Morris Tim, Blenkhorn Paul, Crossey Luke, Ngo Quang, Ross Martin, Werner David, Wong Christina
School of Informatics, The University of Manchester, Manchester, M60 1QD, UK.
IEEE Trans Neural Syst Rehabil Eng. 2006 Dec;14(4):492-500. doi: 10.1109/TNSRE.2006.881538.
Many domestic appliances and much office equipment is controlled using a keypad and a small digital display. Programming such devices is problematical for the blind and visually handicapped. In this paper, we describe a device that may be used to read the displays on these devices. The device is designed to accept a description of the display being read, which specifies the types and locations of elements of the display. Images are captured using a handheld webcam. Images are processed to remove the distortions due to the camera orientation. The elements of the screen are interpreted and a suitable audio output is generated. In suitably illuminated scenes, the display data is interpreted correctly in approximately 90% of the cases investigated.
许多家用电器和办公设备都通过键盘和小型数字显示屏进行控制。对于盲人和视力障碍者来说，对这些设备进行编程是个难题。在本文中，我们描述了一种可用于读取这些设备显示屏信息的装置。该装置旨在接受对所读取显示屏的描述，该描述指定了显示屏元素的类型和位置。使用手持网络摄像头捕获图像。对图像进行处理以消除因相机方向导致的失真。对屏幕元素进行解读并生成合适的音频输出。在光照条件适宜的场景中，在所调查的大约90%的情况下，显示屏数据都能被正确解读。
