,Point Spread Function Estimation for a Turbulence-Degenerated Image Based on (A)trous Wavelet Trans

来源 :中国物理快报(英文版) | 被引量 : 0次 | 上传用户:liuliyuanll
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The observed object images are seriously blurred because of the influence of atmospheric turbulence. The restora-tion is required for the reconstruction of turbulence degraded images. Point spread function (PSF) estimation, an essential part of image restoration, has no accurate estimation algorithm at present. Based on the atrous wavelet, we deduce a novel PSF estimation algorithm. First, the atrous wavelet at varying scales is transformed. Then, on the basis of the relation among the local maxima of the modulus of the wavelet coefficients at different scales, the Lipschitz exponent of the wavelet coefficients is computed, thus the variance of a PSF is estimated. From this estimated variance, one is able to obtain the PSF. Consequently, the object image can be restored. Experimental results show that the proposed method is highly effective with good performance.
其他文献
期刊
我有一位亲密无间的好朋友,她叫强子怡.我们俩无话不谈,在一起总有许许多多有意思的事.rn三年级的时候,我们班里“爆发”了一场外号风波.我的外号是“小李飞刀”,强子怡呢?是
期刊
The forced Duffing oscillator has a pair of symmetrical attractors in a proper parameter regime. When a lot of Duffing oscillators are coupled linearly, the sys
期刊
期刊
期刊
种草养鱼的意义 (一)饲草营养价值高,来源广泛,生产容易,是发展养鱼业的物质基础。青草粗蛋白含量较多,质量好。青草中粗蛋白质含量一般占干物质的12—25%,如苏丹草、黑麦草
功能复合材料即铟锑—镍锑(InSb—NiSb)是一种高性能磁阻材料。当外加磁场变化时,这种材料本身的电阻值发生数倍变化。利用这一性质,它可以制成多种精密的传感器和电子器件。
期刊
We propose a modified formula which is used to determine the coupling parameter C in the Hamiltonian of the single-j shell. In comparison with the previously kn
期刊