The C++ interface for affine transformation. More...

array	transform (const array &image, const array &transform, const unsigned oh=0, const unsigned ow=0, const bool inverse=true)

Detailed Description

The C++ interface for affine transformation.

Affine transformations allow transformation of images using a transform matrix. The matrix represents the operation to be performed on the image. The transformation matrix is a 3x2 matrix consisting of a 2x2 rotation matrix R combined with a 1x2 translation matrix T.

Matrix Transform = | R | = | r00 r01 | | T | | r10 r11 | | t00 t01 |

The operations that can be represented using this matrix form include rotation, translation, scaling and skew among others.

For more on warp affine transforms, see: Warp Affine Transformations

Function Documentation

array af::transform	(	const array &	image,
		const array &	transform,
		const unsigned	oh = `0`,
		const unsigned	ow = `0`,
		const bool	inverse = `true`
	)

Parameters

[in]	image	input image
[in]	transform	affine transform matrix of size 3x2
[in]	oh	specify output height of image, if (`0`, default) then output height is equal to input height
[in]	ow	specify output width of image, if (`0`, default) then output width is equal to input width
[in]	inverse	forward transform (`false`) or inverse transform (`true`, default)

Returns: transformed image