A false target criterion is introduced to distinguish between potential false objects and true beacon which based on the closed curve fitting of image edge.

提出一种基于图像边缘闭曲线拟合的虚警判据，能对潜在假目标进行准确的识别判断。

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In scene matching, false matching occurs due to brightness, contrast, scale, noise, and rotation difference between real-time target image and standard target image.

景象匹配中，实时目标图与基准目标图之间的亮度、对比度、噪声水平以及旋转等差异是造成误匹配的重要原因。

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