skew

Skew an input image. More...

Functions
AFAPI array	skew (const array &in, const float skew0, const float skew1, const dim_t odim0=0, const dim_t odim1=0, const bool inverse=true, const interpType method=AF_INTERP_NEAREST)
	C++ Interface for skewing an image. More...
AFAPI af_err	af_skew (af_array *out, const af_array in, const float skew0, const float skew1, const dim_t odim0, const dim_t odim1, const af_interp_type method, const bool inverse)
	C Interface for skewing an image. More...

Detailed Description

Skew an input image.

Skew function skews the input array along dim0 by skew0 and along dim1 by skew1. The skew areguments are in radians. Skewing the data means the data remains parallel along 1 dimensions but the other dimensions gets moved along based on the angle. If both skew0 and skew1 are specified, then the data will be skewed along both directions.

Explicit output dimensions can be specified using odim0 and odim1.

All new values that do not map to a location of the input array are set to 0.

Skew is a special case of the af::transform function.

Function Documentation

af_skew()

AFAPI af_err af_skew	(	af_array *	out,
		const af_array	in,
		const float	skew0,
		const float	skew1,
		const dim_t	odim0,
		const dim_t	odim1,
		const af_interp_type	method,
		const bool	inverse
	)

C Interface for skewing an image.

Parameters

[out]	out	will contain the skewed image
[in]	in	is input image
[in]	skew0	is amount by which the first dimension is skewed
[in]	skew1	is amount by which the second dimension is skewed
[in]	odim0	is the first output dimension
[in]	odim1	is the second output dimension
[in]	inverse	if true applies inverse transform, if false applies forward transoform
[in]	method	is the interpolation type (Nearest by default)

Returns

AF_SUCCESS if the color transformation is successful, otherwise an appropriate error code is returned.

skew()

AFAPI array skew	(	const array &	in,
		const float	skew0,
		const float	skew1,
		const dim_t	odim0 = 0,
		const dim_t	odim1 = 0,
		const bool	inverse = true,
		const interpType	method = AF_INTERP_NEAREST
	)

C++ Interface for skewing an image.

Parameters

[in]	in	is input image
[in]	skew0	is amount by which the first dimension is skewed
[in]	skew1	is amount by which the second dimension is skewed
[in]	odim0	is the first output dimension
[in]	odim1	is the second output dimension
[in]	inverse	if true applies inverse transform, if false applies forward transoform
[in]	method	is the interpolation type (Nearest by default)

Returns

the skewed image