Gaussian Pyramid Generator

Creates a Gaussian pyramid from the input image. More...

Functions
VPIStatus	vpiSubmitGaussianPyramidGenerator (VPIStream stream, uint64_t backend, VPIImage input, VPIPyramid output, VPIBorderExtension border)
	Computes the Gaussian pyramid from the input image. More...

Detailed Description

Creates a Gaussian pyramid from the input image.

Refer to Gaussian Pyramid Generator for more details and usage examples.

Function Documentation

vpiSubmitGaussianPyramidGenerator()

VPIStatus vpiSubmitGaussianPyramidGenerator	(	VPIStream	stream,
		uint64_t	backend,
		VPIImage	input,
		VPIPyramid	output,
		VPIBorderExtension	border
	)

#include <vpi/algo/GaussianPyramid.h>

Computes the Gaussian pyramid from the input image.

Parameters

[in]	stream	The stream where the operation will be queued in. Must not be NULL. Stream must have enabled the backends that will execute the algorithm.
[in]	backend	VPI backend that will execute the algorithm. Valid values: VPI_BACKEND_CPU VPI_BACKEND_CUDA VPI_BACKEND_PVA
[in]	input	Input image that corresponds to the finer level of the pyramid. Processing is more efficient if input is wrapping the first level of the output pyramid. Must not be NULL. Image must have enabled the backends that will execute the algorithm. Supported image formats are: Format CPU CUDA PVA VPI_IMAGE_FORMAT_U8 * * * VPI_IMAGE_FORMAT_S8 * * * VPI_IMAGE_FORMAT_U16 * * * VPI_IMAGE_FORMAT_S16 * * * VPI_IMAGE_FORMAT_F32 * * VPI_IMAGE_FORMAT_Y8_ER * * * VPI_IMAGE_FORMAT_Y8 * * * VPI_IMAGE_FORMAT_Y16_ER * * * VPI_IMAGE_FORMAT_Y16 * * * VPI_IMAGE_FORMAT_RGB8p * * VPI_IMAGE_FORMAT_BGR8p * * VPI_IMAGE_FORMAT_RGBA8p * * VPI_IMAGE_FORMAT_BGRA8p * *
[out]	output	Where the resulting gaussian pyramid will be written to. It must have been created with the desired scale and number of levels. Must not be NULL. Must have scale == 0.5. Must have been created with the desired scale and number of levels. First level dimensions must match input image's. Pyramid format must match input's. Pyramid must have enabled the backends that will execute the algorithm. On PVA backend, every even pyramid level's {0, 2, 4, 6, 8} dimension must be at least 18x18 big and should not have (image_height % 8 == 1). On PVA backend, at most 10 levels supported.
[in]	border	Border extension. Valid values: Border CPU CUDA PVA VPI_BORDER_ZERO * * * VPI_BORDER_CLAMP * * VPI_BORDER_REFLECT * VPI_BORDER_MIRROR *

Return values

VPI_ERROR_INVALID_ARGUMENT	stream is NULL.
VPI_ERROR_INVALID_ARGUMENT	input or output are NULL.
VPI_ERROR_INVALID_ARGUMENT	output pyramid's scale or dimensions outside valid range.
VPI_ERROR_INVALID_ARGUMENT	input image and output pyramid's first level dimensions do not match.
VPI_ERROR_INVALID_ARGUMENT	border not supported.
VPI_ERROR_INVALID_ARGUMENT	backend is invalid or unknown.
VPI_ERROR_INVALID_ARGUMENT	input and output formats do not match.
VPI_ERROR_INVALID_IMAGE_FORMAT	input and output formats aren't not supported.
VPI_ERROR_NOT_IMPLEMENTED	Gaussian Pyramid Generator algorithm is not supported by given backend.
VPI_ERROR_INVALID_OPERATION	Backend hardware not available.
VPI_ERROR_INVALID_OPERATION	The needed backends aren't enabled in stream, input or output.
VPI_SUCCESS	Operation executed successfully.