So a method of image recognition with rotation and scale invariance is required to satisfy the practical application.
因此，需要寻找一种具有旋转和比例不变性的图像识别方法，以满足实际应用中的需要。
By applying wavelet analysis method to image edge detection, multi scale operator of wavelet analysis functions well for noise resisting ability and picture edge reserving.
将小波分析方法应用于图像边缘检测领域，小波分析的多尺度算子在抗噪声和保留图像边缘的能力上有比较好的效果。
It introduces a automatic alignment method between analog pointer meter's pointer and scale to replace the artificial alignment method with image processing technology.
介绍了一种用图像处理技术实现模拟指针表指针和刻度自动对准代替人工对准的方法。
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