Single‐shot High Dynamic Range Imaging Using Coded Electronic Shutter

Typical high dynamic range (HDR) imaging approaches based on multiple images have difficulties in handling moving objects and camera shakes, suffering from the ghosting effect and the loss of sharpness in the output HDR image. While there exist a variety of solutions for resolving such limitations, most of the existing algorithms are susceptible to complex motions, saturation, and occlusions. In this paper, we propose an HDR imaging approach using the coded electronic shutter which can capture a scene with row‐wise varying exposures in a single image. Our approach enables a direct extension of the dynamic range of the captured image without using multiple images, by photometrically calibrating rows with different exposures. Due to the concurrent capture of multiple exposures, misalignments of moving objects are naturally avoided with significant reduction in the ghosting effect. To handle the issues with under‐/over‐exposure, noise, and blurs, we present a coherent HDR imaging process where the problems are resolved one by one at each step. Experimental results with real photographs, captured using a coded electronic shutter, demonstrate that our method produces a high quality HDR images without the ghosting and blur artifacts.     

影响单丝牌号5000S产品质量的因素分析

单丝牌号5000S是大庆HDPE装置的主要产品,适用于加工渔网丝、编织袋等产品。作者们讨论了产品的物性参数特点,分析了以往产品质量存在的主要问题。从工艺技术方面对于如何提高5000S产品的优级品率,提高产品的加工性能和使用性能进行了讨论。     

Evaluation of polymer rheology from drop spreading experiments

In this paper, spreading experiments on “heavy” polymer drops are performed. “Heavy” refers to large polymer drops, i.e., the radius of the drop, R, is much larger than the capillary length, κ^-1, so that the spreading is dictated by gravity. The zero-shear viscosity can be found from measurements of the time-dependent drop radius or vice versa. Viscosity values found from spreading experiments compare well with the viscosity values found from dynamic rheological experiments.     

Advancements in the design and validation of an air pollution integrated assessment model for Spain

This paper describes the design and application of the Atmospheric Evaluation and Research Integrated model for Spain (AERIS). Currently, AERIS can provide concentration profiles of NO₂, O₃, SO₂, NH₃, PM, as a response to emission variations of relevant sectors in Spain. Results are calculated using transfer matrices based on an air quality modelling system (AQMS) composed by the WRF (meteorology), SMOKE (emissions) and CMAQ (atmospheric-chemical processes) models. The AERIS outputs were statistically tested against the conventional AQMS and observations, revealing a good agreement in both cases. At the moment, integrated assessment in AERIS focuses only on the link between emissions and concentrations. The quantification of deposition, impacts (health, ecosystems) and costs will be introduced in the future. In conclusion, the main asset of AERIS is its accuracy in predicting air quality outcomes for different scenarios through a simple yet robust modelling framework, avoiding complex programming and long computing times.     

一种并行中英文混合多模式匹配算法

针对中英文混合文本的匹配准确性及大规模数据文本的匹配效率等问题,基于经典的线索化完全哈希特里树算法,提出一种并行化的中英文混合多模式文本匹配算法。采用拆分文本降低多模式匹配算法的串行度,进而在拆分出的小文本上并行地执行文本匹配。通过并行化预处理过程,设计新的存储结构。实验结果表明,该算法在保证结果正确的前提下,执行效率高于经典的串行匹配算法,当数据规模达到226个字符时,可以获得8倍以上的加速比。     

计算机局域网硬件常见故障及维修处理方法

随着网络的逐步普及,局域网的建设走向信息化已成为必然选择,它不仅为现代化教学,综合化信息管理,办公自动化等一系列应用提供基本操作平台而且能提供多种服务。本人联系工作实践,阐述局域网常见故障和处理的方法,并针对计算机局域网常见硬件故障,提出相应处理对策。     

基于COM的数据自动化处理技术在工程变形监测中的应用

现代施工技术需要及时、准确的报告出对工程建筑物关键部位的变形情况。传统的依赖办公自动化软件对监测数据进行简单的处理,已经满足不了实际需求。本文以具有特殊结构的合肥渡江战役纪念馆主体工程为应用背景,阐述了如何针对具体的监测项目,基于COM技术及office对象模型,二次开发生成数据处理程序,采用本高级数据自动处理方案,极大的提高了变形监测数据处理的效率。对类似工程的数据处理,具有很好的借鉴意义。     

基于图像处理的划线激光笔系统设计

论文设计一种划线激光笔系统,通过USB摄像头拍摄投影屏,编制软件采集图像并进行处理,检测出激光笔在屏幕上的亮点位置,在屏幕上绘制亮点的轨迹线,使教师能够操作激光笔在投影屏上指示时能够留下痕迹,起到较好的指示作用。系统设计红光和绿光组合的激光笔,在摄像头前设置可通过绿光的滤光片,实现激光笔发射绿光时系统划线,而发射红光时则不划线的功能。系统可以增加演讲的交互性,使讲解更加生动。     

提升试验设计与数据处理教学效果的研究与实践

结合试验设计与数据处理教学实践,提出了提升其教学效果的几点体会。认为在本课程的教学中,强调课程学习重要性、激发学生学习热情,以注重实用性,优化教学内容,不断改进教学方法,加强实践教学和计算机技术应用将有利于提升该课程的教学效果。     

石油物探测量数据处理标准化的探讨

当前石油物探测量在数据处理和成果管理方法存在着管理方法不同,测量数据资料存放方式不一,数据成果中缺少测量成果的来源信息,测量成果管理的不规范等问题。实现物探测量数据处理标准化应针对测量数据处理流程,在数据存储、数据处理、成果更新、质量检查和成果提交等方面分别进行规范。