US 12,192,652 B2
Method and apparatus for estimating a value in a table generated by a photosites matrix
Valentin Rebiere, Grenoble (FR); and Antoine Drouot, Paris (FR)
Assigned to STMicroelectronics France, Montrouge (FR)
Filed by STMicroelectronics France, Montrouge (FR)
Filed on Oct. 6, 2023, as Appl. No. 18/482,117.
Application 18/482,117 is a continuation of application No. 17/199,444, filed on Mar. 12, 2021, granted, now 11,818,476.
Claims priority of application No. 2002673 (FR), filed on Mar. 18, 2020.
Prior Publication US 2024/0048863 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 25/60 (2023.01); H04N 23/84 (2023.01); H04N 25/13 (2023.01); H04N 25/705 (2023.01)
CPC H04N 25/60 (2023.01) [H04N 23/843 (2023.01); H04N 25/13 (2023.01); H04N 25/705 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method for estimating a missing or incorrect value, the method comprising:
defining a kernel of a table of values comprising a value to be estimated and neighboring values, the table of values being generated by a photosite matrix, the kernel having a missing or incorrect value location surrounded by locations of values generated by photosites, the missing or incorrect value location being the value to be estimated;
determining a weight for each primary neighboring value of a same colorimetric component as that of the missing or incorrect value to be estimated;
calculating semi-gradients, based on differences between neighboring values of the table, each semi-gradient being associated with a given direction with respect to the location of the missing or incorrect value to be determined, the weight of each primary neighboring value being determined based on the semi-gradient associated with a direction defined between the location of each primary neighboring value and the location of the missing or incorrect value; and
estimating the value to be estimated based on the primary neighboring values and the weight associated with the primary neighboring values.