PATENT CLAIM ANALYSIS

Application Number: 16069244
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["348", "047000"]

Abstract:
There are disclosed various methods and apparatuses for calibration of a multi-camera system. In some embodiments of the method a first image captured by a first camera unit of a multi-camera system and a second image captured by a second camera unit of the multi-camera system are obtained. A two-dimensional optical flow between the first camera unit and the second camera unit is determined by using the first image and the second image. The two-dimensional optical flow is converted into a three-dimensional rotation. A parallax component of the three-dimensional rotation is removed by using extrinsic parameters of the first camera unit and the second camera unit. The modified three-dimensional rotations are used to obtain a first error estimate for the first camera unit and a second error estimate for the second camera unit. In some embodiments the apparatus comprises means for implementing the method.

Claim (Index 25):
The apparatus according to  claim 22 , said at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:\n compute three-dimensional direction vectors corresponding to a start and an end location of two-dimensional optical flow vectors; take a cross product between the three-dimensional direction vectors; and use extrinsic parameters of a at least one of the first camera unit or the second camera unit and subtracting a rotation component aligned with or tangential to an epipolar plane to keep the component of the three-dimensional rotation that is about the epipolar line.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 95.0
- Lexical Diversity: 2.69643
- Patent Class: 348.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13213303', '15510737', '14878267', '15970965', '14493959']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6002597594291089
- 35 USC 102 Novelty (BERT): 0.4839935258383204
- Combined Prediction Score: 0.5886331360700301
- Mean Citation Score: 191.136106
- Max Citation Score: 210.5347
- Similarity Product: 171.88001279035805

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