Compared with the floating-point computing method, the shift-add operation is simpler, and can be implemented easily by VLSI, which enables the real-time image processing to be realized by hardware.

相对于浮点计算法，移位-加操作最大的优点是计算简单，特别易于超大规模集成电路实现，因而使硬件实时处理图像信号成为可能。

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The Otsu's method is an effective algorithm for image segmentation. But it is unfit for the real-time image processing in the high frame rate infrared imaging tracking system for it is time-consuming.

最大类间方差法是一种常用而有效的图像分割算法，但由于计算量较大，不适宜于红外成像跟踪系统中高帧频的实时图像处理。

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Fast edge extraction and segmentation in noisy image is a difficult problem in real-time image processing.

噪声图象的快速边缘提取和分割是实时图象处理中的重要问题。

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