| 一种适用于并行运算处理的实时高动态范围图像合成算法研究 |
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| 引用本文： | 王旋,陈忻,刘巍.一种适用于并行运算处理的实时高动态范围图像合成算法研究[J].影像科学与光化学,2015,33(4):330-335. |
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| 作者姓名： | 王旋 陈忻 刘巍 |
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| 作者单位： | 1. 武汉第二船舶设计研究所, 湖北 武汉 430064;
2. 中国科学院 上海技术物理研究所, 上海 200083 |
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| 摘 要： | 针对目前现有高动态范围图像(HDRI)的合成算法因复杂度高而难以应用于强实时系统的缺点,本文提出了一种适用于并行运算处理硬件的基于多曝光时间的实时HDRI合成算法。该方法首先完成探测器光照响应曲线的生成与标定,然后在现场可编程门列阵(FPGA)中通过数字信号处理技术完成多曝光图像序列的场景照度恢复以及像素的实时融合。仿真验证结果表明,该算法能够正确有效地在FPGA中执行,可达到实时HDRI获取的设计要求。
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| 关 键 词： | 高动态范围图像 数字信号处理 FPGA |
| 收稿时间： | 2014-12-17 |
Research on a Real-time High Dynamic Range Image Synthesis Algorithm for Parallel Computing Environment |
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| WANG Xuan,CHEN Xin,LIU Wei.Research on a Real-time High Dynamic Range Image Synthesis Algorithm for Parallel Computing Environment[J].Imaging Science and Photochemistry,2015,33(4):330-335. |
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| Authors: | WANG Xuan CHEN Xin LIU Wei |
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| Institution: | 1. Wuhan Second Ship Design and Research Institute, Wuhan 430064, Hubei, P. R. China;
2. Shanghai Institute of Technical Physics of CAS, Shanghai 200083, P. R. China |
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| Abstract: | High dynamic range image (HDRI) synthesis is of high algorithm complexity, which makes it almost impossible to implement in real-time processing situation. To deal with this drawback, we proposed a real-time HDRI synthesis algorithm that is applicable to hardware which can deal with parallel computing. This method first derives detector illumination response function, and then accomplishes the recovery of illuminances on scenes of multi-exposure images and real-time integration of pixels through digital signal processing on FPGA. Simulation results indicate the correctness and efficiency of this algorithm, which also can meet the design requirements in real-time processing. |
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| Keywords: | high dynamic range image(HDRI) digital signal process (DSP) field-programmable gate array (FPGA) |
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