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Low-complexity camera digital signal imaging for video document projection system

[+] Author Affiliations
Shih-Chang Hsia

National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin, Kaohsiung, 64002 Taiwan

Po-Shien Tsai

Himax Technology CorporationTaiwan

J. Electron. Imaging. 20(2), 023007 (April 27, 2011). doi:10.1117/1.3580749
History: Received September 13, 2010; Revised March 27, 2011; Accepted March 28, 2011; Published April 27, 2011; Online April 27, 2011
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We present high-performance and low-complexity algorithms for real-time camera imaging applications. The main functions of the proposed camera digital signal processing (DSP) involve color interpolation, white balance, adaptive binary processing, auto gain control, and edge and color enhancement for video projection systems. A series of simulations demonstrate that the proposed method can achieve good image quality while keeping computation cost and memory requirements low. On the basis of the proposed algorithms, the cost-effective hardware core is developed using Verilog HDL. The prototype chip has been verified with one low-cost programmable device. The real-time camera system can achieve 1270 × 792 resolution with the combination of extra components and can demonstrate each DSP function.

© 2011 SPIE and IS&T.

Citation

Shih-Chang Hsia and Po-Shien Tsai
"Low-complexity camera digital signal imaging for video document projection system", J. Electron. Imaging. 20(2), 023007 (April 27, 2011). ; http://dx.doi.org/10.1117/1.3580749


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