PATENT CLAIM ANALYSIS

Application Number: 15914059
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["348", "148000"]

Abstract:
A method for calibrating a camera of a vehicular vision system includes providing a camera and an image processor at the vehicle. A monoview noncoplanar three dimensional calibration pattern distributed on a semi-sphere is determined via processing of image data captured by the camera. Responsive to determination of the monoview noncoplanar three dimensional calibration pattern distributed on the semi-sphere, extrinsic parameters of the camera and intrinsic parameters of the camera are estimated. The system performs at least one of (i) a linear refinement of the estimated extrinsic parameters and intrinsic parameters and (ii) a non-linear refinement of the estimated extrinsic parameters and intrinsic parameters. Responsive to processing by the image processor of image data captured by the camera, the camera is calibrated at least in part by using the determined monoview noncoplanar three dimensional semi-spherical calibration pattern.

Claim (Index 11):
A method for calibrating a camera of a vehicular vision system, said method comprising:\n providing a camera at a vehicle so as to have a field of view exterior of the vehicle; wherein the camera comprises a fish eye lens; wherein the camera comprises a pixelated imaging array having a plurality of photosensing elements; providing an image processor at the vehicle, wherein the image processor is operable to process image data captured by the camera; capturing image data via the camera; transferring image data captured by the camera to an electronic control unit of the vehicle, wherein the electronic control unit comprises the image processor; processing image data captured by the camera; determining, at least in part via processing of image data captured by the camera, a monoview noncoplanar three dimensional calibration pattern distributed on a semi-sphere; responsive to determination of the monoview noncoplanar three dimensional calibration pattern distributed on the semi-sphere, estimating extrinsic parameters of the camera and estimating intrinsic parameters of the camera; performing at least one of (i) a linear refinement of the estimated extrinsic parameters and intrinsic parameters and (ii) a non-linear refinement of the estimated extrinsic parameters and intrinsic parameters; responsive to processing by the image processor of image data captured by the camera, calibrating the camera at least in part by using a Taylor model and the determined monoview noncoplanar three dimensional semi-spherical calibration pattern; and wherein values of distortion polynomial coefficients for the Taylor model are estimated using three dimensional calibration points distributed on the semi-sphere.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 90.0
- Lexical Diversity: 2.42623
- Patent Class: 348.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14996571', '14921865', '15721098', '15710702', '13483565']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5810245241974842
- 35 USC 102 Novelty (BERT): 0.5314706110671208
- Combined Prediction Score: 0.5760691328844478
- Mean Citation Score: 179.96815399999997
- Max Citation Score: 255.26314
- Similarity Product: 206.18919351345767

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