Imaging Science and Photochemistry ›› 2015, Vol. 33 ›› Issue (4): 330-335.DOI: 10.7517/j.issn.1674-0475.2015.04.330

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Research on a Real-time High Dynamic Range Image Synthesis Algorithm for Parallel Computing Environment

WANG Xuan1, CHEN Xin2, LIU Wei1   

  1. 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
  • Received:2014-12-17 Revised:2015-05-12 Online:2015-07-16 Published:2015-07-16

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.

Key words: high dynamic range image(HDRI), digital signal process (DSP), field-programmable gate array (FPGA)