Image Enchancement Functions

This section describes the functions that are used in the high-quality upsampling, or increasing the spatial resolution of the video stream (Haussecker-Nestares super-resolution algorithm).

• Algorithm Overview
  
• Point Spread Function
  
• Error Functions
  
• SRHNInit Alloc_PSF3x3, SRHNInitAlloc_PSF2x2
  Allocates memory and initializes the internal representation of the PSF table.
• SRHNFree_PSF3x3, SRHNFree_PSF2x2
  Deallocates the internal representation of the PSF table.
• SRHNCalcResidual_PSF3x3, SRHNCalcResidual_PSF2x2
  Computes residuals for the likelihood part of the target function or its gradient.
• SRHNUpdateGradient_PSF3x3, SRHNUpdateGradient_PSF2x2
  Updates the likelihood part of the gradient.

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