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31.
介绍视觉技术在YP19装封箱机的装箱过程中的应用,简述视觉技术系统的基本组成、工作原理及软件设计。 相似文献
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33.
Weige Lu Haisong Xu M. Ronnier Luo 《Journal of the Society for Information Display》2012,20(5):259-265
Abstract— A psychophysical experiment was carried out to assess the perceptual contrast on a large‐sized liquid‐crystal display (LCD) under nine phases of viewing conditions. Based on the results, six contrast models employing different color attributes or the index of just‐noticeable difference (JND) were developed. Their performances were also tested by the visual data of the nine phases, which indicated that the model CQ employing CIECAM02 brightness gives the best performance in predicting visual data under different viewing conditions among those models. A preprocessing step was also proposed to utilize the contrast model CQ conveniently in the practical contrast evaluation of LCDs. 相似文献
34.
The effectiveness of an active shutter-glasses stereoscopic display (SD) and a passive polarised SD was evaluated in a live robot-teleoperation task and a simulated indirect-vision driving task in various terrains. Overall, participants completed their tasks significantly faster with the SDs in three-dimensional (3D) mode than with the SDs in the baseline 2D mode. They also navigated more accurately with the SDs in 3D mode. When the effectiveness of the two types of SDs was examined separately, results showed that the active shutter-glasses SD resulted in faster responses and task completion times than the passive polarised SD, though most of the differences failed to reach statistical significance. Perceived workload when interacting with the two SD systems did not differ significantly between the active versus passive display types or between the 3D and 2D modes of operation; however, participants reported more severe discomfort after interacting with the passive polarised SD. 相似文献
35.
Mickaël Causse Roland Alonso François Vachon Robert Parise Jean-Pierre Orliaguet Sébastien Tremblay 《Ergonomics》2014,57(11):1616-1627
This study aims to determine whether indirect touch device can be used to interact with graphical objects displayed on another screen in an air traffic control (ATC) context. The introduction of such a device likely requires an adaptation of the sensory-motor system. The operator has to simultaneously perform movements on the horizontal plane while assessing them on the vertical plane. Thirty-six right-handed participants performed movement training with either constant or variable practice and with or without visual feedback of the displacement of their actions. Participants then performed a test phase without visual feedback. Performance improved in both practice conditions, but accuracy was higher with visual feedback. During the test phase, movement time was longer for those who had practiced with feedback, suggesting an element of dependency. However, this ‘cost’ of feedback did not extend to movement accuracy. Finally, participants who had received variable training performed better in the test phase, but accuracy was still unsatisfactory. We conclude that continuous visual feedback on the stylus position is necessary if tablets are to be introduced in ATC. 相似文献
36.
严诗琴 《数码设计:surface》2014,(11):120-122
"火桶"是南方传统的御寒器物,它具有造型简单,取材方便,功能实用多样的特点,凝聚了民间朴素造物的思想。同时,火桶所具有着深厚的人文特点和文化内涵。文章以黔东南镇远地区民间火桶为例,分析其形态、结构、功能及人机关系等内容,探究民间造物的设计巧思。 相似文献
37.
李化来 《数码设计:surface》2014,(11):68-70
一座城市形象的塑造与这座城市的文化有关,当然,也与其一贯表现出现的形象有关。一座城市形象的形成是基于外地人对这座城市的直观上的感受,这就是视觉文化理论的作用。安徽城市形象的塑造基于其视觉文化的形成,如何传播安徽城市形象,以使得安徽在人们眼中拥有较为完美的形象也需要视觉文化理论的支持。 相似文献
38.
提出了一种基于可视可擦除水印和数字指纹的多媒体安全分发方案.利用可视水印提供预览视频,支持用户获得授权后的可视水印擦除,伴随擦除过程同时完成用户指纹的嵌入. 相似文献
39.
Huan Deng Qiong‐Hua Wang Cheng‐Gao Luo Chun‐Ling Liu Chen Li 《Journal of the Society for Information Display》2014,22(3):158-162
In this paper, we analyze the visual fatigue of integral imaging three‐dimensional (3D) display by studying the accommodation and convergence when viewing the integral imaging 3D images. The theoretical analyses show that there is no inconsistency between the accommodation and convergence distances, which means that the integral imaging 3D display has no visual fatigue. Experiments are implemented, and the results finally demonstrate the rationality of the theoretical analyses. These analyses can be quite beneficial for researchers to better understand the performances and promote the practical applications of the integral imaging 3D display. 相似文献
40.
Soo‐kyung Shin Myung‐jin Jun Hyungki Hong 《Journal of the Society for Information Display》2014,22(2):122-128
In stereoscopic images, the crossing point of the viewing directions of the two eyes determines the perceived depth. Assuming that accommodation is affected by the positions of the crossing point, the effect of crossing point on minimum angle of resolution (MAR) was investigated. For 40 participants, MAR was measured by two‐alternative forced choice where Snellen optotype E of up and down directions were used as two kinds of stimuli. As the crossing point of the viewing direction of the left and right eyes moves farther from the sample display, the ability to identify the direction of letter E decreases at the optotype of the same line thickness. The change of MAR shows linear trends with respect to the optical power change that are the reciprocal of the distance from the participant to the crossing points located out of screen and on screen. 相似文献