Using a neural networks algorithm for high-resolution imaging in pulsed laser radar

Mojtaba Joodaki; Guenter Kompa; Seyed M. Golam Arshad; Vahid Ahmadi; Mohammed K. Moravvej-Farshi

doi:10.1117/12.449335

13 November 2001 Using a neural networks algorithm for high-resolution imaging in pulsed laser radar

Mojtaba Joodaki, Guenter Kompa, Seyed M. Golam Arshad, Vahid Ahmadi, Mohammed K. Moravvej-Farshi

Proceedings Volume 4471, Algorithms and Systems for Optical Information Processing V; (2001) https://doi.org/10.1117/12.449335
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

A new imaging method which can obtain the gray levels directly from the output waveform of Pulsed Laser Radar (PLR) is developed. A simple digital signal processing technique and multi layer perceptrons (MLP) type neural network (NN) have been used to obtain the gray level information from the pulse shapes. The method has been implemented in a real PLR to improve contrast and speed of 2D imaging in PLR. To compare the method with the standard method, a picture consists of 16 gray levels (from 0 for black to 1 for white) with both method has been scanned. Because of the ability of NNs in extracting the information from nonlinear and noisy data and preprocessing of the noisy input pulse shapes to the NN, the average and maximum of errors in the gray levels in comparison with standard method more than 88.5% and 72.6% improved, respectively. Because in this method the effect of the noise is decreased, it is possible to make the imaging with the same resolution as in standard method but with a lower averaging in sampling unit and this dramatically increases speed of the measurements.

Citation Download Citation

Mojtaba Joodaki, Guenter Kompa, Seyed M. Golam Arshad, Vahid Ahmadi, and Mohammed K. Moravvej-Farshi "Using a neural networks algorithm for high-resolution imaging in pulsed laser radar", Proc. SPIE 4471, Algorithms and Systems for Optical Information Processing V, (13 November 2001); https://doi.org/10.1117/12.449335

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