基于背景提取和分区修复的DIBR空洞填补方法

针对基于深度图的视点绘制中空洞填补时产生的图像失真问题,提出一种还原空洞区域可靠纹理的空洞填补方法。通过从临近的帧画面中提取有效信息还原真实的背景图像,用于新视点中背景区域的空洞填补。并通过区分前景和背景图像区域,对不同区域的空洞采取不同的填充方法,从而获得较为可靠和真实的填补效果。从实验结果来看,该方法获得的PSNR数据优于其他算法,并且与真实视点比较的结构相似度达到99.1%,比传统方法提高10%以上。     

Advances in Optical Single‐Molecule Detection: En Route to Supersensitive Bioaffinity Assays

The ability to detect low concentrations of analytes and in particular low‐abundance biomarkers is of fundamental importance, e.g., for early‐stage disease diagnosis. The prospect of reaching the ultimate limit of detection has driven the development of single‐molecule bioaffinity assays. While many review articles have highlighted the potentials of single‐molecule technologies for analytical and diagnostic applications, these technologies are not as widespread in real‐world applications as one should expect. This Review provides a theoretical background on single‐molecule—or better digital—assays to critically assess their potential compared to traditional analog assays. Selected examples from the literature include bioaffinity assays for the detection of biomolecules such as proteins, nucleic acids, and viruses. The structure of the Review highlights the versatility of optical single‐molecule labeling techniques, including enzymatic amplification, molecular labels, and innovative nanomaterials.     

光电效应实验分析

分析了光电效应实验中用反向遏止电压法测量普朗克常量的实验原理，讨论了可能影响实验精度的几种电流。     

一种便携型彩色液晶电视的设计与制作

在分析研究液晶电视的调谐器、中频放大电路、音视频解码电路、液晶行列驱动电路、液晶屏和电源等部分的基础上,对其核心部分液晶显示器升压电路、调谐电压电路设计方案进行优化,将视频解码电路进行合理布局和调试,提出了驱动电压转换以及NTSC制改为PAL制的改制方法。用TFT液晶屏作显示器,同时为了与液晶显示器重量轻、耗电少的优势相配合,在电源的选择上,抛弃传统的变压器降压方式,采用开关电源供电,降低了功耗,体积和重量大大地减小,研制出一台具有较高收视性能的彩色液晶电视。     

Cosmic microwave background anisotropy constraints on relict neutrinos

I discuss basic theory of effect of the properties of the cosmological relict neutrinos on the observations of the cosmic microwave background anisotropy.     

XPS survey spectra simulation of nano‐structured surfaces

We have developed a software tool for the generation of survey spectra in X‐ray photoelectron spectroscopy (GOSSIP) to simulate wide spectra in the range 200–1500 eV from nano‐structured surfaces. It is based on linear combination of delta layers spectra with the atomic spectra of the elements or compounds of the surface to be simulated. The set of delta layers to reproduce any model is a 200‐file database of thin layers regularly buried up to a depth of 40 nm and has been generated with QUASES^™. The atomic spectra that constitute a second database have themselves been determined with QUASES^™ from experimental spectra of the elements or compounds in pure form. The principle of GOSSIP is described. Then the generation process is validated by comparison with experimental data for simple rectangular in‐depth distribution of elements. Copyright © 2009 John Wiley & Sons, Ltd.     

Two-loop calculations of the matrix σ-model effective action in the background field formalism

We consider the matrix σ-model in the background field formalism. In the two-loop approximation, we demonstrate the equality of “running coupling constants” in the momentum cutoff regularization and in the dimensional regularization by direct calculation. We verify that the β-function coincides with the previously obtained data. __________ Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 154, No. 2, pp. 354–362, February, 2008.     

基于自适应背景图像更新的运动目标检测方法

在运动目标的实时检测中常用的方法是背景图像差分法,但因其缺乏背景图像随监视场景光照变化而及时更新的合理方法,限制了本方法的适应性.对此,本文首先提出了一种基于光流场等技术的自适应背景逼近更新方法,并根据彩色差值模型得到差分图像;然后引入Gauss模型实现运动目标的自适应阈值分割.实验结果表明:本文提出的背景更新方法可随着光照条件的变化实时、准确地更新背景图像,在此基础上提出的基于Gauss模型的自适应阈值分割方法可以实现运动目标的完整分割,这为运动目标的后续识别与理解奠定了基础.     

LIGHT SCATTERING AND INFRARED RADIATION OF SPATIAL OBJECTS

In this paper, the characteristic of light scattering and infrared radiation of spatial objects are discussed. The spectral distribution of solar, sky and earth background radiation is given. Based on theories of heat transfer, background radiation and the law of energy conservation, the thermal balance equation for spatial objects can be obtained. With the equation solved and thermal meshwork method, the variation of the thermal equilibrium temperature and radiation power with height is discussed under the conditions of different time zone and altitude.     

塞曼效应校正光谱背景吸收技术

论述了塞曼效应校正光谱背景吸收技术的物理原理，讨论了仪器结构及工作原理、特点，以及磁场强度对校正背景效果的影响。