Accumulate Squared

Detailed Description

Accumulates a squared value from an input image to an output image. The accumulation image dimensions should be the same as the dimensions of the input image.

Accumulate squares is computed by:

\[ accum(x,y) = saturate_{int16} ( (uint16) accum(x,y) + (((uint16)(input(x,y)^2)) >> (shift)) ) \]

Where \( 0 \le shift \le 15 \)

The overflow policy used is VX_CONVERT_POLICY_SATURATE.

Functions
vx_node VX_API_CALL	vxAccumulateSquareImageNode (vx_graph graph, vx_image input, vx_scalar shift, vx_image accum)
	[Graph] Creates an accumulate square node. More...
vx_status VX_API_CALL	vxuAccumulateSquareImage (vx_context context, vx_image input, vx_scalar shift, vx_image accum)
	[Immediate] Computes a squared accumulation. More...

Function Documentation

vx_node VX_API_CALL vxAccumulateSquareImageNode	(	vx_graph	graph,
		vx_image	input,
		vx_scalar	shift,
		vx_image	accum
	)

[Graph] Creates an accumulate square node.

Parameters

[in]	graph	The reference to the graph.
[in]	input	The input VX_DF_IMAGE_U8 image.
[in]	shift	The input VX_TYPE_UINT32 with a value in the range of \( 0 \le shift \le 15 \).
[in,out]	accum	The accumulation image in VX_DF_IMAGE_S16, which must have the same dimensions 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 vxuAccumulateSquareImage	(	vx_context	context,
		vx_image	input,
		vx_scalar	shift,
		vx_image	accum
	)

[Immediate] Computes a squared accumulation.

Parameters

[in]	context	The reference to the overall context.
[in]	input	The input VX_DF_IMAGE_U8 image.
[in]	shift	A VX_TYPE_UINT32 type, the input value with the range \( 0 \le shift \le 15 \).
[in,out]	accum	The accumulation image in VX_DF_IMAGE_S16

Returns

A vx_status_e enumeration.

Return values

VX_SUCCESS	Success
*	An error occurred. See vx_status_e.