Mercurial > hg > octave-image
annotate NEWS @ 818:355bd9c476d9
bwperim: rewrite to support N-dimensional images and connectivity.
* bwperim.m: rewrite the function in order to accept images with any number
of dimensions. Treat the connectivity argument as more standard (relying on
the new private make_conn function). Display image instead of returning its
value if nargout less than 1. Add tests.
* private/make_conn.m: new private function to be shared among functions
accepting a connectivity argument.
* NEWS: add bwperim to functions that have been changed.
author | Carnë Draug <carandraug@octave.org> |
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date | Tue, 29 Oct 2013 02:32:44 +0000 |
parents | 7779d96939c2 |
children | c97cf027877d |
rev | line source |
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1 Summary of important user-visible changes for image 2.2.0 (yyyy/mm/dd): |
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2 ------------------------------------------------------------------------- |
673 | 3 |
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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 |
802
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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 |
771
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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. |
771
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25 |
682 | 26 ** The following functions are new: |
27 | |
700
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28 checkerboard |
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29 cp2tform |
746 | 30 findbounds |
767 | 31 impixel |
746 | 32 imtransform |
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33 intlut |
700
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34 maketform |
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35 montage |
700
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36 strel |
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37 tformfwd |
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38 tforminv |
756 | 39 ycbcr2rgb |
682 | 40 |
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41 ** The following functions have been moved from the Octave Forge Image package |
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42 to GNU Octave core: |
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43 |
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44 cmpermute |
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45 cmunique |
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46 iscolormap |
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47 rgbplot |
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48 |
754 | 49 ** The following functions have been deprecated in the previous release |
50 of the Image package and have now been removed: | |
51 | |
52 blkproc bmpwrite dilate erode | |
753
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53 |
720 | 54 ** The following functions have been deprecated (see their help text |
55 for the recommended alternatives): | |
56 | |
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57 bwborder |
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58 impad |
720 | 59 imrotate_Fourier |
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60 uintlut |
720 | 61 |
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62 ** The function im2col has been completely rewritten for massive performace |
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63 increase (increases greater than 500X have been observed, with biggest |
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64 differences for smaller blocks and sliding option), and support of |
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65 N-dimensional blocks and images. |
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66 |
755 | 67 ** rgb2ycbcr was completely rewritten to accept images of other classes, and |
68 colormaps. A new argument was implemented to convert the RGB values | |
69 according to different standards. | |
70 | |
723 | 71 ** The use of non logical matrices to specify the neighborhood for the medfilt2 |
72 function has been deprecated. If using a vector to specify the size of the | |
73 neighborhood, the elements are no longer swapped. | |
74 | |
726
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75 ** For consistency with other functions that allow specification of padding |
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76 values, the function padarray now accepts the string "zeros" as a valid |
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77 option. |
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78 |
673 | 79 ** The plot produced by `imhist' is correctly scaled on the X axis so that the |
80 colorbar corresponds to the actual intensity of the stems; the given | |
81 colormarp is used on the colorbar for indexed images; and the stems no | |
681 | 82 longer display the markers at their top. The Y axis is also adjusted in case |
83 of peaks with high values that prevent a good overview of the histogram. | |
673 | 84 |
684
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85 ** The function `rgbplot' accepts a style option which alows for a composite |
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86 display of a colormap. |
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87 |
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88 ** The option to create poisson noise to an image has been added to `imnoise'. |
686
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89 |
695 | 90 ** With the addition of the strel class, the following functions are now able |
91 to handle strel objects: | |
92 | |
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93 imdilate |
695 | 94 imerode |
95 | |
718 | 96 ** The performance of `imresize()' has been greatly improved when using the |
97 nearest neighbor method for N or 1/N scale factors (e.g.: 2, 50, 1/4, 1/7). | |
98 | |
722
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99 ** The imperspectivewarp, imremap, imresize, and imrotate functions will now |
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100 accept any interpolation method from the interp2 function thus extending |
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101 the available methods to "spline" and "pchip". This in addition to the |
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102 "bilinear" and "bicubic" methods (same as "linear" and "cubic" respectively) |
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103 which are kept for matlab compatibility. For the same reason, the |
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104 "triangle" method (interpolation kernel) has also been added (which is the |
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105 same as "linear" method). |
718 | 106 |
736 | 107 ** Bug fixes on the concavity, intermodes, maxlikelihood, and minimum methods |
108 of graythresh. | |
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109 |
745 | 110 ** The `bwdist' function will now consider any non zero value as object pixels, |
111 the class of the distance matrix has changed to single, and indexes an | |
112 uint dependent on the matrix size. | |
113 | |
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114 ** The transform option of imtophat has been removed (it was deprecated |
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115 in version 2.0.0) in favour of using imbothat. |
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116 |
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117 ** Other functions that have been changed for smaller bugfixes, increased |
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118 Matlab compatibility, or performance: |
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119 |
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120 bwlabel |
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121 bwperim |
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122 padarray |
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123 |
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124 Summary of important user-visible changes for image 2.0.0 (2012/11/08): |
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125 ------------------------------------------------------------------------- |
504 | 126 |
127 ** The following functions are new: | |
128 | |
658 | 129 analyze75info imabsdiff iptcheckconn |
130 analyze75read imadd iptcheckmap | |
131 analyze75write imbothat iptchecknargin | |
132 blockproc imcrop iptcheckstrs | |
133 bwlabeln imdivide iptnum2ordinal | |
134 getrangefromclass imlincomb iscolormap | |
135 im2int16 immultiply normxcorr2 | |
136 im2single imsubtract wavelength2rgb | |
504 | 137 |
138 ** The following functions have been deprecated in previous releases | |
139 of the image package and have now been removed: | |
140 | |
141 imginfo | |
142 | |
665
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143 ** The function `deriche' has been removed. |
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144 |
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145 ** The complete set of functions to work with Analyze 7.5 files has been |
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146 implemented. See `analyze75info', `analyze75read' and `analyze75write'. |
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147 |
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148 ** `graythresh' can optionally accept an histogram rather than an image. This |
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149 allows for preprocessing of the histogram previous to an automatic threshold |
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150 selection. |
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151 |
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152 ** Otsu's method for automatic threshold selection (default for `graythresh') |
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153 has been completely rewritten and should perform faster. Now, it can also |
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154 return a second value representing the ``goodness'' of the computed |
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155 threshold value (within class variance). |
570
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156 |
623 | 157 ** Alternative algorithms for automatic threshold have been implemented in |
158 `graythresh' (thanks to Antti Niemistö for releasing HistThresh toolbox | |
159 http://www.cs.tut.fi/~ant/histthresh/ from where many were ported, under a | |
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160 GPL license). Currently, the following algorithms have been implemented |
623 | 161 (see graythresh for notes and references): |
162 | |
658 | 163 concavity MaxEntropy minimum Otsu |
164 intermeans MaxLikelihood MinError percentile | |
165 intermodes mean moments | |
623 | 166 |
504 | 167 ** The following functions have been deprecated (see their help text |
168 for the recommended alternatives): | |
169 | |
658 | 170 blkproc bmpwrite dilate erode |
504 | 171 |
172 ** With the new function `imbothat' the transform option of | |
173 `imtophat' has been deprecated. | |
174 | |
506
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175 ** The following functions have had been changed for bug fixes and/or |
504 | 176 improved matlab compatibility |
177 | |
658 | 178 bwarea imhist im2uint8 isind |
179 bweuler imnoise im2uint16 mat2gray | |
180 bwfill conndef isbw rgb2gray | |
181 cmpermute im2bw isgray | |
182 cmunique im2double isrgb | |
609
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183 |
615
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184 ** `bwarea' now supports all image classes and considers objects all non |
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185 zero pixels (not all pixels higher than zero). |
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186 |
609
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187 ** `rgb2gray' now also supports images of the class single and performs a |
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188 weighted conversion to keep the image luminance instead of a the mean |
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189 through each color. |
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190 |
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191 ** `im2bw' now supports input images of the int16 class and deals better with |
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192 RGB images since it uses `rgb2gray' internally (see changes to rgb2gray). |
616
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193 Threshold is performed on all values greater than value instead of greater |
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194 than or equal. |
613
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195 |
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196 ** `imhist' is much more compatible with matlab and among other changes, |
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197 it now uses the whole range of the class for the histogram rather than |
618 | 198 the minimum and maximum of the input image and displays a colorbar under |
199 the histogram. | |
564
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200 |
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201 ** `isbw' now defines a black-and-white image as a binary non-sparse |
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202 matrix. This is compatible with matlab. To use the old behaviour, |
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203 use the new option for the call "isbw (img, "non-logical"). |
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204 For backwards compatibility, if a non-logical matrix of 0 and 1 is |
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205 used as input, `isbw' will still return true but a warning will be |
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206 issued since this will deprecated later. |
512 | 207 |
612 | 208 ** `isgray' now also returns true for matrices of the int16 class. |
209 | |
512 | 210 ** `isrgb' now returns false for logical matrix. |
562 | 211 |
563
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212 ** `tiff_tag_read' had several bug fixes and can now check IFDs beyond |
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213 the first. It can also accept mutiple tag values and IFDs simultaneously |
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214 and return a matrix of the values found. Its documentation has been |
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215 expanded (as well as an explanation of TIFF structure on the source) |
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216 |
629 | 217 ** For sake of matlab compatibility, the behaviour of `mat2gray' has been |
218 greatly changed. Among the changes, it will no longer swap the minimum and | |
219 maximum options if the first is larger than the later. Instead, will return | |
220 the image complement after truncation. Also, when the maximum and minimum | |
221 values are equal, `mat2gray' will truncate all values between 0 and 1. See | |
222 the help text (or source) for a detailed description of cautions. | |
223 | |
661 | 224 ** `bwfill' was fixed to always returns a logical matrix. |
225 | |
650 | 226 ** `imnoise' has been expanded to accept images of differente classes instead |
227 of only double and single. | |
228 | |
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229 ** The private function `__bwdist` has been renamed `__bwdist__` |
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230 |
589
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231 ** Package is now dependent on GNU Octave version 3.6.0 or later. |
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232 |
661 | 233 ** Package is now dependent on the signal package version 1.2.0 or later. |
626
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234 |
562 | 235 ** Package is no longer automatically loaded. |
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236 |
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237 |
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238 ******************************************************************************** |
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239 ** ** |
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240 ** NEWS below this point were written after their releases for history ** |
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241 ** purposes and extracted from the Octave Forge general NEWS. Previous to ** |
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242 ** the image package version 1.0.11, all Octave Forge packages would be ** |
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243 ** released at the same time. Previous to the package version 1.0.0 there ** |
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244 ** were monolithic releases with no actual packages. This means that some ** |
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245 ** releases actually had no changes in the image package itself or changes ** |
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246 ** were small compared to the whole Octave Forge project and so, not ** |
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247 ** mentioned on the NEWS file. Inspection of the actual log in the ** |
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248 ** repository should be used if exact details are required. ** |
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249 ** ** |
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250 ******************************************************************************** |
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251 |
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252 Summary of important user-visible changes for image 1.0.15 (2011/09/21): |
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253 -------------------------------------------------------------------------- |
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254 |
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255 Summary of important user-visible changes for image 1.0.14 (2011/04/12): |
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256 -------------------------------------------------------------------------- |
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257 |
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258 Summary of important user-visible changes for image 1.0.13 (2010/05/22): |
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259 -------------------------------------------------------------------------- |
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260 |
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261 Summary of important user-visible changes for image 1.0.12 (2010/03/22): |
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262 -------------------------------------------------------------------------- |
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263 |
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264 Summary of important user-visible changes for image 1.0.11 (2010/03/05): |
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265 -------------------------------------------------------------------------- |
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266 |
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267 Summary of important user-visible changes for image 1.0.10 (2009/06/07): |
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268 -------------------------------------------------------------------------- |
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269 |
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270 Summary of important user-visible changes for image 1.0.9 (2009/05/08): |
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271 ------------------------------------------------------------------------- |
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272 |
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273 ** The following functions are new: |
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274 |
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275 entropyfilt ordfiltn rangefilt stdfilt |
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276 |
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277 ** The following functions have been removed as they are now part of |
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278 Octave core: |
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279 |
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280 imread imwrite |
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281 |
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282 Summary of important user-visible changes for image 1.0.8 (2008/08/31): |
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283 ------------------------------------------------------------------------- |
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284 |
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285 ** Fix build issues with the last release. |
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286 |
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287 Summary of important user-visible changes for image 1.0.7 (2008/08/24): |
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288 ------------------------------------------------------------------------- |
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289 |
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290 Summary of important user-visible changes for image 1.0.6 (2008/04/29): |
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291 ------------------------------------------------------------------------- |
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292 |
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293 ** The following functions are new: |
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294 |
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295 imcomplement rgbplot |
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296 |
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297 ** Implemented support for bilateral filtering. |
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298 |
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299 ** Build fixes for new versions of ImageMagick. |
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300 |
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301 Summary of important user-visible changes for image 1.0.5 (2008/02/16): |
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302 ------------------------------------------------------------------------- |
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303 |
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304 ** The following functions are new: |
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305 |
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306 imfilter imsmooth |
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307 |
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308 Summary of important user-visible changes for image 1.0.4 (2007/12/12): |
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309 ------------------------------------------------------------------------- |
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310 |
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311 Summary of important user-visible changes for image 1.0.3 (2007/10/14): |
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312 ------------------------------------------------------------------------- |
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313 |
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314 Summary of important user-visible changes for image 1.0.2 (2007/07/26): |
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315 ------------------------------------------------------------------------- |
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316 |
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317 Summary of important user-visible changes for image 1.0.1 (2007/05/26): |
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318 ------------------------------------------------------------------------- |
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319 |
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320 Summary of important user-visible changes for image 1.0.0 (2007/03/28): |
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321 ------------------------------------------------------------------------- |
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322 |
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323 ** First non-monolithic release. |
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324 |
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325 ** The following functions are new: |
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326 |
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327 __bwarea fspecial impersepectivewap |
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328 apply graythresh imremap |
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329 bwarea im2double label2rgb |
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330 bwperim im2uint8 __magick_read__ |
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331 deriche im2uint16 |
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332 |
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333 ** Fixex for non 8bit images. |
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334 |
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335 ** Quantum sizes in imagemagick. |
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336 |
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337 ** Compatiability changes to imwrite, isgray and rgb2gray. |
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338 |
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339 ** imread, probe depth from bits rather than Red field, allows loading of gray |
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340 scale images. |
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341 |
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342 ** Convert all functions to use texinfo help. |
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343 |
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344 Summary of important user-visible changes for image (Octave Forge 2006.07.09): |
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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 2006.03.17): |
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348 -------------------------------------------------------------------------------- |
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349 |
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350 Summary of important user-visible changes for image (Octave Forge 2006.01.28): |
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351 -------------------------------------------------------------------------------- |
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352 |
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353 ** imread() now return the appropriate numeric class. Colour images are of size |
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354 MxNx3, gray images MxN. |
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355 |
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356 Summary of important user-visible changes for image (Octave Forge 2005.06.13): |
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357 -------------------------------------------------------------------------------- |
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358 |
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359 ** The following functions are new: |
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360 |
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361 bwarea imresize |
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362 |
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363 Summary of important user-visible changes for image (Octave Forge 2004.11.16): |
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364 -------------------------------------------------------------------------------- |
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365 |
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366 ** No important changes to the image package in this Octave Forge release. |
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367 |
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368 Summary of important user-visible changes for image (Octave Forge 2004.09.09): |
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369 -------------------------------------------------------------------------------- |
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370 |
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371 ** The following functions are new: |
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372 |
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373 applylut cmunique houghtf poly2mask uintlut |
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374 bestblk col2im im2col qtdecomp |
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375 blkproc conndef isrgb qtgetblk |
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376 bweuler dilate makelut qtsetblk |
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377 bwmorph erode nlfilter roicolor |
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378 cmpermute graycomatrix padarray stretchlim |
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379 |
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380 ** Implemented initial support for int* types. |
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381 |
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382 Summary of important user-visible changes for image (Octave Forge 2004.07.07): |
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383 -------------------------------------------------------------------------------- |
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384 |
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385 ** No important changes to the image package in this Octave Forge release. |
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386 |
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387 Summary of important user-visible changes for image (Octave Forge 2004.02.12): |
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388 -------------------------------------------------------------------------------- |
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389 |
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390 ** `imread' now supports 16-bit grayscale images. |
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391 |
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392 Summary of important user-visible changes for image (Octave Forge 2003.06.02): |
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393 -------------------------------------------------------------------------------- |
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394 |
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395 ** The following functions are new: |
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396 |
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397 rotate_scale |
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398 |
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399 Summary of important user-visible changes for image (Octave Forge 2003.02.22): |
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400 -------------------------------------------------------------------------------- |
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401 |
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402 ** No important changes to the image package in this Octave Forge release. |
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403 |
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404 Summary of important user-visible changes for image (Octave Forge 2002.11.30): |
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405 -------------------------------------------------------------------------------- |
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406 |
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407 ** The following functions are new: |
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408 |
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409 colfilt imginfo imrotate imshear imtranslate |
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410 |
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411 ** The `colorgradient' function now allow instantaneous transitions (weight 0) |
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412 |
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413 ** The `bwlabel' function has been implemented in C++ and may behave different. |
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414 |
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415 Summary of important user-visible changes for image (Octave Forge 2002.05.09): |
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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 2002.04.20): |
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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 2002.03.10): |
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422 -------------------------------------------------------------------------------- |
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423 |
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424 Summary of important user-visible changes for image (Octave Forge 2001.11.02): |
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425 -------------------------------------------------------------------------------- |
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426 |
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427 ** First release. |
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428 |