The OpenVX Specification  a73e458
Accumulate Weighted

Detailed Description

Accumulates a weighted value from an input image to an output image.

Weighted accumulation is computed by [R00009]:

\[ accum(x,y) = (1 - \alpha)*accum(x,y) + \alpha*input(x,y) \]

Where \( 0 \le \alpha \le 1 \) Conceptually, the rounding for this is defined as [R00010]:

\[ output(x,y)= uint8( (1 - \alpha) * float32( int32( output(x,y) ) ) + \alpha * float32( int32( input(x,y) ) ) ) \]

Functions

vx_node VX_API_CALL vxAccumulateWeightedImageNode (vx_graph graph, vx_image input, vx_scalar alpha, vx_image accum)
 [Graph] Creates a weighted accumulate node. More...
 

Function Documentation

◆ vxAccumulateWeightedImageNode()

vx_node VX_API_CALL vxAccumulateWeightedImageNode ( vx_graph  graph,
vx_image  input,
vx_scalar  alpha,
vx_image  accum 
)

[Graph] Creates a weighted accumulate node.

Parameters
[in]graphThe reference to the graph [R00270].
[in]inputThe input VX_DF_IMAGE_U8 image [R00271].
[in]alphaThe input VX_TYPE_FLOAT32 scalar value with a value in the range of \( 0.0 \le \alpha \le 1.0 \) [R00272].
[in,out]accumThe VX_DF_IMAGE_U8 accumulation image [R00273].
Returns
vx_node.
Return values
vx_nodeA node reference. Any possible errors preventing a successful creation should be checked using vxGetStatus