------------------------------------------------------------- |
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325 |
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326 Summary of important user-visible changes for image 1.0.3 (2007/10/14): |
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327 ------------------------------------------------------------------------- |
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328 |
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329 Summary of important user-visible changes for image 1.0.2 (2007/07/26): |
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330 ------------------------------------------------------------------------- |
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331 |
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332 Summary of important user-visible changes for image 1.0.1 (2007/05/26): |
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333 ------------------------------------------------------------------------- |
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334 |
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335 Summary of important user-visible changes for image 1.0.0 (2007/03/28): |
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336 ------------------------------------------------------------------------- |
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337 |
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338 ** First non-monolithic release. |
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339 |
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340 ** The following functions are new: |
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341 |
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342 __bwarea fspecial impersepectivewap |
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343 apply graythresh imremap |
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344 bwarea im2double label2rgb |
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345 bwperim im2uint8 __magick_read__ |
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346 deriche im2uint16 |
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347 |
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348 ** Fixex for non 8bit images. |
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349 |
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350 ** Quantum sizes in imagemagick. |
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351 |
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352 ** Compatiability changes to imwrite, isgray and rgb2gray. |
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353 |
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354 ** imread, probe depth from bits rather than Red field, allows loading of gray |
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355 scale images. |
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356 |
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357 ** Convert all functions to use texinfo help. |
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358 |
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359 Summary of important user-visible changes for image (Octave Forge 2006.07.09): |
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360 -------------------------------------------------------------------------------- |
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361 |
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362 Summary of important user-visible changes for image (Octave Forge 2006.03.17): |
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363 -------------------------------------------------------------------------------- |
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364 |
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365 Summary of important user-visible changes for image (Octave Forge 2006.01.28): |
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366 -------------------------------------------------------------------------------- |
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367 |
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368 ** imread() now return the appropriate numeric class. Colour images are of size |
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369 MxNx3, gray images MxN. |
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370 |
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371 Summary of important user-visible changes for image (Octave Forge 2005.06.13): |
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372 -------------------------------------------------------------------------------- |
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373 |
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374 ** The following functions are new: |
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375 |
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376 bwarea imresize |
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377 |
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378 Summary of important user-visible changes for image (Octave Forge 2004.11.16): |
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379 -------------------------------------------------------------------------------- |
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380 |
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381 ** No important changes to the image package in this Octave Forge release. |
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382 |
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383 Summary of important user-visible changes for image (Octave Forge 2004.09.09): |
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384 -------------------------------------------------------------------------------- |
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385 |
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386 ** The following functions are new: |
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387 |
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388 applylut cmunique houghtf poly2mask uintlut |
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389 bestblk col2im im2col qtdecomp |
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390 blkproc conndef isrgb qtgetblk |
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391 bweuler dilate makelut qtsetblk |
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392 bwmorph erode nlfilter roicolor |
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393 cmpermute graycomatrix padarray stretchlim |
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394 |
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395 ** Implemented initial support for int* types. |
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396 |
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397 Summary of important user-visible changes for image (Octave Forge 2004.07.07): |
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398 -------------------------------------------------------------------------------- |
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399 |
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400 ** No important changes to the image package in this Octave Forge release. |
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401 |
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402 Summary of important user-visible changes for image (Octave Forge 2004.02.12): |
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403 -------------------------------------------------------------------------------- |
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404 |
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405 ** `imread' now supports 16-bit grayscale images. |
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406 |
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407 Summary of important user-visible changes for image (Octave Forge 2003.06.02): |
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408 -------------------------------------------------------------------------------- |
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409 |
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410 ** The following functions are new: |
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411 |
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412 rotate_scale |
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413 |
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414 Summary of important user-visible changes for image (Octave Forge 2003.02.22): |
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415 -------------------------------------------------------------------------------- |
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416 |
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417 ** No important changes to the image package in this Octave Forge release. |
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418 |
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419 Summary of important user-visible changes for image (Octave Forge 2002.11.30): |
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420 -------------------------------------------------------------------------------- |
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421 |
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422 ** The following functions are new: |
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423 |
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424 colfilt imginfo imrotate imshear imtranslate |
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425 |
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426 ** The `colorgradient' function now allow instantaneous transitions (weight 0) |
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427 |
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428 ** The `bwlabel' function has been implemented in C++ and may behave different. |
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429 |
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430 Summary of important user-visible changes for image (Octave Forge 2002.05.09): |
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431 -------------------------------------------------------------------------------- |
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432 |
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433 Summary of important user-visible changes for image (Octave Forge 2002.04.20): |
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434 -------------------------------------------------------------------------------- |
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435 |
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436 Summary of important user-visible changes for image (Octave Forge 2002.03.10): |
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437 -------------------------------------------------------------------------------- |
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438 |
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439 Summary of important user-visible changes for image (Octave Forge 2001.11.02): |
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440 -------------------------------------------------------------------------------- |
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441 |
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442 ** First release. |
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443 |