A Multi-scale Retinex Implementation on FPGA for An Outdoor Application

摘要：

Retinex is one of the well-known schemes for adaptive image enhancement under poor weather conditions. Improving the visibility of input images on a target detection system is necessary to insure detection work properly. Compared to other realization methods based on DSPs and FPGAs, this paper proposes a totally parallel structure based on FPGA to implement multi-scale Retinex for an outdoor application. Gaussian kernel is optimized with address encoding and distributed arithmetic, and parallel multi-scale convolutions are realized. No frame buffer is needed for the proposed implementation itself, so the system delay is greatly saved. Experiments show the good performance of the proposed multi-scale Retinex implementation by both subjective and objective assessments. Visibility of images suffering from fog degradation and uneven light is improved. And future work is presented in the conclusion.

关键词： Retinex image enhancement FPGA distributed arithmetic

作者: Yuecheng Li Hong Zhang Yuhu You Mingui Sun

作者单位: School of Astronautics Beihang University Beijing, China Departments of Neurosurgery, Electrical and Computer Engineering, and Bioengineering,University of P

会议类型: 国际会议

会议名称: 2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)

会议地点: 上海

会议语种:英文

页码: 1818-1822

在线出版日期: 2011-10-15（万方平台首次上网日期，不代表论文的发表时间）