PATENT CLAIM ANALYSIS

Application Number: 15946146
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-11
Patent Classification: ["348", "135000"]

Abstract:
Method and system for calculating a height map of a surface of an object from an image stack in scanning optical  2.5 D profiling of the surface by an optical system, a focal plane is scanned at different height positions with respect to the object surface. An image is captured at each height position of the focal plane to form the image stack. The scanning of the focal plane comprises long range sensing and short range sensing a displacement of the focal plane for sensing low and high spatial frequency components. The height position of the focal plane is estimated by combining the low and high spatial frequency components. A height position of each image in the image stack is calculated, based on the estimated height position of each respective focal plane. The images of the image stack are interpolated to equidistant height positions for obtaining a corrected image stack.

Claim (Index 1):
A method for calculating a height map of a surface of an object from an image stack in scanning optical 2.5D profiling of the surface by an optical system, the method comprising:\n scanning a focal plane at different height positions with respect to the object surface; capturing an image at each height position of the focal plane to form the image stack, wherein the scanning of the focal plane comprises:\n long range sensing a displacement of the focal plane for sensing low spatial frequency components; \n short range sensing a displacement of the focal plane for sensing high spatial frequency components; and \n estimating the height position of the focal plane by combining the low spatial frequency components and the high spatial frequency components; \n calculating a height position of each image in the image stack, based on the estimated height position of each respective focal plane; interpolating the images of the image stack to equidistant height positions for obtaining a corrected image stack; and calculating the height map of the surface of the object from the corrected image stack.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 91.0
- Lexical Diversity: 2.43077
- Patent Class: 348.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12630925', '12691803', '13151436', '14194931', '13745738']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.603656462622335
- 35 USC 102 Novelty (BERT): 0.4794967064851144
- Combined Prediction Score: 0.5912404870086129
- Mean Citation Score: 165.27046399999998
- Max Citation Score: 170.1948
- Similarity Product: 118.22228661096096

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test