连续Gabor变换事实上是对f 作一个好的定位切片之后，即给函数f 开窗后再取它的Fourier变换。-Continuous Gabor transform is in fact a good positioning slice of f, that is, to the function f window and then take its Fourier transform.

Set of functions performing ct reconstruction tasks like a radon transformation, a simple backprojection, a filtered backprojection using a convolution in the spatial domain, a filtered backprojection using a 2D Fourier transformation, and a filtered