Rotate the 'view' of images using imshow/imagesc

kees de Kapper — Thu, 08 Oct 2009 07:57:02 -0400

Hi all,

I've got an image (e.g. 100x200 pixels) and present the image using imshow or imagesc as landscape. How can I represent the image as portrait (thus rotated) without rotating the original image data?
I need to save memory, that's why I want to avoid creating new images due top imrotate every time.

Thanx in advance,

Kees

Re: Rotate the 'view' of images using imshow/imagesc

Image Analyst — Sun, 11 Oct 2009 14:59:03 -0400

"kees de Kapper" <kees_de_kapper@hotmail.com> wrote in message <hak60e$ctd$1@fred.mathworks.com>...
> Hi all,
>
> I've got an image (e.g. 100x200 pixels) and present the image using imshow or imagesc as landscape. How can I represent the image as portrait (thus rotated) without rotating the original image data?
> I need to save memory, that's why I want to avoid creating new images due top imrotate every time.
>
> Thanx in advance,
>
> Kees
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Wow, 100 x 200 and you're already constrained for memory? What are you running on? A cell phone?

I was going to suggest imresize but since you're already very very low on memory, I suggest you look at the DataAspectRatio property of the axes control.
Good luck (on getting a new computer).

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Rotate the 'view' of images using imshow/imagesc

Re: Rotate the 'view' of images using imshow/imagesc