US 12,094,378 B2
Head-mountable display (HMD) image and foveal region brightness computation
Joseph Nouri, Fort Collins, CO (US); and Kevin Smathers, Palo Alto, CA (US)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 18/005,348
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Jul. 17, 2020, PCT No. PCT/US2020/042465
§ 371(c)(1), (2) Date Jan. 12, 2023,
PCT Pub. No. WO2022/015319, PCT Pub. Date Jan. 20, 2022.
Prior Publication US 2023/0282139 A1, Sep. 7, 2023
Int. Cl. G09G 3/00 (2006.01); A61B 5/16 (2006.01); G06F 3/01 (2006.01)
CPC G09G 3/003 (2013.01) [A61B 5/163 (2017.08); G06F 3/013 (2013.01); G09G 2320/0666 (2013.01); G09G 2320/0686 (2013.01); G09G 2340/02 (2013.01); G09G 2340/0407 (2013.01); G09G 2354/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
downsampling, by a computing device, an image displayable at a head-mountable display (HMD) to an image pixel representative of the image;
computing, by the computing device, a luminance of the image pixel from a color value of the image pixel, to determine image brightness;
determining, by the computing device, a foveal region of the image from eye-tracking information of a user of the HMD;
downsampling, by the computing device, the foveal region of the image to a foveal pixel representative of the foveal region of the image; and
computing, by the computing device, a luminance of the foveal pixel from a color value of the foveal pixel, to determine foveal region brightness,
wherein the image is downsampled by mipmapping the image to a one pixel-by-one pixel mipmap as the image pixel, and
wherein the foveal region of the image is downsampled by mipmapping the image to a one pixel-by-one pixel mipmap as the foveal pixel.