PATENT CLAIM ANALYSIS

Application Number: 15970965
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["382", "205000"]

Abstract:
The present disclosure relates to a high precision method, model, and apparatus for calibrating the intrinsic camera parameter values of one or more intrinsic parameters of a camera. The intrinsic parameters include focal lengths, skew, optical center, and radial distortion coefficients. The practical implementation of the solution consists of a camera capturing several images of a planar calibration pattern from different viewpoints, and a computer implemented processing pipeline. The solution does not require additional human input and is robust to misdetection of the calibration pattern in some of the images.

Claim (Index 14):
A computing unit configured for automatic camera calibration of an image capture device, the computing unit comprising:\n memory storing a plurality of computer-executable instructions; one or more processors that execute the computer-executable instructions, the computer-executable instructions causing the one or more processors to:\n obtain a plurality of images of a planar calibration pattern captured by the image capture device from different respective angles; \n detect a plurality of distinguishable features depicted in the planar calibration pattern for each obtained image; \n generate a lattice graph having a plurality of nodes based on the distinguishable features detected from each image; \n repeatedly calibrate a plurality of intrinsic camera parameter values corresponding to one or more intrinsic camera parameters of the image capture device based on two or more distinguishable features detected in two or more of the images and the lattice graphs corresponding to the two or more images, wherein the calibrating is performed for two or more different combinations of the images; \n select, one or more intrinsic camera parameter values from the plurality of intrinsic camera parameter values, wherein the one or more intrinsic camera parameter values are selected to minimize a robust estimator of a reprojection error over the obtained plurality of images; and \n refine calibration of the plurality of intrinsic camera parameters based on the one or more selected intrinsic camera parameters.

Metadata:
- Claim Count in Document: 65.0
- Percentile: 93.0
- Lexical Diversity: 1.5873
- Patent Class: 382.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14286165', '15635120', '15710702', '15801692', '14865211']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.324057743599691
- 35 USC 102 Novelty (BERT): 0.472746012473619
- Combined Prediction Score: 0.3389265704870837
- Mean Citation Score: 187.46679
- Max Citation Score: 197.2603
- Similarity Product: 159.06763738547562

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