Image display
1 shows a binary map:
imshow (BW); BW binary data matrix bitmap.
Image matrix 0 representing black and 1 for white.
2 shows a gray scale image:
The first: imshow (I); I grayscale image data matrix
The second: imshow (I, [low, high]); I is a gray scale image data matrix, and a value less than the low set to all black, all greater than the low set to white. Plotted by the low level of gray intermediate the high value.
Comparison of two mapping results:
R & lt = imread ( ' asahi.jpg ' );% Original the I = rgb2gray (R & lt);% converted to grayscale Figure; the subplot ( 121 ); imshow (the I);% the subplot ( 121 ), a first row of two column mapping the subplot ( 122 ); imshow (the I, [ 20 is , 80 ]); %% the subplot ( 122 ), a second row of two columns of plotted
3 Index image display
imshow index image display, data matrix may be provided, and color images simultaneously mapping table
imshow(I,map);
FIG 4 shows RGB
imshow(RGB);
5 shows an image file
Imshow(‘filename’);
6 Add a color bar
Add colorbar function in the function display
Imread = R & lt ( ' asahi.jpg ' );% Original the I = rgb2gray (R & lt);% converted to grayscale Figure; the subplot ( 131 is ); imshow (R & lt); the colorbar the subplot ( 132 ); imshow (the I); the subplot% ( 121 ), a first row of two columns of plotted colorbar the subplot ( 133 ); imshow (the I, [ 20 is , 80 ]); %% the subplot ( 122 ), a second row of two columns of plotted colorbar
7 texture mapping
imshow (); can only display two-dimensional images, matlab provides a warp-dimensional image can be mapped onto a three-dimensional object.
[x, y, z] = sphere;% draw sphere, the x, y, z coordinate axis is set to the I = imread ( ' asahi.jpg ' ); Warp (X + . 1 , Y, Z + 2 , the I);% the center point ( 1 , 0 , 2 )
