Berkeley — What if computer screens had glasses instead of the people staring at the monitors? That concept is not too far afield from technology being developed by UC Berkeley computer and vision scientists.
The researchers are developing computer algorithms to compensate for an individual’s visual impairment, and creating vision-correcting displays that enable users to see text and images clearly without wearing eyeglasses or contact lenses. The technology could potentially help hundreds of millions of people who currently need corrective lenses to use their smartphones, tablets and computers. One common problem, for example, is presbyopia, a type of farsightedness in which the ability to focus on nearby objects is gradually diminished as the aging eyes’ lenses lose elasticity.
更重要的是，显示屏可以有一天的帮助人们具有更复杂的视觉问题，称为高阶像差，这是电影科学和视觉科学的UC Berkeley教授的Eyeglasses不能纠正，这是电脑科学和视觉科学教授，以及验光教授。
“我们现在生活在一个展示普遍存在的世界中，并且能够与显示器进行互动，”这是一个领导这个项目的Barsky说。“高阶畸变的人通常具有角膜形状的不规则性，并且这种不规则形状使得具有将适合的隐形眼镜非常困难。在某些情况下，这可能是持有某些工作的障碍，因为许多工人需要将屏幕视为他们工作的一部分。这项研究可以改变他们的生活，我对这种潜力充满热情。“
使用计算纠正愿景
The UC Berkeley researchers teamed up with Gordon Wetzstein and Ramesh Raskar, colleagues at the Massachusetts Institute of Technology, to develop their latest prototype of a vision-correcting display. The setup adds a printed pinhole screen sandwiched between two layers of clear plastic to an iPod display to enhance image sharpness. The tiny pinholes are 75 micrometers each and spaced 390 micrometers apart.
The research team will present this computational light field display on Aug. 12 at the International Conference and Exhibition on Computer Graphics and Interactive Techniques, or SIGGRAPH, in Vancouver, Canada.
“这个项目的重要性是，我们使用计算的求解愿景，而不是依赖光学措施，而不是纠正您的愿景，”傅涌黄，傅涌黄，他们在这个项目上工作，作为他的计算机科学博士学位的一部分。中国伯克利的论文。“这是一个非常不同的纠正，它是非侵入性的。”
在UC Berkeley开发的算法，通过根据用户的特定视觉损伤调整从图像中的单个像素中的每个光的每个光的强度来调节。在一个名为Deconvolulation的过程中，光通过针孔阵列以这样的方式通过，使得用户将感知锐利图像。
“我们的技术扭曲了图像，使得当预期用户看屏幕时，图像将显得锐利到该特定的观众，”Barsky说。“但如果别人要看图像，那就看起来很糟糕。”
在实验中，研究人员显示了模糊的图像，该图像被设置为模拟一个远视的人。使用新的原型显示时，模糊图像通过相机镜头出现锐利。
This latest approach improves upon earlier versions of vision-correcting displays that resulted in low-contrast images. The new display combines light field display optics with novel algorithms.
Huang, now a software engineer at Microsoft Corp. in Seattle, noted that the research prototype could easily be developed into a thin screen protector, and that continued improvements in eye-tracking technology would make it easier for the displays to adapt to the position of the user’s head position.
“In the future, we also hope to extend this application to multi-way correction on a shared display, so users with different visual problems can view the same screen and see a sharp image,” said Huang.
For more information, visitwww.newscenter.berkeley.edu。
提起：M2M（机器到机器）
