PATENT CLAIM ANALYSIS

Application Number: 15894126
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-06
Patent Classification: ["701", "016000"]

Abstract:
The present invention discloses a landing protection method and apparatus and an aircraft. The method includes: obtaining an image of a landing area; determining a feature point in the image; determining, according to the feature point, whether the landing area is a dangerous landing area; and if yes, controlling the aircraft to suspend landing or controlling the aircraft to fly away from the dangerous landing area. By means of the present invention, whether a landing area is a dangerous landing area may be determined according to an obtained image, so that the landing safety of the aircraft is ensured.

Claim (Index 7):
The method according to  claim 5 , wherein the photographing apparatus is a depth camera incapable of directly obtaining Zi, and the determining the world coordinate of each feature point in the image relative to the photographing apparatus of the aircraft comprises:\n obtaining pixel coordinates xr, yr and xl, yl of a same feature point in two adjacent images; and calculating Zi, Xi and Yi by using the following formula: Zi = fx \u00d7 b ( xl - xr ) Xi = Zi \ue8a0 ( xl - cx ) fx Yi = Zi \ue8a0 ( yl - cy ) fy wherein cx, cy is a coordinate of an optical center of the depth camera, fx, fy are focal lengths of the depth camera on an X axis and a Y axis, and b is a baseline distance of the depth camera.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 88.0
- Lexical Diversity: 2.26531
- Patent Class: 701.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['11808818', '14339220', '14992929', '14906535', '14105759']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4457807562582031
- 35 USC 102 Novelty (BERT): 0.4916389918766252
- Combined Prediction Score: 0.4503665798200453
- Mean Citation Score: 174.832782
- Max Citation Score: 191.72652
- Similarity Product: 121.81175104791642

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