PATENT CLAIM ANALYSIS

Application Number: 16311590
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-07
Patent Classification: ["073", "148000"]

Abstract:
The present invention belongs to the technical field of movement monitoring, and provides a video monitoring apparatus and method for an operating state of a wave maker. When the operating state of the wave maker is monitored, an image collected by a camera is subjected to mark point detection and a central position is computed. Then, the position of each mark point is tracked in a dynamic video; and the operating condition of each wave paddle is assessed according to the motion state of the mark point. In the present invention, operating monitoring of the wave paddle is independent of a wave making control system, and the operating condition of the wave paddle is monitored in real time through a non-contact image measurement mode. The wave paddle is identified through LED; the positions of the mark points in each frame image are acquired through image perspective correction and binarization analysis; and the operating state of the wave paddle is judged according to the contrast among the mark points at different times and different spatial positions, thereby effectively reducing an error rate of the wave making control system for the operating monitoring of the wave paddle and greatly increasing experimental efficiency of simulating wave making.

Claim (Index 2):
A video monitoring method for an operating state of a wave maker, comprising the following steps:\n step A: fixing the position of the camera after installing the red round LEDs on the wave paddles so that the movement of the wave paddles and the optical axis of the camera form a certain angle; and adjusting an object distance and an aperture of a camera lens so that the images achieved are all very clear; step B: performing system calibration during first operation; controlling the driving control circuit board by a PC to illuminate all the red round LEDs and simultaneously control the wave paddles to return to the initial position; achieving an image frame on the site by the camera; extracting coordinates P a  of all luminous mark points in the initialization state of the wave paddles through an image binarization method; numbering the mark points in an order from near to far; next, controlling the wave paddles to move to a maximum stroke by the PC; grabbing the site image and extracting the coordinates P b  of all the mark points; meanwhile, enabling the positions of the identified mark points to correspond to the numbers of the mark points; forming a line segment P a P a i , i=1, 2, 3 . . . N by two coordinate positions recorded under each number, where N is the quantity of the mark points; because the movement of each wave paddle is limited to the line segment, P a P b i  is called as a stroke line segment; additionally, forming a straight line l a  by a point set P a  of the start positions and forming a straight line l b  by a point set P b  of the end positions; setting a region between l a  and l b  as an analysis region W ROI ; next, correcting the coordinates of the mark points in the image using perspective transformation P\u2032=M 3\u00d73 P so that two straight lines formed by P\u2032 are parallel l\u2032 a //l\u2032 b , i.e., new motion line segments are equal to each other |P\u2032 a P\u2032 b 1 =|P\u2032 a P\u2032 b 2 |= . . . =|P\u2032 a P\u2032 b N |; meanwhile, recording a perspective transformation matrix M 3\u00d73 ; P being a set of the coordinates of the mark points on l a  and l b ; P\u2032 being a coordinate set of corrected points and M 3\u00d73  being the perspective transformation matrix; setting a two-dimensional coordinate plane with x axis coinciding with l\u2032 a  and y axis coinciding with P\u2032 a P\u2032 b i ; and controlling the LED driving circuit board to close all the mark lamps by the PC to enter an analysis waiting state after completing the above operation; step C: illuminating all the red round LEDs while starting a wave making procedure; and setting the camera to enter a uniformly-spaced consecutive collection mode; step D: performing binarization analysis on the current image; extracting the positions of the mark points in the region W ROI ; and modifying the positions of the mark points using the perspective transformation matrix M 3\u00d73 ; step E: contrasting the position of the current mark point with the previous position; recording the mark point of the number for the first time if the position is not changed; contrasting the position of each mark point at the current time with the position of an adjacent mark point along an axial direction; computing a position difference between the positions; and recording the mark point of the number for the second time if the difference between adjacent positions is greater than a set threshold T; step F: considering the wave paddle of the number to have a failure if a certain mark point is recorded continuously twice; and also considering the wave paddles of the number successively adjacent thereto and only recorded for the first time to have a failure; step G: displaying an alarm by the computer when the failure occurs; meanwhile closing the wave making procedure; then controlling the driving control circuit board to close all the mark lamps except the wave paddles with failure; and if no failure occurs, repeating steps D-E until a wave making experiment is completed, and closing all the mark lamps and stopping the monitoring procedure.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 98.0
- Lexical Diversity: 2.44944
- Patent Class: 73.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16308999', '12584309', '10500697', '13797957', '10597394']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6209867734409618
- 35 USC 102 Novelty (BERT): 0.5199592622821687
- Combined Prediction Score: 0.6108840223250825
- Mean Citation Score: 156.357714
- Max Citation Score: 278.07608
- Similarity Product: 174.36493259616853

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