RTL Implementation of White Balance Algorithm Based on ZYNQ
In view of the common automatic white balance algorithm complexity is too high and the characteristics of the hardware to realize real-time. This paper combines gray world model and the advantage of white point detection algorithm, an adaptive control process is used to calculate gain coefficient and to picture the three-component white balance correction. On this basis to realize the automatic white balance based on the zynq RTL implementation of the algorithm. Compared with the traditional method, the cost of hardware is reduced, and the efficiency and flexibility of the algorithm are improved. Experimental results show that the algorithm can run smoothly and realize accurate correction of off-color images.
JarnoNikkanen,Tampere(FI).Image Processing Device with Au-tomatic White Balance [ P] .US:2009/0295938, 2006-08 -28.
Ramanath R,Drew M S. von Kries Hypothesis[J]. Computer Vision,2014:874-875.
Aoide N. Low-voltage Differential Signaling[M]. Soph Press, 2013.
Silva V D,Chesnokov V,Larkin D.A Novel Adaptive Shading Correction Algorithm for Camera Systems[J]. Electronic Imaging,2016,2016(18):1-5.
Lu peilong, fu yide. Design and implementation of image preprocessing algorithm on ZYNQ chip [J]. Computer and digital engineering,2015(6):1118-1120.
Yin weiwei. Image color deviation detection method based on YCbCr color space [J]. Computer era,2017(9):47-50.
Jin huangbin, qin xing, guo binlin. Automatic white balance algorithm based on grayscale world and white point detection[J]. Electronic devices 2011.04.
BarnardK.Practical Color Constancy[ D] .PhD ThesisSimonFra-ser University,School of Computing, 1999.01.
Yang Z T,Ruan P,Zhai B.Auto-exposure Algorithm for Scenes with High Dynamic Range Based on Image Entropy[J]. Acta Photonica Sinica,2013,42(6):742-746.
Barnard K,Cardei V,Funt B. A comparison of computational color constancy algorithms.I: Methodology and experiments with synthesized data[M]. IEEE Press,2002.
Lam EY.Combining gray world and retinex theory for automatic white balance in digital photography[C]International Symposium on Consumer Electronics.IEEE, 2005.
Gasparini F,Schettini R. Color balancing of digital photos using simple image statistics[J]. Pattern Recognition,2004,37(6):1201-1217.
Weng C C,Chen H,Fuh C S. A novel automatic white balance method for digital still Cameras [C] IEEE International Symposium on Circuits and Systems. IEEE Xplore,2006.
- There are currently no refbacks.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.