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Rapid ranging through evaluation of image distortion

机译:通过评估图像失真来快速测距

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Distortion is an undesirable aberration found in optical imaging systems, necessitating numerical calibration. However, the fact that image distortion changes with observation distance can be used for ranging. This study developed a rapid, passive-ranging technique, which is simple, incurs low costs, results in minimal interference, and requires few parameters. After determining the location of reference points, the relationship between the normalized mean distortion of images and observation distance is described using two mathematical models, one of which is based on distortion theory and the other is derived from the curve fitting of the experimental results. Analyzing the instantaneous rate of image distortion can also assist in ranging. The proposed technique demonstrates high sensitivity at closer observation distances, but loses effectiveness as observation distances increase.
机译:失真是在光学成像系统中发现的不希望有的像差,因此需要进行数值校准。然而,图像失真随观察距离而变化的事实可以用于测距。这项研究开发了一种快速的无源测距技术,该技术简单,成本低,干扰最小,所需参数少。确定参考点的位置后,使用两个数学模型描述图像的归一化平均失真与观察距离之间的关系,其中一个数学模型是基于失真理论的,另一个是根据实验结果的曲线拟合得出的。分析图像失真的瞬时速率也可以帮助进行测距。所提出的技术在更近的观察距离处显示出高灵敏度,但是随着观察距离的增加而失去有效性。

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