translation invariant

These descriptors are invariant under translation, rotation, and scale, but variant under affine and projective transformation. Five-point invariant descriptor is a contour presentation method and consists of a series of five-point invariants.

这些描述子在相似变换下，能够保持平移、旋转、尺度不变，但在仿射投影变换情况下则不再保持不变性。五点不变量描述子也是一种描述轮廓的方法。

Compared of the wavelet threshold, denoising modulus maxima denoising and translation invariant in effecting the denoising. We have found that the wavelet threshold denoising preserved eggs percussion vibration signal noise cancellation. 4.

比较了小波阈值去噪、模极大值去噪和平移不变三种常用的小波去噪方法的去噪效果，发现小波阈值去噪方法对皮蛋敲击振动信号的消噪效果最佳。

Translation-Invariant De-noising of Body Fluttering Signal Based on Improved Threshold Function

基于改进阈值函数的体震信号平移不变去噪

An improved de-noising arithmetic is put forward by combining the new threshold function and translation invariant wavelet de-noising method.

将这种新的阈值函数与平移不变小波去噪法结合起来，提出了一种基于平移不变小波去噪的改进算法。

For a system, Hamiltonian is invariant under any translation of spatial coordinates.

对于一体系, 哈密算符在任何空间坐标变换下是不变的.

Then an improved method, namely translation invariant de noising was proposed.

在此基础上,探讨了对传统的阈值方法的改进, 即平移不变小波变换去噪法.

Then , translation invariant wavelet is introduced to suppress pseudogibbs phenomena at discontinuous points of the signal.

引入平移不变小波,较好地抑制了信号中的伪吉伯斯震荡.

Multimedia system uses the method of the translation invariant wavelet threshold to pretreat ECG data.

在多媒体系统中采用平移不变阈值法对心电图信号进行了预处理，可以有效的保留心电图信号中的奇异点，得到更加准确的心电图数据。