LOW VISION AID FOR OBSERVERS WITH CENTRAL VISION LOSSES

为中央视力丧失的观察者提供低视力辅助设备

• 批准号: 3497163
• 负责人: TERI A LAWTON
• 金额: $ 5万
• 依托单位: NANO TECH SERVICES
• 依托单位国家: 美国
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-04-26 至 1991-10-25
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3497163
• 关键词: computer program /software; human subject; image enhancement; reading; television; vision aid; vision disorders

DESCRIPTION (Investigator's Abstract): The low vision aid developed during this study will provide an electronic device to help visually impaired persons maximize the use of their residual vision, using innovative image enhancement filters that will be available commercially as an option on current closed-circuit TV (CCTV) readers. These filters enhance text by optimizing the low vision observer's remaining contrast sensitivity, and render the text in shades of gray that are more easily perceived than black and white. The objective of Phase I is to determine whether the improved reading performance of low vision observers found when viewing static words presented one at a time in the middle of the screen, extends to continuous text that is scrolled across the screen at different speeds, as used on CCTVs. The specific aims of Phase I are to: 1) Implement the software needed to: generate text using the same format used on CCTVs and 2) Measure whether the reading rates of low vision observers are improved when reading moving continuous filtered text, when compared to unfiltered text having the same magnification. When the feasibility of this project is shown at the end of Phase I, then Phase II funding will be used to conduct all the research needed to determine the optimum hardware configuration for building a commercially available cost-effective device to significantly improve the reading performance of low vision observers.

描述（研究者的摘要）：在 这项研究将提供一种电子设备，以帮助视力障碍 人使用创新图像最大化其残留视力的使用 增强过滤器将在商业上作为选择 当前的闭路电视（CCTV）读取器。 这些过滤器通过 优化低视力观察者的剩余对比灵敏度，并 用灰色阴影渲染文字，比黑色更容易感知 和白色。 第一阶段的目的是确定是否有改进 查看静态单词时发现的低视力观察者的阅读表现 在屏幕中间一次呈现一个，延伸至连续 以不同的速度在屏幕上滚动的文本，如 CCTV。 第一阶段的具体目的是：1）实施软件 需要：使用CCTV上使用的相同格式生成文本和2） 测量低视力观察者的阅读率是否提高 与未经过滤的文本相比，阅读移动连续过滤的文本 具有相同的放大倍率。 当这个项目的可行性是 在第一阶段结束时显示，然后将使用第二阶段资金来进行 确定最佳硬件配置所需的所有研究 建造商业可用的成本效益设备，以显着 提高低视力观察者的阅读性能。