Title :
A VLSI Implementation of Barrel Distortion Correction for Wide-Angle Camera Images
Author :
Chen, Pei-Yin ; Huang, Chien-Chuan ; Shiau, Yeu-Horng ; Chen, Yao-Tung
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Cheng Kung Univ., Tainan
Abstract :
Wide-angle cameras are widely used in surveillance and medical imaging applications nowadays. Images captured by wide-angle lens suffer from barrel distortion which means that the outer regions of the image are compressed more than the inner one. A low-cost high-speed VLSI implementation for barrel distortion correction is presented in this brief. In our simulation, the proposed circuit can achieve 200 MHz with 45 K gate counts by using TSMC 0.18 mum technology. Compared with the previous distortion correction design, our circuit requires less hardware cost and achieves faster working speed.
Keywords :
VLSI; aberrations; data compression; image coding; image sensors; VLSI implementation; barrel distortion correction; frequency 200 MHz; image compression; size 0.18 mum; surveillance; wide-angle camera images; wide-angle lens; Biomedical imaging; Cameras; Circuit simulation; Costs; Hardware; Image coding; Lenses; Medical simulation; Surveillance; Very large scale integration; Barrel distortion correction; VLSI architecture; wide-angle;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2008.2010165