Title :
Combined digital zooming and digital effects system utilizing CCD signal characteristics
Author :
Paik, Joon Ki ; Park, Sung Wook ; Kim, Hyo Ju
Author_Institution :
Dept. of Electron. Eng., Chung-Ang Univ., Seoul, South Korea
Abstract :
An image processing system for digital zooming and digital effects is proposed. This system directly processes the CCD (charge coupled device) signal without separating it into luminance and chrominance signals, based on the characteristics of the color filter array in the CCD. By using the proposed color signal processing method, and efficient and high-quality digital zooming system is obtained. Various special effect functions are included in the system by adding simple controls for the addresses of the accompanied image buffers. The digital zooming can magnify the real-time dynamic images up to 4 times by 25 discrete steps. The digital effects unit achieves various visual effects by controlling the accompanied image buffers. To realize the proposed system, approximately 270000 transistors are integrated in a single chip VLSI by using 0.8 μm double metal CMOS technology
Keywords :
CCD image sensors; CMOS integrated circuits; VLSI; colour television cameras; image processing; video cameras; 0.8 micron; CCD colour video camera; addresses; charge coupled device; color filter array; color signal processing; digital effects system; digital zooming system; double metal CMOS technology; image buffers; image processing system; signal characteristics; single chip VLSI; transistors; Array signal processing; CMOS technology; Charge coupled devices; Charge-coupled image sensors; Color; Control systems; Digital signal processing; Filters; Image processing; Signal processing;
Journal_Title :
Consumer Electronics, IEEE Transactions on
