The two demision image should be considers as areas rather than as rows and columns , and thus can be better handled by a truly two dimensional transform . the wavelets reconstruction algorithm based on non - seperatable mra filtered the projection data by two - demesions filter 二维图像应该被看作是一个区域而不是行和列,所以用二维变换来处理二维图像的方式更合适。
So , the integer wavelet transform is very important in such scenarios as lossless image compression , satellite image transmission , and so on . based on the integer wavelet transform , this article has studied 5 / 3 wavelet transform , and proposed a dedicated architecture to realize it . this architecture includes four parallel modules for computing , which use pipeline technology 本文以整数小波变换为研究对象,重点在二维整数5 / 3小波变换的基础上设计了一种并行结构,该结构将二维变换分为四个运算模块,这四个模块并行运算,各模块内部采用流水线技术。
Improving methods are introduced about how to solve the problem of initial value and global minimum , how to find the closest contour point , and how to find the 2d transformation of terrain matching algorithm based on icp algorithm in the dissertation . icp algorithm by igg m - estimation is proposed for improving the robustness . the simulation results show that the algorithm is reasonable and effective 本文对icp算法在水下潜器的地形匹配应用中的初值和全局最优、求最近点和进行二维变换等问题提出了改进的方法,而且提出了采用igg方案进行m估计以提高算法的鲁棒性,仿真结果证实此方案的合理性和有效性。