PATENT CLAIM ANALYSIS

Application Number: 15750618
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-01
Patent Classification: ["348", "159000"]

Abstract:
In a method for calibration of a stereo camera ( 1 ) comprising two cameras ( 2, 3 ) arranged in a distance along a first direction (x) and mechanically attached to a common structure, rectification functions mapping raw image coordinates to rectified coordinates are provided. Recalibration is based on images of a scene captured by the stereo camera ( 1 ) affixed in an observation position, the recalibration yielding correction functions mapping rectified coordinates to corrected coordinates. Recalibration is based on matching objects comprised in images of the captured scene obtained by the two cameras ( 2, 3 ). The stereo camera ( 1 ) is affixed in a fixed relationship with a planar surface ( 4 ), with a known distance and angle between the stereo camera ( 1 ) and the surface ( 4 ), and objects are matched in the recalibration that belong to the surface ( 4 ), wherein a disparity caused by the known distance is exploited when determining the correction functions. Exploiting the additional information with respect to the surface ( 4 ), the determination of the correction functions may be greatly improved. In particular, the inventive method allows for employing general correction functions, and no modelling of the calibration errors is required.

Claim (Index 12):
The method as recited in  claim 1 , wherein the correction functions are obtained by regression analysis, optimizing an agreement between coordinates of the matched objects in an image obtained by a first of the two cameras with coordinates of the matched objects obtained from applying the correction functions to the coordinates of the matched objects in an image obtained by a second of the two cameras.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 88.0
- Lexical Diversity: 2.32653
- Patent Class: 348.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14990245', '12305835', '10839560', '14089300', '11677324']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5963742042017156
- 35 USC 102 Novelty (BERT): 0.4841788536995644
- Combined Prediction Score: 0.5851546691515006
- Mean Citation Score: 177.797826
- Max Citation Score: 190.66684
- Similarity Product: 145.77910006580353

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

Dataset: test