The OpenVX Specification  r28647
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Gaussian Filter

Detailed Description

Computes a Gaussian filter over a window of the input image.

This filter uses the following convolution matrix:

\[ \mathbf{K}_{gaussian} = \begin{vmatrix} 1 & 2 & 1\\ 2 & 4 & 2\\ 1 & 2 & 1 \end{vmatrix} * \frac{1}{16} \]

Functions

vx_node vxGaussian3x3Node (vx_graph graph, vx_image input, vx_image output)
 [Graph] Creates a Gaussian Filter Node. More...
 
vx_status vxuGaussian3x3 (vx_context context, vx_image input, vx_image output)
 [Immediate] Computes a gaussian filter on the image by a 3x3 window. More...
 

Function Documentation

vx_node vxGaussian3x3Node ( vx_graph  graph,
vx_image  input,
vx_image  output 
)

[Graph] Creates a Gaussian Filter Node.

Parameters
[in]graphThe reference to the graph.
[in]inputThe input image in VX_DF_IMAGE_U8 format.
[out]outputThe output image in VX_DF_IMAGE_U8 format.
Returns
vx_node.
Return values
0Node could not be created.
*Node handle.
vx_status vxuGaussian3x3 ( vx_context  context,
vx_image  input,
vx_image  output 
)

[Immediate] Computes a gaussian filter on the image by a 3x3 window.

Parameters
[in]contextThe reference to the overall context.
[in]inputThe input image in VX_DF_IMAGE_U8 format.
[out]outputThe output image in VX_DF_IMAGE_U8 format.
Returns
A vx_status_e enumeration.
Return values
VX_SUCCESSSuccess
*An error occurred. See vx_status_e.