When a user in a dark room captures a selfie image or video using a front camera of a device, the display brightness can impact the captured image or video. Oscillations can occur due to a feedback loop between the image captured by the camera which when displayed on the device screen causes changes in display brightness. This disclosure describes techniques to automatically estimate the impact of display illumination on the face of a subject and slow down convergence. Per the techniques, exposure and/or white balance parameters for the camera are estimated using display illumination (brightness), depth (distance of the subject), and reflectance. Machine learning techniques or a lookup table or regression on historical data can be used for estimation. Oscillations in the captured image or video due to a feedback loop are reduced or eliminated.
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Navinprashath; Velarde, Ruben; Wu, Jerry; Ryu, Jay; and Malik, Gaurav, "Display Brightness Based Camera Parameter Control for Selfie Capture in Darkness", Technical Disclosure Commons, (August 14, 2023)