US 12,067,674 B2
Image blending modes systems and methods
Yun Gong, Cupertino, CA (US); Jim C Chou, San Jose, CA (US); and Guy Cote, Aptos, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 21, 2022, as Appl. No. 17/934,138.
Prior Publication US 2024/0096010 A1, Mar. 21, 2024
Int. Cl. G06T 15/50 (2011.01); G06T 3/18 (2024.01)
CPC G06T 15/503 (2013.01) [G06T 3/18 (2024.01)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
an electronic display configured to display an image frame based on blended image data; and
image processing circuitry configured to generate the blended image data by combining first image data and second image data via a blend operation, wherein the blend operation comprises:
receiving graphics alpha data indicative of a transparency factor to be applied to the first image data to generate a first layer of the blend operation; and
overlaying the first layer onto a second layer, wherein the second layer is based on the second image data, and wherein overlaying the first layer onto the second layer comprises adding first pixel values of the first image data to second pixel values of the second image data to generate blended pixel values of the blended image data, wherein the first pixel values of the first image data are augmented by the transparency factor, and wherein the first pixel values comprise negative pixel values.