Hello guys,
what is the best way to (or is it possible?) add a picture to imagesc? I have colour map in the top and the picture of the body and I would like add body picture over the colourmap as on bellow. Any ideas?
Best regards
MATLAB: Adding picture to imagesc
add imageimagesc
Related Solutions
You need to pass in a colormap, N-by-3 array with values between 0 and 1, to to the colormap() function, NOT an image. And you should probably also pass in a handles to the axes you want to apply it to, otherwise it will apply that colormap to every axes in the figure window, which is probably not what you want. So in short, you want:
myColorMap = hsv(256); % Create a colormap.
colormap(gca, myColorMap); % Now apply the colormap.
You can also pass the colormap directly into imshow() and skip calling the colormap() function if you want.
See this full demo and study it:
grayImage = imread('cameraman.tif');subplot(3, 1, 1);imshow(grayImage);axis('on', 'image');title('Original Image');subplot(3, 1, 2);% Create a colormap.myColorMap = hsv(256);% Display image with that colormap.
imshow(grayImage, 'Colormap', myColorMap);colorbar;axis('on', 'image');title('Overlay Image');% Or equivalently, using the colormap() function:
subplot(3, 1, 3);% Display image with no colormap.
imshow(grayImage);% Create a colormap.myColorMap = hsv(256);% Now apply the colormap. Pass in the axes or else it will apply the colormap
% to ALL images on the figure, which is probably not what you want.
colormap(gca, myColorMap);colorbar;axis('on', 'image');title('Overlay Image');
Now, if you already have a colormap, and you want to produce an RGB image, like to write to a file on disk rather than just pseudocoloring a displayed image, you want to call ind2rgb()
rgbImage = ind2rgb(grayImage, myColorMap);Use axis('on', 'image'). I fixed other problems too. Fixed code is below:
clc;clear all;close all;workspace; % Make sure the workspace panel is showing.
% Read in original RGB image.
rgbImage = imread('Table.jpg');subplot(2, 2, 1);imshow(rgbImage)axis('on', 'image');title('Original Image')% Convert to gray scale.
grayImage = rgb2gray(rgbImage);subplot(2, 2, 2);imshow(grayImage)axis('on', 'image');title('Grey Scale Image')% Get edges
Canny_img = edge(grayImage, 'Canny');subplot(2, 2, 3);imshow(Canny_img, [])axis('on', 'image');title('Edge Detected Image')% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'Outerposition', [0, 0.05, 1, 0.95]);
By the way, you don't need to do edge detection to "find" the table if that's all that you want to do. You can simply threshold.
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