How to rotate image by less than one degree?

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How to rotate image by less than one degree?
Which free software can I use?

image-editing

Shumon Saha

Posted 2012-11-13T11:38:12.360

Reputation: 709

How to? Simply enter 0.5 (or what ever the angle you require) into the dialog. Which software? Most would have this feature I'd expect. – ChrisF – 2012-11-13T11:41:59.400

1The most known free image manipulation software should suffice: GIMP – Ярослав Рахматуллин – 2012-11-14T02:53:54.183

Answers

Rotating with fractional degrees isn't something special. If a program doesn't allow it, it's probably a UI design choice of the developer.

IrfanView, for example, supports fine rotation:

rotate dialog

IrfanView is freeware and it supports both automation (via command-line options) and batch processing.

efotinis

Posted 2012-11-13T11:38:12.360

Reputation: 3 524

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Since you are talking about an image I would suggest a rotation matrix. See here for an example: http://en.wikipedia.org/wiki/Rotation_%28mathematics%29#Two_dimensions You can use arbitrary values as angle argument.

BandGap

Posted 2012-11-13T11:38:12.360

Reputation: 99

1There's no indication in the question that the OP is coding a solution. Equally there's no indication that they're using some image processing software to do this either. – ChrisF – 2012-11-13T12:25:46.563