Noise suppression arithmetic based on statistical property of ladar range image

Yu Jiaqi; Yang Shuxing; Zhu Boli

doi:10.11884/HPLPB201527.111011

Volume 27 Issue 11

Nov. 2015

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Article Navigation > High Power Laser and Particle Beams > 2015 > 27(11): 111011

Yu Jiaqi, Yang Shuxing, Zhu Boli. Noise suppression arithmetic based on statistical property of ladar range image[J]. High Power Laser and Particle Beams, 2015, 27: 111011. doi: 10.11884/HPLPB201527.111011

Citation:

Yu Jiaqi, Yang Shuxing, Zhu Boli. Noise suppression arithmetic based on statistical property of ladar range image[J]. High Power Laser and Particle Beams, 2015, 27: 111011. doi: 10.11884/HPLPB201527.111011

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Noise suppression arithmetic based on statistical property of ladar range image

doi: 10.11884/HPLPB201527.111011

1.
Key Laboratory of Dynamics and Control of Flight Vehicle Ministry of Education,School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;
2.
Beijing Institute of Special Mechanic-Electric,Beijing 100012,China

Received Date: 2015-07-14
Rev Recd Date: 2015-09-29
Publish Date: 2015-10-27

Abstract

Abstract

Ladar range image is getting more and more attentions in the field of target recognition. The ladar range image will be severely disrupted when the ladar is working in a poor condition, it is necessary to remove the abnormal points that can not reflect true information. The distribution characteristics of the normal points are derived based on the distribution of the noises in the ladar range image, and a judging criterion of the abnormal points in ladar range image is obtained. The criterion can be expressed as a function of sampling distribution in small area, and its value can be estimated by the median method of robust statistics. Hence the anomalies can be removed and the ladar range image after noise suppression can be obtained. Both the simulation analysis and the actual ladar range image processing are carried out based on the proposed arithmetic and compared with the median filter arithmetic. The results show the noise suppression arithmetic based on the statistical property of ladar range image can not only remove noises very effectively, but also protect the details well. The algorithm makes full use of the high ranging accuracy of laser imaging radar, has the ability to deal with the requirement of different scenarios, and it is proved to be strongly practicable.
- image processing,
- laser imaging radar,
- range image noise suppression,
- robust statistic

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