Foveated Color Correction to Improve Color Uniformity of Head-Mounted Displays [MSFT Patent]
FOVEATED COLOR CORRECTION TO IMPROVE COLOR UNIFORMITY OF HEAD-MOUNTED DISPLAYS
Date Submitted: August 22, 2018
Date Published: February 27, 2020
Patent Application No: 20200064631
Inventors: ROBBINS; Steven John; (Redmond, WA) ; AHOLT; Christopher Charles; (Newcastle, WA) ; JUENGER; Andrew Kilgour; (Woodinville, WA) ; CIRUCCI; Nicholas Mark; (Enfield, CT)
Abstract
A color correction mask programmatically generated in software on an HMD device is applied to a gaze region on a display field of view (FOV) on a head-mounted display (HMD) device to optimize system resources while rendering a display. Eye monitoring sensors are utilized to track movement of a user's eyes while the user operates the HMD device to determine a gaze position of the user's eyes on the display FOV. Using the determined gaze position, a dynamic foveal gaze region is sized around the gaze position so that the foveal portion of the display FOV is color-corrected, that is, color non-uniformities are reduced or eliminated. In other implementations, a gaze-based weighting mode is implemented in which measurements of the user's full eye or eye orbit are utilized to color correct a larger surface area of the display FOV relative to the foveal color correction mode.
Detailed Description
0037] System 100 may include one or more imagers (representatively indicated by reference numeral 105) that work with an optical system 110 to deliver images as a virtual display to a user's eye 115. The imager 105 may include, for example, RGB (red, green, blue) light emitting diodes (LEDs), LCOS (liquid crystal on silicon) devices, OLED (organic light emitting diode) arrays, MEMS (micro-electro mechanical system) devices, or any other suitable displays or micro-displays operating in transmission, reflection, or emission. The imager 105 may also include mirrors and other components that enable a virtual display to be composed and provide one or more input optical beams to the optical system. The optical system 110 can typically include magnifying optics 120, pupil forming optics 125, and one or more waveguides 130. The imager 105 may include or incorporate an illumination unit and/or light engine (not shown) that may be configured to provide illumination in a range of wavelengths and intensities in some implementations.
Link to patent:
I thought this patent was worthy of discussion, especially since Hololens 2 and the image quality have been under siege recently.
edit: remade this thread because of typos in the title. argh
Posted Mar 5, 2020, 5:14 PM UTC · edited