基于DCT的广义指数阈值衰减凸集投影算法在位场数据补空中的应用

艾寒冰, 王彦国

Interpolation of potential-field data by Projection Onto Convex Sets algorithm with generalized exponential threshold and based on Discrete Cosine Transform

AI Han-Bing, WANG Yan-Guo

图10 图7采用线性与指数阈值衰减POCS算法的数据补空结果及其残差结果 a、b—线性阈值插值及残差; c、d—指数阈值(Para=0.5)及残差;e、f—指数阈值(Para=1)及残差;g、h—指数阈值(Para=2)及残差

Fig.10 Results of interpolation using POCS method with linear and exponential threshold model and the differences with the noise-free data a、b—interpolated result using linear threshold and its residuo;c、d—interpolated result using exponential threshold (Para=0.5) and its residuo;e、f—interpolated result using exponential threshold (Para=1) and its residuo;g、h—interpolated result using exponential threshold (Para=2) and its residuo