Generate a Sequence in MATLAB
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I have a 2d NxN image L. I need to convert it to a sequence of pixels L1={k1,k2,....kNxN} row wise
采纳的回答
Walter Roberson
2012-1-31
L1 = reshape(L.',1,[]).'
7 个评论
LOKESH
2012-1-31
Walter Roberson
2012-1-31
Now, the final .' could be left out.
Walter Roberson
2012-1-31
Urrr, I mean "Yes, the final .' could be left out"
LOKESH
2012-2-1
Walter Roberson
2012-2-1
Experiment with these steps:
L = magic(5)
t1 = L.'
t2 = t1(:)
t3 = t2.'
And see http://www.mathworks.com/help/techdoc/math/f1-85462.html#f1-85511
LOKESH
2012-2-4
Walter Roberson
2012-2-4
You are using M = 256. The only way to reshape in to a 1D row of pixels row-wise is if M = 1.
If you want to convert in to rows, then the number of rows you use, M, must be divide the number of elements in the matrix.
I notice that 21845, the number of elements in the matrix, is 257 x 85. 257 is, of course, one greater than 256. Please check your code for an off-by-one error.
Also, please be careful about whether you use M as the 2nd or 3rd parameter of the reshape(). Do you want M rows and however many columns that works out to, or do you want M columns and however many rows that works out to?
Anyhow, as your requirements have changed since your initial question, please post your new requirements.
更多回答（1 个）
Derek O'Connor
2012-1-31
L1 = L(:)'
2 个评论
Walter Roberson
2012-1-31
That would not take the sequence "row-wise"; it would take them column-wise.
Derek O'Connor
2012-1-31
Sorry, I hadn't noticed the "row-wise".
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