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IMAGE Processing(matrix comparision)

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Muthuraj V
Muthuraj V 2011-12-16
关闭： MATLAB Answer Bot 2021-8-20
Hi All,
if i have two matrix to be compared, and i dont want perticular element to be compaered, how do i do that in matlab..??
for Ex
A=[1 8 8
7 6 *
9 9 9]
B=[3 5 6
5 6 5
9 0 9]
as u can see a '*' symbol in matrix a, so while comparing A and B i dont want to compare the element at the '*' postion in A, with the corrosponding B's element..
please help me in this regard,
Thank You in advance.
[EDITED: Code formatted, Jan Simon]
  2 个评论
Chandra Kurniawan
Chandra Kurniawan 2011-12-16
Actually, you cannot put '*' in numeric array.
You can use other array to define the position of '*'
Eq :
pos = [2 3];
Muthuraj V
Muthuraj V 2011-12-22
i think u dint get my question,,,,
i have put a '*' to indicate that it can be any value....
when checking for equality between two Matrix, i don't want to check the equality of a particular element in the matrix,
say for example i dont want to compare the element in the index or position(0,2) with other matrix, so how do i do this..??

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回答（1 个）

Jan
Jan 2011-12-16
What exactly does "compare" mean? It would be easier to create an answer, if this detail need not to be guessed.
Perhaps:
mask = logical([1, 1, 1; 1, 1, 0; 1, 1, 1]);
isequal(A(mask), B(mask))
  5 个评论
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Walter Roberson
Walter Roberson 2011-12-27
http://www.mathworks.com/help/techdoc/math/f1-85462.html#bq7egb6-1

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