一种改进的轮廓小波变换及其图像去噪应用_电子资料文库 关键词: 平移不变性;人为视觉效果;方向滤波器组 [gap=1082]key words: translation invariance; visual artifacts; directional filter banks
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partial translation invariance 部分平移不变
Space Translation Invariance 空间平移不变性
translation invariance and scale invariance 平移和尺度变换不变性
translation and scale invariance 平移和尺度变换不变性
Compared with the traditional de-nosing methods by threshold value and translation invariance, the algorithm increases the signal to noise ratio.
与传统的阈值去噪法和基于平移不变量的去噪算法相比，该算法提高了信噪比。
However, the original contourlet transform has a certain redundancy and lacks translation invariance, it tends to have its limitation in the applications such as image processing.
但是，原始的轮廓波变换由于采用拉普拉斯塔式变换而存在一定的冗余度，并且缺乏平移不变性，因此在图像处理等应用中具有其局限性。
This paper analyses the influence of scale factor on moment invariant features in discrete, constructs a new moment invariant with both scale, translation and rotating invariance.
分析了在离散状态下比例因子对不变矩特征的影响，构造了一种新的不变矩，使其具有平移、旋转和比例因子的不变性。
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