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Research on high-speed CMOS smart camera

Author: GuoWenBao
Tutor: WeiZhongHui
School: Graduate Schoo,Chinese Academy of Sciences
Course: Mechanical and Electronic Engineering
Keywords: CMOS image sensor Smart Cameras FPGA Non-uniformity correction
CLC: TB852.1
Type: Master's thesis
Year: 2010
Downloads: 119
Quote: 0
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Abstract


In recent years , with the IC design technology and the continuous improvement of the level of technology , CMOS image sensor developed rapidly. CMOS image sensors have been present in the signal to noise ratio , sensitivity and dynamic range of light gained a CCD image sensor and mature similar performance. The advantages of CMOS image sensors CCD device is incomparable, it is highly integrated , flexible control, and power, and relatively low cost . More importantly, the speed of the inherent advantages of CMOS image sensors . Therefore, in the field of digital imaging , especially in the field of high-speed digital imaging , CMOS image sensors gradually occupy an increasingly important position . Smart cameras is the use of optical imaging techniques to form an image signal in real-time from the automatic identification of the target , the target feature extraction process and thus discrimination based on the results of field devices to control the operation of embedded machine vision systems. Its output is the digital image understanding and analysis of the results , and not just a digital image . In high-speed digital imaging technology is relatively mature, intelligent high-speed imaging systems to promote better research significance and practical value. This article describes the CMOS sensor and intelligent imaging system development and current situation , a detailed analysis of Cypress's LUPA1300-2 type CMOS image sensor performance and technical characteristics of the structure and describes the working principle of smart cameras , structural features , analyzes the smart camera system's hardware and software technology base. On this basis , based on Xilinx's XC4VFX12FFG668 based FPGA design to achieve a high-speed CMOS intelligent imaging systems. Using Verilog HDL language designed sequential circuits , complete control of the CMOS sensor , pixel processing , and real-time image acquisition to non- uniformity correction , improve image quality. Transfer images using the Camera Link interface, and the use of image acquisition card images displayed on the PC . While providing PAL-D interface and VGA interface , to meet different application occasions . Practical application shows that the system is stable , flexible control , image clear and stable , shooting speed, can be used in high speed imaging applications.

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CLC: > Industrial Technology > General industrial technology > Photography > Photographic machines and equipment > Photographic equipment and replication equipment > Camera
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