www.gusucode.com > graphics 案例源码程序 matlab代码 > graphics/LoadAndDisplayJPEGImageFileExample.m
%% Load and Display JPEG Image File % Load a JPEG image file of the Cat's Eye Nebula from the Hubble Space % Telescope (image courtesy NASA). Display the original image using its RGB % color values (left) as a subplot. % % Create a linked subplot (same size and scale) to display the transformed % intensity image as a heat map (right). % Copyright 2015 The MathWorks, Inc. figure ax(1) = subplot(1,2,1); rgb = imread('ngc6543a.jpg'); image(rgb) title('RGB image') ax(2) = subplot(1,2,2); im = mean(rgb,3); image(im) title('Intensity Heat Map') colormap(hot(256)) linkaxes(ax,'xy') axis(ax,'image')