How to display pixel values on the image and label on the region I want?

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Atifah Samuri 2021-12-18

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https://ww2.mathworks.cn/matlabcentral/answers/1613700-how-to-display-pixel-values-on-the-image-and-label-on-the-region-i-want

评论： Image Analyst 2021-12-20

My project is want to enhance the hand vein image. The problem is I need to display some values on the vein. For example, pixel values, SNR and MSE. Below I attached the code to get the pixel values but I don't understand why the value have 3.

imshow 'hazirah.jpg';

pixel_values = impixel;

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Answer 1

Image Analyst 2021-12-18

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You have 3 values because it's a color image. Those are the red, green, and blue intensity values.

rgbImage = imread('hazirah.jpg');
imshow(rgbImage);
impixelinfo; % Mouse around and see values.
row = 1; % whatever you want.
collumn = 4; % whatever you want.
pixel_values = impixel(rgbImage, row, column);