PATENT CLAIM ANALYSIS

Application Number: 15881367
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["351", "208000"]

Abstract:
A computer-implemented method detects the position of a corneal vertex of an eye from a frontal image of a head and a lateral image of the head. The front and lateral images are calibrated to one another, and the position of the corneal vertex in space is determined from the frontal image and the lateral image with a geometric position determination.

Claim (Index 14):
A computer-implemented method for detecting a position of a corneal vertex, the method comprising:\n recording a frontal image of a head and a lateral image of the head, calibrating the frontal image and the lateral image to one another, determining a position of a corneal vertex in space from the frontal image and the lateral image with a geometric position determination, the geometric position determination including:\n performing a correction calculation of the position of the corneal vertex, \n detecting a position of a reflection point of a flash, \n producing the flash when recording the frontal image and the lateral image and the position of the corneal vertex in space is determined to the first approximation as a position of the reflection point of the flash on the cornea, and performing at least one of: \n calculating the position of the corneal vertex in the horizontal direction proceeding from the reflection point by adding \u0394x=+/\u2212r*sin (\u00bd*(arccos z/a+arctan x/(z\u2212v))) to the x-coordinate, wherein r denotes an empirical value or an actual value for the corneal radius, a denotes the distance between the optical center of the frontal camera recording the frontal image and the reflection point, x and z denote the x- and z-coordinates of the reflection point in a coordinate system with the origin at the optical center of the frontal camera, wherein the viewing direction of the frontal camera corresponds to the z-direction and the x-direction is horizontally orthogonal to the z-direction and, when observed in the z-direction, points to the right, and v denotes the distance between the light source producing the flash and the optical center of the frontal camera in the z-direction; or \n calculating the position of the corneal vertex in the y-direction proceeding from the reflection point by adding \u0394y=+/\u2212r*sin \u00bd*(arctan l/(d\u2212v)), wherein r denotes an empirical value or an actual value for the corneal radius, d denotes the distance between the optical center of the frontal camera and the reflection point in the z-direction, v denotes the distance between the light source producing the flash and the optical center of the frontal camera in the z-direction and l denotes the distance between the light source and the optical center of the frontal camera in the y-direction, wherein the y-direction is orthogonal to the x-direction and to the z-direction and points upward in space.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 86.0
- Lexical Diversity: 1.82857
- Patent Class: 351.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['11883046', '12524325', '11724189', '12524310', '15274151']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5697530750558879
- 35 USC 102 Novelty (BERT): 0.4818810619660383
- Combined Prediction Score: 0.560965873746903
- Mean Citation Score: 209.270278
- Max Citation Score: 232.12968
- Similarity Product: 168.9514275766182

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test