首页>
外国专利>
DETERMINING THE OPTIMAL POSITIONING OF OPHTHALMIC DEVICES THROUGH THE USE OF IMAGE PROCESSING AND AUTOFOKING TECHNIQUES
DETERMINING THE OPTIMAL POSITIONING OF OPHTHALMIC DEVICES THROUGH THE USE OF IMAGE PROCESSING AND AUTOFOKING TECHNIQUES
展开▼
机译:通过使用图像处理和自动伪造技术确定眼科设备的最佳位置
展开▼
页面导航
摘要
著录项
相似文献
摘要
A system or method of positioning an ophthalmic device relative to an eye is provided. The method first obtains a series of images of an eye. In these series of images, the distance between the ophthalmic device and the eye is varied while the region of the eye image remains substantially the same. It is possible then to process these images to determine the high frequency content associated with each image. By comparing the high frequency content associated with each image, it is possible to determine which image has the largest amount of high frequency content. The high frequency content is maximized when the image is the sharpest. An optimally focused image will have the largest amount of high frequency content. By examining the high frequency content associate with the series of images is impossible to adjust the relative position and distance between the eye and the ophthalmic device to the distance associated with the image having the largest amount of high frequency content (i.e., optimally focused).
展开▼