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How to find row and column of a pixel in an Image?

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Karan Ratnaparkhi
Karan Ratnaparkhi 2011-3-21
评论： Image Analyst 2016-4-23
Guys I want to find the rows and columns of pixels of image so that i can put that in if condition inside for loop. Bt i am unable to write that code. plz help me.
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Radha r
Radha r 2016-4-23
how do find image row and coloumn pixel in matrix in train image because i would geetting the good and bad pixel find out
Image Analyst
Image Analyst 2016-4-23
Radha r, Start your own question and post your image and explain what "good" and "bad" means to you.

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采纳的回答

Wolfgang Schwanghart
Hi, what about this:
[ROWS,COLUMNS] = ndgrid(1:size(I,1),1:size(I,2));
ROWS = ROWS(:);
COLUMNS = COLUMNS(:);
where I is your image.
Best regards, Wolfgang

更多回答（3 个）

Karan Ratnaparkhi
Karan Ratnaparkhi 2011-3-21
Hi wolfgang I have an algorithm in which i am given a range of rows n columns lets say a to b (for rows) and c to d (for columns). now I hav to do operation only on those pixels which lie (whose rows n cols lie) in between a to b and c to d. Thats y i want to know how to get the row and column of given pixel (not the value of pixel.) Plz help me with this code.
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Wolfgang Schwanghart
Wolfgang Schwanghart 2011-3-21
This sounds to me as if you want to perform some calculations within a subset of your image. Without knowing what exactly you want to do there, I suggest to take a look at the roi-based image processing section of the documentation.
http://www.mathworks.com/help/toolbox/images/ref/roifilt2.html
HTH, Wolfgang

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Syed Ali Hassan
Syed Ali Hassan 2014-2-22
Check this [row_limit,col_limit]=size(img);
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Radha r
Radha r 2016-4-23
it is not find the t my answer and what are you telling me i ont now please tell me example

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Radha r
Radha r 2016-4-23
it is not find the t my answer and what are you telling me i ont now please tell me example
  1 个评论
Image Analyst
Image Analyst 2016-4-23
Radha r, Start your own question and post your image and explain what "good" and "bad" means to you.

请先登录，再进行评论。

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