Motion‐blur characterization on liquid‐crystal displays

Abstract— In this paper, several methods to characterize motion blur on liquid‐crystal displays are reviewed. Based on the assumptions of smooth‐pursuit eye tracking and one‐frame temporal luminance integration, a simple algorithm has been proposed to calculate the normalized blurred edge width (N‐BEW) and motion‐picture response time (MPRT) with a one‐frame‐time moving‐window function to LC temporal step response curves. A custom measurement system with a fast‐eye‐sensitivity‐compensated photodiode has been developed to characterize motion blur based on LC response curves (LCRCs). MPRT values obtained by using the algorithm mentioned above and those from the smooth‐pursuit‐camera methods agree. Perception experiments were conducted to validate the correspondence between the simulated results and actual perceived images by the human eyes. In addition, the insufficiency of MPRT to evaluate motion blur on impulse‐type light‐generation LCDs, by analyzing the measurement results of a scanning backlight LCD, is discussed.     

The CAS-PEAL Large-Scale Chinese Face Database and Baseline Evaluations

In this paper, we describe the acquisition and contents of a large-scale Chinese face database: the CAS-PEAL face database. The goals of creating the CAS-PEAL face database include the following: 1) providing the worldwide researchers of face recognition with different sources of variations, particularly pose, expression, accessories, and lighting (PEAL), and exhaustive ground-truth information in one uniform database; 2) advancing the state-of-the-art face recognition technologies aiming at practical applications by using off-the-shelf imaging equipment and by designing normal face variations in the database; and 3) providing a large-scale face database of Mongolian. Currently, the CAS-PEAL face database contains 99 594 images of 1040 individuals (595 males and 445 females). A total of nine cameras are mounted horizontally on an arc arm to simultaneously capture images across different poses. Each subject is asked to look straight ahead, up, and down to obtain 27 images in three shots. Five facial expressions, six accessories, and 15 lighting changes are also included in the database. A selected subset of the database (CAS-PEAL-R1, containing 30 863 images of the 1040 subjects) is available to other researchers now. We discuss the evaluation protocol based on the CAS-PEAL-R1 database and present the performance of four algorithms as a baseline to do the following: 1) elementarily assess the difficulty of the database for face recognition algorithms; 2) preference evaluation results for researchers using the database; and 3) identify the strengths and weaknesses of the commonly used algorithms.     

Haptic force control based on impedance/admittance control aided by visual feedback

This paper demonstrates a haptic device for interaction with a virtual environment. The force control is added by visual feedback that makes the system more responsive and accurate. There are two popular control methods widely used in haptic controller design. First, is impedance control when user motion input is measured, and then, the reaction force is fed back to the operator. The alternative method is admittance control, when forces exerted by user are measured and motion is fed back to the user. Both, impedance and admittance control are also basic ways for interacting with a virtual environment. In this paper, several experiments were performed to evaluate the suitability of force-impedance control for haptic interface development. The difference between conventional application of impedance control in robot motion control and its application in haptic interface development is investigated. Open loop impedance control methodology is implemented for static case and a general-purpose robot under open loop impedance control was developed as a haptic device, while a closed loop model based impedance control was used for haptic controller design in both static and dynamic case. The factors that could affect to the performance of a haptic interface are also investigated experimentally using parametric studies. Experimental results for 1 DOF rotational motion and 2 DOF planar translational motion systems are presented. The results show that the impedance control aided by visual feedback broaden the applicability of the haptic device and makes the system more responsive and accurate.

一种组合电路内建自测试的改进方法

对组合电路的测试提出了一种将确定性测试生成方法与内建自测试相结合的设计方案;设计实现了利用D算法生成的测试矢量和伪随机测试序列生成电路共同构成测试矢量生成模块,利用内建自测试方法完成可测性设计,并将两者结合得出组合电路内建自测试的改进方法;分析与实验结果表明,该方法能减少系统硬件占用,同时具有测试向量少、故障覆盖率高的特点。     

文字设计艺术在电视节目包装中的应用

文字是电视节目包装中的重要元素之一,除了传达信息的基本功能之外,经常起到决定整体效果的关键作用。节目包装文字设计应突出本台文化和本土文化,文字的设计必须与节目相匹配,形成统一整体。     

实时MP2音频编码算法的优化设计

MPEG音频编码标准的实现算法比较复杂,而目前对该算法的优化大部分集中在在对算法的简化上,以减少运算量,在这方面已经有了很大的发展,通过从算法编码实现上,讨论对MP2编码算法的优化.     

Building a portable data and information interoperability infrastructure-framework for a standard Taiwan Electronic Medical Record Template

Traditional electronic health record (EHR) data are produced from various hospital information systems. They could not have existed independently without an information system until the incarnation of XML technology. The interoperability of a healthcare system can be divided into two dimensions: functional interoperability and semantic interoperability. Currently, no single EHR standard exists that provides complete EHR interoperability. In order to establish a national EHR standard, we developed a set of local EHR templates. The Taiwan Electronic Medical Record Template (TMT) is a standard that aims to achieve semantic interoperability in EHR exchanges nationally. The TMT architecture is basically composed of forms, components, sections, and elements. Data stored in the elements which can be referenced by the code set, data type, and narrative block. The TMT was established with the following requirements in mind: (1) transformable to international standards; (2) having a minimal impact on the existing healthcare system; (3) easy to implement and deploy, and (4) compliant with Taiwan's current laws and regulations. The TMT provides a basis for building a portable, interoperable information infrastructure for EHR exchange in Taiwan.     

一种快速、鲁棒的唇动检测与定位方法

提出了一种利用唇色在彩色空间分布信息和唇在人脸区域的几何分布特性进行快速、鲁棒的唇动检测与定位的方法。在该方法中,首先提出采用有约束的Fisher变换进行嘴唇图像增强;然后利用嘴唇在人脸区域的几何分布特性,来提高唇动定位的速度和准确性,唇动定位主要利用两种几何分布特性：（1）利用唇的区域面积和人脸的区域面积比值变化范围不大这一特性自适应确定区分唇色和肤色的值。（2）利用外唇参数与内唇参数之间有近似线性关系的假设,用外唇参数预测内唇参数,克服内唇定位经常陷于局部最小、定位不准的缺陷。实验证明,该唇动检测与定位系统无论从速度还是从可靠性、准确性都能满足应用的要求。     

基于维修时间约束的机群系统可用度的仿真算法

在描述机群系统运行状态的基础上,通过对各结点间结构功能关系的量化处理,给出了描述机群系统中各结点随机变量的概率分布及其抽样方法;然后,依据对故障发生状态和修复状态的识别,确定出各结点的工作状态,从而建立了可用性仿真逻辑关系,得到了机群系统可用度的估计值,为机群系统可用性分析与设计提供了定量依据。