公开(公告)号：US20250097367A1

公开(公告)日：2025-03-20

申请号：US18370594

申请日：2023-09-20

Applicant: CISTA SYSTEM CORP.

Inventor： Hong ZHOU ,  Zhaojian LI

IPC: H04N1/60 ,  G06T5/00 ,  G06T5/20 ,  G06T7/13 ,  G06V10/56 ,  G06V10/60

Abstract: This application describes method and apparatus for color noise reduction to enhance the quality of color images. An example method first takes a color image as its input and converts it into a Luminance-Chrominance color space, resulting in an YUV image. This YUV representation consists of a Y-channel (Luminance information), which encapsulates the luminance information responsible for the image's brightness, and UV-channels, which represent the chrominance information responsible for the color information. Then a guided filter is created using the Y-channel of the YUV image. The guided filter acts as a reference and assists in refining the subsequent noise reduction steps. With the guided filter in place, the method performs color noise reduction in the UV-channels of the YUV image, where the color noise is primarily present, resulting in smoother and cleaner color values.