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The Image Retrieve Based on FPGA

Author: ZhaoChao
Tutor: ZhangZuoHuang
School: Jiangnan University
Course: Applied Computer Technology
Keywords: HSV Color histogram Gaussian filter FPGA
CLC: TP391.41
Type: Master's thesis
Year: 2010
Downloads: 112
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Abstract


With the rapid development of the Internet and the rapid growth of the image information from the vast amounts of digital image collection quickly extract valuable knowledge has become the people's urgent needs. Since the 1990s, based on the content based image retrieval (Content-based image retrieve, CBIR) technologies have emerged and become a hot research field of intelligent information processing. Content-based image retrieval techniques have been widely used in visual robot, fingerprint identification, medical and remote sensing image analysis and processing real-life, these practical applications of real-time image retrieval technology and the embedded environmental requirements increasingly higher. So, how fast and efficient image retrieval in embedded environments, has become a new development direction. The rapid development of FPGA (Field Programmable Gate Array, field-programmable gate array) for embedded image retrieval system implementation to provide a hardware guarantee. FPGA is a high-density programmable logic devices, are widely used in digital logic system design as a piece of a complex configuration calculator, able to meet those applications that need both speed and flexibility. This paper first introduces the FPGA technology, EDA technology, hardware description language and modular design method, and then discusses the current popular image retrieval method, the color space of the image retrieval technology based on color features, color quantization, the color characteristics of the expression and The similarity measures were described in detail. In order to resolve the contradictory relationship between the accuracy and efficiency in query of queries are not well coordinated with a single image feature vector image database, designed an integrated multi-dimensional feature vector hierarchical retrieval algorithms. In order to solve the problem of low efficiency of traditional color histogram algorithm retrieval low accuracy and retrieval of fuzzy color histogram algorithm designed a the histogram Gaussian filter retrieval algorithms. Image retrieval algorithm, in order to further improve the efficiency of the image retrieval and image retrieval can be applied to the broader embedded environment, and not just limited to PC applications, FPGA-based hardware platform design and system software to achieve, to complete the image retrieval system based on FPGA hardware implementation. The subject of research on color-based image retrieval algorithm and image retrieval hardware implementation has important practical significance, has a good reference scale embedded image retrieval.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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