histogram from binary image

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Viviana
Viviana 2022년 11월 1일
댓글: KALYAN ACHARJYA 2022년 11월 4일
Hi, I'am calculating the histogram from a binary image, I am using the following code, but my histogram is empty, besides the grayscale turns out a proper histogram. Can you kindly help me? Thanks a lot.
I = imread('test.png');
figure;
[ counts , binLocations ] = imhist(I,2);
figure;
imhist(I);

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KALYAN ACHARJYA
KALYAN ACHARJYA 2022년 11월 1일
편집: KALYAN ACHARJYA 2022년 11월 1일
What does histogram mean: it counts the number of pixels as per pixel values. Binary number has only 0 and 1 pixel, lets have example there can be 500 zero pixels and 200 one pixels. If we draw the histogram plot, the hist blue (default) line bar plot may on the axis itself, please look carefully.
Or
You can use the histogram function, you can do many ways to change the color or width of the hist plot, so that it is easily visualized.
I=imbinarize(rgb2gray(imread('1.jpg')));
[counts,binLocations]=imhist(I,2);
figure, histogram(I);
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KALYAN ACHARJYA
KALYAN ACHARJYA 2022년 11월 4일
Welcome to Matlab World!

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