|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||351/212 ; 351/247|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 9 인용 특허 : 0|
The present invention describes a technique and apparatus for finding spots in an image with substantial noise making it difficult to identify without specialized noise suppression algorithms. In the context of determining corneal shape, as an example of the technique, the reflections of point light sources in or on the cornea have long played a diagnostic role. The image analysis technique described applies the tools of mathematical morphology and prior information about the shape of illumination patterns to remove noise and isolate the points of intere...
An ophthalmic diagnostic instrument for determining the shape of the cornea, comprising, an objective lens as an optical element of the instrument, on or symmetrically about an optical axis of the instrument, means for projecting a pattern of discrete separated point light sources and forming a real image of the pattern of point light sources at a position located between the interior of the objective lens and the eye, means for expanding the region of coverage on the cornea by using the objective lens as a field lens for the pattern image, means for sel...