US 12,470,724 B2
Fixed-size block compression techniques for RGB channels
Georgios Keramidas, Patras (GR); Ioannis Manthopoulos, Thessalonika (GR); Ioannis Blagas, Thessalonika (GR); Athanasia Lytra, Thessalonika (GR); Chrysa Kokkala, Patras (GR); and Iakovos Stamoulis, Patras (GR)
Assigned to Think Silicon Research and Technology Single Member S.A., Rion Achaias (GR)
Filed by Think Silicon Research and Technology Single Member S.A., Rion Achaias (GR)
Filed on Apr. 5, 2023, as Appl. No. 18/296,219.
Application 18/296,219 is a continuation of application No. PCT/GR2023/000009, filed on Mar. 28, 2023.
Prior Publication US 2024/0333933 A1, Oct. 3, 2024
Int. Cl. H04N 19/124 (2014.01); H04N 19/182 (2014.01); H04N 19/184 (2014.01); H04N 19/186 (2014.01)
CPC H04N 19/186 (2014.11) [H04N 19/124 (2014.11); H04N 19/182 (2014.11); H04N 19/184 (2014.11)] 19 Claims
OG exemplary drawing
 
1. A method for fixed size texture compression, comprising:
determining a first endpoint of a pixel block including four pixels, each pixel represented by a red channel, a green channel and a blue channel, wherein the first endpoint is a pixel of the pixel block;
determining a second endpoint of the pixel block, which is not the first endpoint, wherein the second endpoint is another pixel of the pixel block;
encoding the first endpoint and the second endpoint using a first plurality of bits;
encoding a first quantization level using a second plurality of bits;
encoding a second quantization level using a third plurality of bits;
encoding a location of the first endpoint and a location of the second endpoint using a fourth plurality of bits; and
encoding an addressing indicator bit based on a distance between a value of the first endpoint and a value of the second endpoint.