Title:
IMAGE ANALYSIS SYSTEM, IMAGE ANALYSIS METHOD AND IMAGE ANALYSIS PROGRAM
Document Type and Number:
Japanese Patent JP2021067673
Kind Code:
A
Abstract:
To provide a reception method of a GNSS antenna in which highly accurate positioning is performed in a shorter time.SOLUTION: An image analysis system includes: a photographing camera for acquiring a sky moving image at a first point; a terminal device which acquires a sky moving image from the photographing camera and also acquires a frame after a lapse of a predetermined time from the start of the sky moving image as a sky image; and an image analysis device for acquiring the sky image from the terminal device, extracting an empty part included in the sky moving image by performing filtering processing on the sky image, and calculating an index value for evaluating a reception state of a GNSS antenna for receiving a signal from the GNSS. Thus, the reception state of the GNSS antenna can be evaluated in a shorter time.SELECTED DRAWING: Figure 13
Inventors:
ODA YOHEI
MURAKAMI MUTSUMI
HANAI SHOTA
YOKOTA TOMONORI
OSADA YUKIHITO
MURAKAMI MUTSUMI
HANAI SHOTA
YOKOTA TOMONORI
OSADA YUKIHITO
Application Number:
JP2020148535A
Publication Date:
April 30, 2021
Filing Date:
September 03, 2020
Export Citation:
Assignee:
SOFTBANK CORP
ENABLER LTD
ENABLER LTD
International Classes:
G01S19/28; G01S19/43; G06T7/12
Domestic Patent References:
| JP2001159137A | 2001-06-12 | |||
| JP2018194792A | 2018-12-06 | |||
| JP2019027799A | 2019-02-21 | |||
| JP2018124198A | 2018-08-09 | |||
| JP2007003287A | 2007-01-11 | |||
| JP2011064523A | 2011-03-31 |
Foreign References:
| US20140185940A1 | 2014-07-03 |
Other References:
斎藤真幸: "“５．誤差とＰＤＯＰ”", エレクトロニクスライフ, vol. Number 697, JPN6020001052, 1 September 1990 (1990-09-01), pages 155 - 159, ISSN: 0004513636
坂井丈泰: "“１．２ ＧＰＳ衛星”", ＧＰＳのための実用プログラミング, vol. 第１版, JPN6020001055, 30 January 2007 (2007-01-30), pages 5 - 10, ISSN: 0004513637
坂井丈泰: "“１．２ ＧＰＳ衛星”", ＧＰＳのための実用プログラミング, vol. 第１版, JPN6020001055, 30 January 2007 (2007-01-30), pages 5 - 10, ISSN: 0004513637
Attorney, Agent or Firm:
Sakai International Patent Office