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71.
对边扫描边跟踪的认知雷达,目标的空间分布特性是实现对雷达信号控制的重要依据之一。本文介绍了一种基于高斯混合概率假设密度(GM-PHD)滤波算法的目标空间分布感知方法,利用该算法,可同时实现多目标高虚警环境下的目标数目和目标空间位置以及运动状态的估计。该算法实际是一种对标准GM-PHD滤波器的改进算法,能在新生目标强度未知的情况下完成对新生目标的检测跟踪。实验表明该算法不仅能在未知新生目标强度的情况下检测并跟踪新生目标,且在新生目标速度较大的情况下,该算法对新生目标的检测性能优于标准GM-PHD滤波器。 相似文献
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What do architects and students perceive in their design sketches? A protocol analysis 总被引:1,自引:0,他引:1
The present research aims at examining what information architects think of and read off from their own freehand sketches, and at revealing how they perceptually interact with and benefit from sketches. We explored this in a protocol analysis of retrospective reports; each participant worked on an architectural design task while drawing freehand sketches and later reported what she/he had been thinking of during the design task. This research lies within the scope of examinations of why freehand sketches as external representation are essential for crystallizing design ideas in early design processes. 相似文献
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论包装设计的审美心理 总被引:5,自引:4,他引:1
随着市场经济的发展,人们不仅仅满足于物质的生活,开始提升自我的精神生活享受,越来越关注于包装的审美感.通过讨论审美心理学原理、美学原理,结合包装设计的应用分析,研究审美心理在商品包装中的活动过程,从而解析包装设计的审美特点,为促进包装设计契合审美心理的研究而持续发展提供了理论依据. 相似文献
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Previous research on perceiving spatial layout has found that people often exhibit normative biases in their perception of the environment. For instance, slant is typically overestimated and distance is usually underestimated. Surprisingly, however, the perception of height has rarely been studied. The present experiments examined the perception of height when viewed from the top (e.g., looking down) or from the bottom (e.g., looking up). Multiple measures were adapted from previous studies of horizontal extents to assess the perception of height. Across all of the measures, a large, consistent bias was found: Vertical distances were greatly overestimated, especially from the top. Secondary findings suggest that the overestimation of distance and size that occurs when looking down from a high place correlates with reports of trait- and state-level fear of heights, suggesting that height overestimation may be due, in part, to fear. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
77.
Pauker Kristin; Weisbuch Max; Ambady Nalini; Sommers Samuel R.; Adams Reginald B. Jr.; Ivcevic Zorana 《Canadian Metallurgical Quarterly》2009,96(4):795
Exponential increases in multiracial identities, expected over the next century, create a conundrum for perceivers accustomed to classifying people as their own- or other-race. The current research examines how perceivers resolve this dilemma with regard to the own-race bias. The authors hypothesized that perceivers are not motivated to include ambiguous-race individuals in the in-group and therefore have some difficulty remembering these individuals. Both racially ambiguous and other-race faces were misremembered more often than own-race faces (Study 1), though memory for ambiguous faces was improved among perceivers motivated to include biracial individuals in the in-group (Study 2). Racial labels assigned to racially ambiguous faces determined memory for these faces, suggesting that uncertainty provides the motivational context for discounting ambiguous faces in memory (Study 3). Finally, an inclusion motivation fostered cognitive associations between racially ambiguous faces and the in-group. Moreover, the extent to which perceivers associated racially ambiguous faces with the in-group predicted memory for ambiguous faces and accounted for the impact of motivation on memory (Study 4). Thus, memory for biracial individuals seems to involve a flexible person construal process shaped by motivational factors. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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Linkenauger Sally A.; Witt Jessica K.; Stefanucci Jeanine K.; Bakdash Jonathan Z.; Proffitt Dennis R. 《Canadian Metallurgical Quarterly》2009,35(6):1649
Previous research has suggested that perceived distances are scaled by the action capabilities of the body. The present studies showed that when “reachability” is constrained due to a difficult grasp required to pick up an object, perceived distance to the object increases. Participants estimated the distances to tools with handle orientations that made them either easy or difficult to grasp with their dominant and nondominant hands. Right-handed participants perceived tools that were more difficult to grasp to be farther away than tools that were easier to grasp. However, perceived distance did not differ in left-handed participants. These studies suggest that, when reaching toward a target, the distance to that target is scaled in terms of how far one can effectively reach, given the type of reaching posture that is executed. Furthermore, this effect is modulated by handedness. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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人类智能是在与环境交互中进化的,因而如何实现智能体与环境的自主交互是推进智能演化的关键。环境自主交互是一项涉及计算机图形学、计算机视觉和机器人等多个学科领域的研究课题,引起广泛的关注和探究,学术界已围绕这一热点研究问题从不同视角和技术维度开展了一系列研究工作。本文着眼于室内场景拟人交互,全面梳理数字人与机器人在室内环境下学习完成特定交互任务过程中需要涉及的仿真交互平台、场景交互数据和交互生成算法 3 方面基本要素的研究进展。在仿真交互环境搭建方面,本文梳理了仿真环境涉及的仿真技术和研究进展,并对代表性的拟人交互仿真平台进行了介绍;在场景交互数据构建方面,本文从场景交互感知数据集、场景交互运动数据集以及交互数据规模的高效扩充 3 方面对国内外研究现状进行了详细介绍;在拟人交互感知与生成方面,本文介绍了以交互为导向的场景可供性分析的相关工作,并以交互生成为线索,分别梳理了数字人—场景交互生成、机器人—场景交互生成的相关工作。基于对国内外相关工作的梳理和讨论,最后从交互仿真、交互数据、交互感知和交互生成 4 个方面,总结了该领域目前仍面临的挑战,并对未来的发展趋势进行了展望。 相似文献