The OpenVX Specification  a73e458
Reconstruction from a Laplacian Image Pyramid

Detailed Description

Reconstructs the original image from a Laplacian Image Pyramid.

This vision function reconstructs the image of the highest possible resolution from a Laplacian pyramid. The input image is added to the last level of the Laplacian pyramid \(L_{n-2}\), the resulting image is upsampled to the resolution of the next pyramid level:

\[ I_{n-2} = upsample(input + L_{n-1}) \]

Correspondingly, for each pyramid level \(i\), except for the first \(i=0\) and the last \(i=n-1\):

\[ I_{i-1} = upsample(I_i + L_i) \]

Finally, the output image is [R00075]:

\[ output = I_0 + L_0 \]

Functions

vx_node VX_API_CALL vxLaplacianReconstructNode (vx_graph graph, vx_pyramid laplacian, vx_image input, vx_image output)
 [Graph] Reconstructs an image from a Laplacian Image pyramid. More...
 

Function Documentation

◆ vxLaplacianReconstructNode()

vx_node VX_API_CALL vxLaplacianReconstructNode ( vx_graph  graph,
vx_pyramid  laplacian,
vx_image  input,
vx_image  output 
)

[Graph] Reconstructs an image from a Laplacian Image pyramid.

Parameters
[in]graphThe reference to the graph [R00261].
[in]laplacianThe Laplacian pyramid with VX_DF_IMAGE_S16 format [R00262].
[in]inputThe lowest resolution image of type VX_DF_IMAGE_S16 for the Laplacian pyramid [R00263]
[out]outputThe output image of type VX_DF_IMAGE_U8 with the highest possible resolution reconstructed from the Laplacian pyramid [R00264].
See also
Object: Pyramid
Returns
vx_node [R00265].
Return values
0Node could not be created.
*Node handle.