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Proceedings Paper

DSP+FPGA-based real-time histogram equalization system of infrared image
Author(s): Dongsheng Gu; Nansheng Yang; Defu Pi; Min Hua; Xiaoyan Shen; Ruolan Zhang
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Paper Abstract

Histogram Modification is a simple but effective method to enhance an infrared image. There are several methods to equalize an infrared image's histogram due to the different characteristics of the different infrared images, such as the traditional HE (Histogram Equalization) method, and the improved HP (Histogram Projection) and PE (Plateau Equalization) method and so on. If to realize these methods in a single system, the system must have a mass of memory and extremely fast speed. In our system, we introduce a DSP + FPGA based real-time procession technology to do these things together. FPGA is used to realize the common part of these methods while DSP is to do the different part. The choice of methods and the parameter can be input by a keyboard or a computer. By this means, the function of the system is powerful while it is easy to operate and maintain. In this article, we give out the diagram of the system and the soft flow chart of the methods. And at the end of it, we give out the infrared image and its histogram before and after the process of HE method.

Paper Details

Date Published: 16 October 2001
PDF: 6 pages
Proc. SPIE 4602, Semiconductor Optoelectronic Device Manufacturing and Applications, (16 October 2001); doi: 10.1117/12.445721
Show Author Affiliations
Dongsheng Gu, Nanjing Univ. of Science and Technology (China)
Nansheng Yang, Kunming Institute of Physics (China)
Defu Pi, Nanjing Univ. of Science and Technology (China)
Min Hua, Nanjing Univ. of Science and Technology (China)
Xiaoyan Shen, Nanjing Univ. of Science and Technology (China)
Ruolan Zhang, Kunming Institute of Physics (China)


Published in SPIE Proceedings Vol. 4602:
Semiconductor Optoelectronic Device Manufacturing and Applications

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