CRT与LCD技术的视觉刺激显示性能评价

发布时间：2018-02-24 13:33

本文关键词： 液晶显示器阴极射线管显示器韦伯定律视觉刺激器性能测试　出处：《液晶与显示》2017年11期 　论文类型：期刊论文

【摘要】：为了定量评价两种技术在视觉研究实验中的适用性,本文根据文献分析和视觉研究需求设计了显示器性能测试系统与测试流程,对一台阴极射线管(CRT)显示器和两台通用液晶显示器作为视觉刺激显示设备的关键性能进行测试。结合心理物理学理论,特别是韦伯定律,详细地分析和比较了各项测试结果。实验结果显示所有的显示器有不同的Gamma特性,需要进行相应的Gamma校正之后才能线性呈现图像的灰度级;CRT显示器在响应时间上具有绝对优势,但屏幕空间均匀性和独立性较差;相比于CRT显示器,LCD显示器具有较高的亮度和较好的空间均匀性和独立性,但是响应时间偏慢,而且相邻两帧图像之间独立性较差。这些测试结果表明,CRT显示器仍然是高动态特性视觉刺激显示的首选,而LCD显示器可以用于呈现对空间亮度一致性和空间的独立性要求高,但对响应速度要求不高的视觉刺激。
[Abstract]:In order to quantitatively evaluate the applicability of the two techniques in the visual research experiment, this paper designs a display performance test system and test flow according to the requirements of literature analysis and visual research. The key performances of a CRT display and two universal liquid crystal displays as visual stimuli display devices were tested. In combination with psychophysical theory, in particular Weber's law, The experimental results show that all the displays have different Gamma characteristics, and the corresponding Gamma correction is needed before the gray level CRT displays the image linearly, which has an absolute advantage in response time. Compared with CRT display, it has higher brightness and better spatial uniformity and independence, but the response time is slow. These results show that the CRT display is still the first choice for visual stimuli with high dynamic characteristics, while the LCD display can be used to display high spatial luminance consistency and spatial independence. But the visual stimulation with low response speed.
【作者单位】：南方医科大学生物医学工程学院;
【基金】：国家自然科学基金(No.61271154,No.61172033)~~
【分类号】：TN873;TP391.41

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