摘要：变形车牌矫正和复杂牌照的文字区域提取是LPR中两个比较重要的问题。本文运用MATLAB，通过Radon 变换检测牌照的角度，使用旋转与错切变换相结合的方法来解决变形牌照矫正问题；通过对牌照区域进行颜色提取从 而消除非牌照颜色的干扰，解决复杂牌照的文字区域提取问题。-Abstract: The distortion correction and complexity of the license plate text area extraction is the LPR in the

用于地震数据的拉冬变换,可以分离直达波，折射波河反射波-use to radon change

本文就着重比较Radon-Wigner变换、离散Chirp-Fourier变换等方法的优劣。-This article on a comparison of the Radon-Wigner transformation, the advantages and disadvantages of the discrete Chirp-Fourier transform method.

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

MATLAB solution to generate the matrix representation of a discrete Radon transform (DRT)