MATLAB: How can i get RGB value if i have position(x,y)

if i have position of image(pixel) . How can i get RGB value of this position?

Best Answer

Note that row = y and is the first index, not the second index.

redValue = rgbImage(y, x, 1);
greenValue = rgbImage(y, x, 2);
blueValue = rgbImage(y, x, 3);

Related Solutions

MATLAB: If i assign 4 position(x,y) can i make a point and line to connect it together like freehand drawing

X = [x1 x2 x3 x4 x1];
Y = [y1 y2 y3 y4 y1];
plot(X,Y)
polyarea(X,Y)

MATLAB: Hello sir,i am new in matlab.By using imhist show an error

%I have tested it with a different image, No error

RGB=imread('1.jpg');
redvalue=RGB(:,:,1); 
greenvalue=RGB(:,:,2); 
bluevalue=RGB(:,:,3); 
sprintf('Value of the red,green and blue pixel is %d,%d,%d',redvalue,greenvalue,bluevalue);
figure, imshow(RGB),title('RGB IMAGE') 
I=rgb2gray(RGB);
figure,imshow(I),title('gray image') 
figure,imhist(I),title('histogram') 
T=80; 
it=im2bw(I,T/255); 
figure,imshow(it);

Here I have ignored the warning

Best Answer

Related Solutions

MATLAB: If i assign 4 position(x,y) can i make a point and line to connect it together like freehand drawing

MATLAB: Hello sir,i am new in matlab.By using imhist show an error

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