公开(公告)号：US12189727B2

公开(公告)日：2025-01-07

申请号：US17478237

申请日：2021-09-17

Applicant: OmniVision Technologies, Inc.

Inventor： Wenshou Chen ,  Guansong Liu ,  Boyd Fowler ,  Ramakrishna Kakarala ,  Yiyi Ren

IPC: G06F15/16 ,  G06F21/16 ,  G06F21/60 ,  G06T1/00 ,  H04L1/00 ,  G06F17/14

Abstract: A method and apparatus for embedding a digital watermark in image content that is not visible to the human eye is performed on single-sensor digital camera images (often called ‘raw’ images) from a pixel-array. The raw image is transformed to generate preprocessed image coefficients, a watermark message is encrypted using a first key; the encrypted watermark message is randomized using a second key to form a watermark; and the watermark is embedded in randomly selected preprocessed image coefficients.

公开(公告)号：US20230087541A1

公开(公告)日：2023-03-23

申请号：US17478237

申请日：2021-09-17

Applicant: OmniVision Technologies, Inc.

Inventor： Wenshou Chen ,  Guansong Liu ,  Boyd Fowler ,  Ramakrishna Kakarala ,  Yiyi Ren

IPC: G06F21/16 ,  G06T1/00 ,  G06F21/60 ,  H04L1/00

Abstract: A method and apparatus for embedding a digital watermark in image content that is not visible to the human eye is performed on single-sensor digital camera images (often called ‘raw’ images) from a pixel-array. The raw image is transformed to generate preprocessed image coefficients, a watermark message is encrypted using a first key; the encrypted watermark message is randomized using a second key to form a watermark; and the watermark is embedded in randomly selected preprocessed image coefficients.