lsst::afw::math::detail::gpu Namespace Reference

Classes
struct	SPoint2
	Simple 2D point (suitable for use on a GPU) More...
struct	SVec2
	Simple 2D vector (suitable for use on a GPU) More...
struct	SBox2I
	defines a 2D range of integer values begX <= x < endX, begY <= y < endY More...
struct	LinearInterp
struct	BilinearInterp
struct	PixelIVM
	defines a pixel having image, variance and mask planes More...
struct	ImageDataPtr
	defines memory region containing image data More...

Typedefs
typedef lsst::afw::image::VariancePixel	VarPixel
typedef lsst::afw::image::MaskPixel	MskPixel

Enumerations
enum	KernelType { KERNEL_TYPE_LANCZOS, KERNEL_TYPE_BILINEAR, KERNEL_TYPE_NEAREST_NEIGHBOR }

Functions
SVec2	VecAdd (SVec2 a, SVec2 b)
SVec2	VecSub (SVec2 a, SVec2 b)
SVec2	VecMul (SVec2 v, double m)
SPoint2	MovePoint (SPoint2 p, SVec2 v)
template<typename DestPixelT , typename SrcPixelT >
void	WarpImageGpuCallKernel (bool isMaskedImage, ImageDataPtr< DestPixelT > destImageGpu, ImageDataPtr< SrcPixelT > srcImageGpu, int mainKernelSize, KernelType maskKernelType, int maskKernelSize, SBox2I srcGoodBox, PixelIVM< DestPixelT > edgePixel, BilinearInterp *srcPosInterp, int interpLength)
	Calls the GPU kernel for lanczos resampling. More...

Variables
const int	maxGpuSfCount =100
int const	SIZE_X_WARPING_BLOCK =16
int const	SIZE_Y_WARPING_BLOCK =16
int const	SIZE_MAX_WARPING_KERNEL =100

Typedef Documentation

typedef lsst::afw::image::MaskPixel lsst::afw::math::detail::gpu::MskPixel

Definition at line 49 of file CudaLanczos.h.

typedef lsst::afw::image::VariancePixel lsst::afw::math::detail::gpu::VarPixel

Definition at line 48 of file CudaLanczos.h.

Enumeration Type Documentation

enum lsst::afw::math::detail::gpu::KernelType

Enumerator
KERNEL_TYPE_LANCZOS
KERNEL_TYPE_BILINEAR
KERNEL_TYPE_NEAREST_NEIGHBOR

Definition at line 188 of file CudaLanczos.h.

{ KERNEL_TYPE_LANCZOS, KERNEL_TYPE_BILINEAR, KERNEL_TYPE_NEAREST_NEIGHBOR };

Function Documentation

SPoint2 lsst::afw::math::detail::gpu::MovePoint ( SPoint2  p, SVec2  v  )

inline

Definition at line 94 of file CudaLanczos.h.

{
    return SPoint2(p.x+v.x, p.y+v.y);
}

SVec2 lsst::afw::math::detail::gpu::VecAdd ( SVec2  a, SVec2  b  )

inline

Definition at line 82 of file CudaLanczos.h.

{
    return SVec2(a.x+b.x, a.y+b.y);
}

SVec2 lsst::afw::math::detail::gpu::VecMul ( SVec2  v, double  m  )

inline

Definition at line 90 of file CudaLanczos.h.

{
    return SVec2(m*v.x, m*v.y);
}

SVec2 lsst::afw::math::detail::gpu::VecSub ( SVec2  a, SVec2  b  )

inline

Definition at line 86 of file CudaLanczos.h.

{
    return SVec2(a.x-b.x, a.y-b.y);
}

template<typename DestPixelT , typename SrcPixelT >

void lsst::afw::math::detail::gpu::WarpImageGpuCallKernel	(	bool	isMaskedImage,
		ImageDataPtr< DestPixelT >	destImageGpu,
		ImageDataPtr< SrcPixelT >	srcImageGpu,
		int	mainKernelSize,
		KernelType	maskKernelType,
		int	maskKernelSize,
		SBox2I	srcGoodBox,
		PixelIVM< DestPixelT >	edgePixel,
		BilinearInterp *	srcPosInterp,
		int	interpLength
	)

Calls the GPU kernel for lanczos resampling.

• isMaskedImage - if false, only the image plane is calculated, mask and variance planes are ignored
• destImageGpu - (output) defines memory region (on GPU) containing allocated buffer for output data
• srcImageGpu - defines memory region (on GPU) containing source image data
• srcGoodBox - valid source pixel centers ffor Lanczos kernels
• kernelCenterX, kernelCenterY - offset of Lanczos kernel center, in pixels
• edgePixel - set this for all dest. image output pixels mapped from outside of bounds of the source image
• srcPosInterp - a 2D array defining a piecewise bilinear interpolation of a coordinate transform function over input image. Each element defines coordinate transform of one part of the input image. The size of each part is defined by the interpLength parameter.
• interpLength - defines width and height of parts of the input image (for interpolation)

Variable Documentation

const int lsst::afw::math::detail::gpu::maxGpuSfCount =100

Definition at line 50 of file convCUDA.h.

int const lsst::afw::math::detail::gpu::SIZE_MAX_WARPING_KERNEL =100

Definition at line 53 of file CudaLanczos.h.

int const lsst::afw::math::detail::gpu::SIZE_X_WARPING_BLOCK =16

Definition at line 51 of file CudaLanczos.h.

int const lsst::afw::math::detail::gpu::SIZE_Y_WARPING_BLOCK =16

Definition at line 52 of file CudaLanczos.h.