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 9):
The method according to  claim 8 , wherein the determining a ratio Ro of a quantity of the feature point that is not on the plane to a quantity of all the feature points comprises:\n calculating a distance from each feature point to the plane by using the following formula: Di = ( Xi \u00d7 nx + Yi \u00d7 ny + Zi \u00d7 nz - 1 ) nx 2 + ny 2 + nz 2 determining that a feature point having Di being greater than a fourth preset threshold is the feature point that is not on the plane; and calculating the ratio Ro of the quantity No of the feature point that is not on the plane to the quantity N of all the feature points:\n Ro=No/N,  \n wherein Xi, Yi, Zi is a world coordinate of an i th  feature point relative to a photographing apparatus of the aircraft, i=1, . . . , N, N is a quantity of the feature point in the image, and (nx, ny, nz) is a normal vector of the plane that is fit to all the feature points in the image.

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): 0.4439495089044773
- 35 USC 102 Novelty (BERT): 0.4989261840135141
- Combined Prediction Score: 0.449447176415381
- Mean Citation Score: 174.832782
- Max Citation Score: 191.72652
- Similarity Product: 111.8301011841917

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