Equalize Histogram

Detailed Description

Equalizes the histogram of a grayscale image. The output image dimensions should be the same as the dimensions of the input image.

This kernel uses Histogram Equalization to modify the values of a grayscale image so that it will automatically have a standardized brightness and contrast.

Functions
vx_node VX_API_CALL	vxEqualizeHistNode (vx_graph graph, vx_image input, vx_image output)
	[Graph] Creates a Histogram Equalization node. More...
vx_status VX_API_CALL	vxuEqualizeHist (vx_context context, vx_image input, vx_image output)
	[Immediate] Equalizes the Histogram of a grayscale image. More...

Function Documentation

vx_node VX_API_CALL vxEqualizeHistNode	(	vx_graph	graph,
		vx_image	input,
		vx_image	output
	)

[Graph] Creates a Histogram Equalization node.

Parameters

[in]	graph	The reference to the graph.
[in]	input	The grayscale input image in VX_DF_IMAGE_U8.
[out]	output	The grayscale output image of type VX_DF_IMAGE_U8 with equalized brightness and contrast and same size as the input image.

Returns

vx_node.

Return values

vx_node

A node reference. Any possible errors preventing a successful creation should be checked using vxGetStatus

vx_status VX_API_CALL vxuEqualizeHist	(	vx_context	context,
		vx_image	input,
		vx_image	output
	)

[Immediate] Equalizes the Histogram of a grayscale image.

Parameters

[in]	context	The reference to the overall context.
[in]	input	The grayscale input image in VX_DF_IMAGE_U8
[out]	output	The grayscale output image of type VX_DF_IMAGE_U8 with equalized brightness and contrast.

Returns

A vx_status_e enumeration.

Return values

VX_SUCCESS	Success
*	An error occurred. See vx_status_e.