Image stripe noise active suppression method

• Main Authors: XU DIANGUO, BAI FENGQIANG, ZHANG XIANGJUN
• Format: Patent
• Language: Chinese; English
• Published: 05.05.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention discloses an image stripe noise active suppression method, belongs to the technical field of electromagnetic compatibility, and aims to solve the problems of an existing image stripe noise suppression method. The method comprises the following steps: S1, obtaining an image stripe noise data curve on a mobile device comprising an SMA-OIS actuator and a CMOS image sensor by adopting a sweep frequency algorithm and an image stripe noise evaluation algorithm, wherein the data curve is a relation curve between the PWM driving frequency of the SMA-OIS actuator and the image stripe noise; s2, taking the noise value A1 as a boundary, firstly filtering the corresponding frequency of which the noise value is greater than or equal to A1, and obtaining N sections of driving frequency ranges, N being greater than or equal to 1; secondly, filtering out a high-frequency band with the frequency greater than 30kHz, and retaining a low-frequency band; and finally, filtering out the frequency of which the frequenc