System Maintenance:
There may be intermittent impact on performance while updates are in progress. We apologize for the inconvenience.
By Topic

Design and implementation of two key image processing techniques for CMOS image sensor based on fpga

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Yu Zhang ; ASIC Design Center, Tianjin Univ., Tianjin, China ; Su-ying Yao ; Na Zhang ; Jiang-tao Xu

Automatic white balance and color filter array interpolation are two important function of image signal processor for CMOS image sensor. This paper describes the designs and implementations of new automatic white balance method and color interpolation method on FPGA. This white balance method can effectively get the better of the defects of gray world and gray world-retinex methods by calculating the average deviation values of Cr and Cb. This color interpolation method can greatly reduce the artifacts causing by interpolating across edges with comparing the differences of neighboring pixels with the predefined thresholds. These two methods have been realized on Altera¿s FPGA EP1C12Q240C8. Experimental results show that the white balance method can obtain better image quality than gray world and gray world-retinex methods, and the color interpolation method can get high PSNR value. They can be good candidate for VLSI implementation.

Published in:

Solid-State and Integrated-Circuit Technology, 2008. ICSICT 2008. 9th International Conference on

Date of Conference:

20-23 Oct. 2008