Computes image histogram from the input image. More...

Functions
VPIStatus	vpiCreateHistogramEven (uint32_t backends, VPIImageFormat fmt, float start, float end, int32_t numBins, VPIPayload *payload)
	Creates payload for Image Histogram Even algorithm. More...

VPIStatus	vpiSubmitHistogram (VPIStream stream, uint32_t backend, VPIPayload payload, VPIImage input, VPIArray output, uint32_t flags)
	Computes the image histogram. More...

Detailed Description

Computes image histogram from the input image.

Function Documentation

VPIStatus vpiCreateHistogramEven	(	uint32_t	backends,
		VPIImageFormat	fmt,
		float	start,
		float	end,
		int32_t	numBins,
		VPIPayload *	payload
	)

Creates payload for Image Histogram Even algorithm.

It calculates the image histogram assuming uniform (even) bins.

Parameters

[in]	backends	VPI backends that are eligible to execute the algorithm. Currently only one backend is accepted.
[in]	fmt	Format of input image
[in]	start	Specifies the low end of the histogram range (inclusive).
[in]	end	Specifies the high end of the histogram range (exclusive).
[in]	numBins	Specifies the number of bins in the output array.
[out]	payload	Pointer to memory where the created payload handle will be written to.

VPIStatus vpiSubmitHistogram	(	VPIStream	stream,
		uint32_t	backend,
		VPIPayload	payload,
		VPIImage	input,
		VPIArray	output,
		uint32_t	flags
	)

Computes the image histogram.

Parameters

[in]	stream	The stream where the operation will be queued in.
[in]	backend	Backend that will execute the algorithm. Must be one of the backends specified during payload creation. If 0, VPI will select one of the eligible backends from the payload that accepts the given parameters, usually the fastest one.
[in]	payload	payload created with vpiCreateHistogramEven
[in]	input	Input image. Supported formats are: VPI_IMAGE_FORMAT_U8, VPI_IMAGE_FORMAT_U16.
[out]	output	Where the resulting image histogram will be written to. It must have been created with the desired number of bins.
[in]	flags	If this flags is set to VPI_ACCUMULATE_OUTPUT, the output will be not be cleared first. Otherwise set this flag to 0 by default to clear out the value in the output array.