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how to find pixel value of an image

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vasantha malairamar
回答： Aaron Charles Alday 2020-2-16
imread('a.jpg');
[r c]=size(A);pixel
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Adam
Adam 2017-3-27
Your question is not clear, mostly because you just wrote 2 lines of code without any question apart from the very vague title.

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回答（4 个）

aaru sri
aaru sri 2019-2-7
how to make a one pixel change in it
KSSV
KSSV 2017-3-27
% Gray Image
I = imread('your image') ;
level = I(r, c);
% RGB image
I = imread('your image') ;
rgb = impixel(I,r,c) ;
  2 个评论
vasantha malairamar
vasantha malairamar 2017-3-27
Undefined function or variable 'c'.
Error in secure>pushbutton2_Callback (line 306) rg = impixel(I,r,c) ;
KSSV
KSSV 2017-3-27
r,c should be indices which stand off row and column positions.

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Sushil Sharma
Sushil Sharma 2019-11-7
Dear vasantha malairamar
I just update your answer, if you need to know the rows and columns in your image:
Let's say you have an image which is
I = imread('abc.png') % your image
rgb = impixel(I,rows, columns) %impixel function
rgb = 107 107 107 % you will get the pixel value
Aaron Charles Alday
Hi! May I ask how to determine the pixel value of a grayscale picture?

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