Scale X and Y separately in a matrix

19 Ansichten (letzte 30 Tage)
S
S am 16 Jul. 2019
Bearbeitet: Adam am 17 Jul. 2019
Hi,
I have a matrix of an image. I want to scale the x axis of the matrix by keeping y the same. (Like stretch the image only in X keeping Y the same). I'm thinking of using the aspect ratio (X/Y). But by multiplying the whole matrix by the aspect ratio doesn't give the result I want. Is there a way to do this.
Thanks
  2 Kommentare
Adam
Adam am 16 Jul. 2019
doc interp2
will allow you to change the sizes of x and y independently. Just use the same y grid for output as you did for input and choose your new x grid to be what you want.
Or just
doc imresize
should work, unless I am misunderstanding what result you are expecting.
S
S am 16 Jul. 2019
In doc imresize the whole image is stretched or srink, right? Can it be used to stretch only x axis and keep y axis the same. Could you please send me an example code.
Thank you very much

Melden Sie sich an, um zu kommentieren.

Antworten (1)

Adam
Adam am 17 Jul. 2019
Bearbeitet: Adam am 17 Jul. 2019
B = imresize(A,[numrows numcols])
is the second syntax given in the documentation. If you pass in a numrows the same as the current size of A then this will remain unchanged in B, while the number of columns can change independently of this.

Kategorien

Mehr zu Geometric Transformation and Image Registration finden Sie in Help Center und File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by