Transform: rotate, resize

Enumerations
enum	af_resize_t { AF_RSZ_Nearest = 0, AF_RSZ_Bilinear = 1 }
	Resize interpolation method. More...
Functions
array	rotate (const array &image, const float theta, bool iscrop=true)
	Image rotation.
array	resize (const array &image, float scale, af_resize_t type=AF_RSZ_Nearest)
	Resize an image uniformly.
array	resize (const array &image, float height, float width, af_resize_t type=AF_RSZ_Nearest)
	Resize an image.

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Enumeration Type Documentation

enum af_resize_t

Resize interpolation method.

Enumerator:

AF_RSZ_Nearest	Use value of nearest neighbor.
AF_RSZ_Bilinear	Linearly interpolate between four nearest neighbors.

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Function Documentation

array af::rotate	(	const array &	image,
		const float	theta,
		bool	iscrop = true
	)

Image rotation.

Parameters:

[in]	image
[in]	theta	clockwise rotation angle in radians.
[in]	iscrop	Use in-place rotation and crop outlying pixels (true, default), else enlarge image domain to fit rotation (false)

Returns:

rotated image (same size as input when crop=true)

Note:

rotations in increments of pi/2 are fast

Examples:

examples/image/image_demo.cpp.

array af::resize	(	const array &	image,
		float	scale,
		af_resize_t	type = AF_RSZ_Nearest
	)

Resize an image uniformly.

Parameters:

[in]	image
[in]	type	type of image interpolation (default AF_RSZ_Nearest, see af_resize_t)
[in]	scale	Scaled image size (e.g. "1.1" scales image up 10%). Height and width scaled uniformly.

Returns:

resized image

Examples:

examples/image/gfor_hist_demo.cpp, and examples/image/image_demo.cpp.

array af::resize	(	const array &	image,
		float	height,
		float	width,
		af_resize_t	type = AF_RSZ_Nearest
	)

Resize an image.

Parameters:

[in]	image
[in]	type	type of image interpolation (default AF_RSZ_Nearest, see af_resize_t)
[in]	height	output image height scale
[in]	width	output image width scale

Returns:

resized image