PATENT CLAIM ANALYSIS

Application Number: 15885874
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-05
Patent Classification: ["348", "148000"]

Abstract:
The present invention provides a method for fast, robust and efficient BA pipeline (SfM) for wide area motion imagery (WAMI). The invention can, without applying direct outliers filtering (e.g. RANSAC) or re-estimation of the camera parameters (e.g. essential matrix estimation) efficiently refine noisy camera parameters in very short amounts of time. The method is highly robust owing to its adaptivity with the persistency factor of each track. The present invention highly suitable for sequential aerial imagery, particularly for WAMI, where camera parameters are available from onboard sensors.

Claim (Index 2):
The system of  claim 1 , wherein said computer programming instructions further configure said computer system to\n acquire camera metadata, said metadata comprising camera position metadata and camera orientation metadata; extract interest points from each said image frame in said sequence; compare descriptors of said extracted interest points for each two successive image frames; match said descriptors so as to generate feature tracks; generate a persistency factor for each said feature track as a function of said feature track's length; compute a set of statistics for all said persistency factors when all feature tracks have been generated; compute a triangulation based on said camera metadata and said feature tracks so as to generate estimated initial 3D interest points of said image; weight residuals generated from back projection error using said persistency factors; compute an error function incorporating said weighted residuals, so as to reduce the effect of outlier noise; and compute a bundle adjustment incorporating said weighted residuals and said camera metadata, so as to optimize said camera pose refinement and said estimated initial 3D interest points.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 88.0
- Lexical Diversity: 1.52174
- Patent Class: 348.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14982030', '15038325', '14690104', '13858040', '14184766']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5496911601585904
- 35 USC 102 Novelty (BERT): 0.6076502359959192
- Combined Prediction Score: 0.5554870677423234
- Mean Citation Score: 265.166734
- Max Citation Score: 558.53046
- Similarity Product: 462.0088369493222

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