平面广告设计中的“视觉冲击力”

"视觉冲击力"不是简单意义上的视觉印象和视觉效果,它所揭示的是对平面广告设计作品的审美过程、设计目的、设计信息等进行积极思考、判断和接收的动力。     

Multi-Camera Human Activity Monitoring

With the proliferation of security cameras, the approach taken to monitoring and placement of these cameras is critical. This paper presents original work in the area of multiple camera human activity monitoring. First, a system is presented that tracks pedestrians across a scene of interest and recognizes a set of human activities. Next, a framework is developed for the placement of multiple cameras to observe a scene. This framework was originally used in a limited X, Y, pan formulation but is extended to include height (Z) and tilt. Finally, an active dual-camera system for task recognition at multiple resolutions is developed and tested. All of these systems are tested under real-world conditions, and are shown to produce usable results. This work has been supported by the NSF through grants #IIS-0219863, #CNS-0224363, #CNS-0324864, #IIP-0443945, #CNS-0420836, #IIP-0726109, and #CNS-0708344.     

Inferences about the location of food in capuchin monkeys (Cebus apella) in two sensory modalities.

The authors tested the ability of capuchin monkeys (Cebus apella) to make inferences about hidden food. In Experiment 1, we showed the content of 2 boxes, 1 of which was baited (visual condition, VC) or we shook both boxes producing noise from the baited box (auditory condition, AC). Seven subjects (out of 8) were above chance in the VC, whereas only 1 was above chance in AC. During treatment, by manipulating empty and filled objects subjects experienced the relation between noise and content. When tested again, 7 capuchins were above chance in the VC and 3 in AC. In Experiment 2, we gave visual or auditory information only about the empty box and, consequently, successful choice implied inferential reasoning. All subjects (out of 4) were above chance in the VC, and 2 in the AC. Control tests ruled out the possibility that success resulted from simply avoiding the shaken noiseless box, or from the use of arbitrary auditory information. Similar to apes (Call, 2004), capuchins were capable of inferential reasoning. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A large-time-stepping scheme for balance equations

A well-balanced, large-time-stepping method for conservation laws with source terms is presented. The numerical method is based on a local reformulation of the balance law as a conservation law with a discontinuous flux function, and the approximate solution of this equation by a front tracking method. This yields an unconditionally stable method which is particularly well suited to calculate stationary states. The viability of this approach is demonstrated by several numerical examples. KHK has been supported in part by an Outstanding Young Investigators Award from the Research Council of Norway.     

Mura‐type effect on human‐vision inspection

Abstract— Currently, the image quality of LCDs is examined subjectively by humans. There are no consistent rules for examining Mura, so it is necessary to develop an acceptable Mura standard between users and manufacturers. A Mura simulation experiment can establish the relationship between human visual perception and Mura phenomenon. The present study used several types and sizes of real Mura and subjects with different experiences to develop a starting point for examining Mura by the systematical approach of human factors. The objective in this study is to search the relationships between Mura characteristics and visual contrast thresholds. From the experimental results, Mura type, Mura size, and Mura location were the most important factors in the visual contrast threshold. A domestic Just Noticeable Difference model of the LCD industry was also constructed that could be used as an inspection criterion for LCD industry.     

The Skeptical Explorer: A Multiple-Hypothesis Approach to Visual Modeling and Exploration

The primary intent of this work is to present a method for sequentially associating three-dimensional surface measurements acquired by an autonomous exploration agent with models that describe those surfaces. Traditional multiple-viewpoint registration approaches are concerned only with finding the transformation that maps data points to a chosen global frame. Given a parts-based object representation, and assuming that the view correspondence can be found, the problem of associating the registered data with the correct part models still needs to be solved. While traditional approaches are content to group segmented data sets that geometrically overlap one another with the same part, there are cases where this causes ambiguous situations. This paper addresses the model-data association problem as it applies to three-dimensional dynamic object modeling. By tracking the state of part models across subsequent views, we wish to identify possible events that explain model-data association ambiguities and represent them in a Bayesian framework. The model-data association problem is therefore relaxed to allow multiple interpretations of the object's structure, each being assigned a probability. Rather than making a decision at every iteration about an ambiguous mapping, we look to the future for the information needed to disambiguate it. Experimental results are presented to illustrate the effectiveness of the approach.     

Visual comparators of propeller surface roughness

Visualization has played an effective role in supporting many engineering applications. In this paper, standard reference surfaces taken from actual propellers were measured using a surface profiling system. The measurement data were then preprocessed and exported to a graphics workstation. For each sample surface, points were selected and input into a geometric modeling and interrogation system, PRAXITELES. These points were then approximated by a non-uniform rational B-spline (NURBS) which is the standard format for representing surfaces in modem geometric modeling systems. The surfaces were visualized and can be used as standard visual comparators to assess the roughness of measured manufactured and in-service propeller surfaces.     

局部遮阴下基于改进AVOA的光伏多峰MPPT控制

光伏阵列受部分遮阴影响，其功率-电压特性曲线呈多峰状，导致传统最大功率点跟踪（MPPT）算法失效，因此提出了一种改进的非洲秃鹫优化算法（AVOA）运用于光伏的MPPT控制。首先，引入Tent混沌映射使种群位置更具多样性，避免过早收敛。然后，优化算法在探索和开发阶段的更新策略，减少计算力的浪费，提高寻优速率。最后，在MATLAB 2022b/Simulink环境下，应用所提算法对不同辐照情况的3组工况进行仿真。实验结果表明，在多峰MPPT控制中，该算法具有寻优效率高、收敛速度快等特点，能有效地提升复杂遮阴环境下光伏能源的利用率。     

论视觉识别系统中辅助图形的设计

辅助图形的设计是对标准图形在使用时的有益补充和延伸,目地是强化受众者对企业形象多角度、多层次的感受。在传递信息的读图时代,怎样在纷繁复杂中找到最佳的受众渠道,为企业形象添光彩,辅助图形的作用不可估量。