作者单位
摘要
宁波大学信息科学与工程学院, 浙江 宁波 315211
在观看立体图像时,人类视觉系统(HVS)以人眼视网膜细胞为媒介接收、传输和理解双目信息,基于此提出了一种仿视觉细胞模型的立体图像质量评价(SIQA)方法。以视网膜细胞特性为基础,模仿HVS 对简单细胞和复杂细胞进行建模;双目信息经简单-复杂细胞模型处理得到双目融合视点图(BFVM)和双目细胞差异图(BCDM),采用多尺度结构相似度(MSSIM)算法分别对原始、失真立体图像的BFVM 和BCDM 进行双目融合评价(BFQA)和双目立体感评价(BSPA);对BFQA 和BSPA 的评价值进行加权融合得到最终评价值。实验结果表明,该方法的Pearson 线性相关系数在0.94 以上,Spearman 秩相关系数在0.93 以上,该模型符合人眼视觉特性,能够较好地预测立体图像质量。
图像处理 立体图像质量评价 人类视觉系统 视觉细胞模型 双目融合 简单-复杂细胞 
激光与光电子学进展
2016, 53(4): 041004
Author Affiliations
Abstract
1 State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, and Center for Quantum Information Technology, Peking University, Beijing 100871, China
2 State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
A 459 nm Faraday anomalous dispersion optical filter (FADOF) working at the side wings of the cesium 6S1∕2 → 7P1∕2 transition with weak oscillator strength is achieved. The transmittance of the higher side wing reaches 98% at a temperature of 179°C and magnetic field above 323 G. The experimental results coincide with the theoretical predictions in 1982 and 1995, which were not realized in experiments for over three decades. Due to its high transmittance, high accuracy, and narrow linewidth, the 459 nm FADOF can be applied in underwater optical communications, the building of active optical clocks, and laser frequency stabilization in active optical clocks.
Filters Filters Faraday effect Faraday effect Spectroscopy Spectroscopy atomic atomic 
Photonics Research
2015, 3(5): 05000275

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