The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 2015
Filed:
Mar. 28, 2012
Yong Wang, Beijing, CN;
Bin Huo, Wayland, MA (US);
Yimiao Zhao, Beijing, CN;
Jianrong Chen, Andover, MA (US);
Yong Wang, Beijing, CN;
Bin Huo, Wayland, MA (US);
Yimiao Zhao, Beijing, CN;
Jianrong Chen, Andover, MA (US);
ANALOG DEVICES, INC., Norwood, MA (US);
Abstract
A system and method provide for an adaptive median filter with edge protection and four line buffers to remove the impulse noise for a Bayer pattern image. The system and method separates the Bayer pattern image data into different channels by color and applies the adaptive median filter to remove the impulse noise on each channel. The adaptive median filter has five threshold values that may be modified to achieve different light condition response based on the detected noise level of the image. Thus, proper threshold values with better brightness response to the input pixels may be applied and impulse noise may be suppressed effectively, while preserving image details.