3-D noise analysis of underwater laser image sequence

HAN Hong-wei; ZHANG Xiao-hui; GE Wei-long

doi:10.3969/j.issn.1001-3806.2011.04.019

In order to study the noise characteristics of image frame sequence in a range-gated underwater laser imaging system,the method of 3-D noise analysis was adopted.In order to solve the problem of non-uniformity and sample inadequacy of the experimental data sets,simulated data set was composed of synthesized noise images produced according to single image frame.The calculation results of 3-D noise analysis based on the simulated data set and experimental data set were compared, which showed that the instant pixel noise describing the random variety along three directions was the main noise source in rangegated underwater laser image sequence and the effect of temporal noise was more severe than the spatial noise.Those results are helpful in the design of range-gated underwater laser imaging system and image denoising algorithm.

3-D noise analysis of underwater laser image sequence

Corresponding author: ZHANG Xiao-hui, zhangxiaohui505@vip.sina.com;

1. Department of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China

Received Date: 2010-09-15

Accepted Date: 2011-01-11

Available Online: 2011-07-25

Abstract: In order to study the noise characteristics of image frame sequence in a range-gated underwater laser imaging system,the method of 3-D noise analysis was adopted.In order to solve the problem of non-uniformity and sample inadequacy of the experimental data sets,simulated data set was composed of synthesized noise images produced according to single image frame.The calculation results of 3-D noise analysis based on the simulated data set and experimental data set were compared, which showed that the instant pixel noise describing the random variety along three directions was the main noise source in rangegated underwater laser image sequence and the effect of temporal noise was more severe than the spatial noise.Those results are helpful in the design of range-gated underwater laser imaging system and image denoising algorithm.

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3-D noise analysis of underwater laser image sequence

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