AKVIS Retoucher reconstructs missing parts of a photo by using information from surrounding areas (we'll call them samples).
You can adjust the algorithm's parameters in the Settings Panel:
Sample Size (0-16) affects the size of sample fragments. At higher values of this parameter, more of the background's texture is preserved, but image detail appears coarser.
Original Image
Sample Size = 3
Sample Size = 14
Sample Number (1–50) affects the number of sample fragments taken from surrounding areas and used in reconstruction. They are chosen randomly. At higher values, more of the background's texture is reconstructed, but processing time increases.
Original Image
Selection
Sample Number = 1
Sample Number = 50
Search Radius (16-250) affects the size of the area used to search for sample fragments used in reconstruction. The higher the value, the longer reconstruction takes. If the radius is too large, sample fragments from remote areas of the image could be chosen, which would not be suitable in reconstruction.
Original Image
Selection
Search Radius = 30
Search Radius = 220
Smoothing Check Box. This mode reduces the transition between fragment edges. It's helpful if edges are similar in texture but not in color. If the check box is deactivated there is no alignment.
Original Image With Selection
'Smoothing' Check Box Deactivated
Reconstruction and Smoothing
Fast Processing Check Box. When this check box is activated, processing speed is increased by simplifying the original image. This is useful in most cases and allows you to quickly get a good result.
— Parameters