Mercurial > forge
changeset 10919:c977c8c01e7e octave-forge
rgb2gray: we also support the class single
| author | carandraug |
|---|---|
| date | Mon, 24 Sep 2012 15:02:13 +0000 |
| parents | 1bf4349dc174 |
| children | c84b1998717b |
| files | main/image/inst/rgb2gray.m |
| diffstat | 1 files changed, 5 insertions(+), 4 deletions(-) [+] |
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--- a/main/image/inst/rgb2gray.m Mon Sep 24 14:57:19 2012 +0000 +++ b/main/image/inst/rgb2gray.m Mon Sep 24 15:02:13 2012 +0000 @@ -15,10 +15,11 @@ ## -*- texinfo -*- ## @deftypefn {Function File} @var{gray}= rgb2gray (@var{rgb}) -## Convert RGB image or colormap to a grayscale. +## Convert RGB image or colormap to grayscale. ## -## If the input is an RGB image, the conversion to a gray image -## is computed as the mean value of the color channels. +## If the input is an RGB image, the conversion to a gray image is computed as +## the mean value of the color channels. Supported classes are single, double, +## uint8 and uint16. ## ## If the input is a color map it is converted into the YIQ space ## of ntsc. The luminance value (Y) is taken to create a gray color map. @@ -36,7 +37,7 @@ gray = ntscmap (:, 1) * ones (1, 3); elseif (isimage (rgb) && ndims(rgb) == 3) switch(class(rgb)) - case "double" + case {"single", "double"} gray = mean(rgb,3); case "uint8" gray = uint8(mean(rgb,3));