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RGB = imread('saturn.png'); I = rgb2gray(RGB); h = [1 2 1; 0 0 0; -1 -2 -1]; I2 = filter2(h,I); imshow(I2,[]), colorbar

%载入图像 load trees %RGB转换为灰度图 I = ind2gray(X,map); imshow(I) %指定特定区域，并进行填充 I2 = roifill; imshow(I2)

%载入图像 RGB = imread('autumn.tif'); figure(1); imshow(RGB); %将真彩图转换为灰度图 I = rgb2gray(RGB); figure(2); imshow(I); %进行余弦变换 J = dct2(I); figure(3); imshow(log(abs(J)),[]); colormap(jet(64)); c

.. title:: MochiKit.Color - color abstraction with CSS3 support Name ==== MochiKit.Color - color abstraction with CSS3 support Synopsis ======== :: // RGB color expressions are supported

#!/bin/sh # the next line restarts using wish \ exec wish "$0" "$@" # tcolor -- # This script implements a simple color editor, where you can # create colors using either the RGB, HSB, or CYM color s

/* texture.c - by David Blythe, SGI */ /* texload is a simplistic routine for reading an SGI .rgb image file. */ #include #include #include #include "texload.h" t

/* texture.h - by David Blythe, SGI */ /* Simple SGI .rgb image file loader routine. */ unsigned * read_texture(char *name, int *width, int *height, int *components); extern void imgLoad(char *file

/* texture.c - by David Blythe, SGI */ /* read_texture is a simplistic routine for reading an SGI .rgb image file. */ #include #include #include #include

/* readtex.c */ /* * Read an SGI .rgb image file and generate a mipmap texture set. * Much of this code was borrowed from SGI's tk OpenGL toolkit. */ #include #include #inc

/* * Simple SGI .rgb (IRIS RGB) image file reader ripped off from * texture.c (written by David Blythe). See the SIGGRAPH '96 * Advanced OpenGL course notes. */ /* includes */ #include