• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Imaging Science and Technology >Measurements of the Modulation Transfer Function of Image Displays
【24h】

Measurements of the Modulation Transfer Function of Image Displays

机译：图像显示器调制传递函数的测量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Measurements of the Modulation Transfer Function (MTF) of image displays are often required for objective image quality assessments, but are difficult to carry out due to the need for specialized apparatus. This article presents a simple method for the measurement of the MTF of a sample CRT display system which involves the use of a still digital camera for the acquisition of displayed test targets. Measurements are carried out using, first, the sine wave method, where a number of artificial sine wave images of discrete spatial frequency and constant modulation are captured from a close distance. Fourier techniques are employed to extract the amplitude of the display signal from the resulting macroimages. In a second phase, displayed artificial step edges are captured, and the ISO 12333 SFR (Spatial Frequency Response) Slanted Edge plug-in is used for automatic edge analysis. The display MTF, in both cases, is cascaded from the closed-loop system MTF. The two measuring techniques produced matching results, indicating that under controlled test conditions accurate measurements of the display MTF can be achieved with the use of relatively simple equipment.
机译：图像显示的调制传递函数（MTF）的测量通常是客观图像质量评估所必需的，但由于需要专用设备而难以执行。本文介绍了一种简单的方法，用于测量示例CRT显示系统的MTF，该方法涉及使用静态数码相机来获取显示的测试目标。首先使用正弦波方法进行测量，其中从近距离捕获许多离散的空间频率和恒定调制的人造正弦波图像。使用傅立叶技术从所得的宏观图像中提取显示信号的幅度。在第二阶段，捕获显示的人工台阶边缘，并将ISO 12333 SFR（空间频率响应）倾斜边缘插件用于自动边缘分析。在这两种情况下，显示MTF都是从闭环系统MTF级联的。两种测量技术产生了匹配的结果，表明在受控的测试条件下，可以通过使用相对简单的设备来实现对显示器MTF的精确测量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号