2D high-frequency forward-looking sonar simulator based on continuous surfaces approach
2D high-frequency forward-looking sonar simulator based on continuous surfaces approach
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DOI：
10.3906/elk-1305-188
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发表时间：
2015-01-01
影响因子：
1.1
通讯作者：
Bozdagi Akar, Gozde
中科院分区：
文献类型：
--
作者：
Sac, Hakan;Leblebicioglu, Kemal;Bozdagi Akar, Gozde
光学相机在清澈的沃茨水域提供详细的图像。然而，在黑暗或浑浊的沃茨中，来自电光传感器的信息不足以进行精确的场景感知。成像声纳，也称为声学相机，可以在这些场景中提供增强的目标细节。本文提出了一种计算效率高的二维高频前视声纳图像模拟器。详细说明了图像形成过程的阶段和要求。针对声纳回波信号的后处理，提出了一种基于模拟表面几何结构的计算引擎。通过单独处理所有连续表面，模拟器能够准确计算2D声纳图像中的亮区和阴影区。
Optical cameras give detailed images in clear waters. However, in dark or turbid waters, information coming from electro-optical sensors is insufficient for accurate scene perception. Imaging sonars, also known as acoustic cameras, can provide enhanced target details in these scenarios. In this paper, a computationally efficient 2D high-frequency, forward-looking sonar image simulator is presented. Stages and requirements of the image formation process are explained in detail. For the postprocessing of the returned sonar signals, a novel computation engine is proposed based on the geometric structures of the simulated surfaces. By treating all the continuous surfaces separately, the simulator is able to exactly calculate bright and shadowed zones in the 2D sonar image.