Title:
DISTANCE MEASUREMENT DEVICE, DISTANCE MEASUREMENT METHOD AND PROGRAM
Document Type and Number:
Japanese Patent JP2017181291
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To detect noise occurring due to effects of sunlight in an image that represents the distance to each measurement point in a distance measurement device, a distance measurement method and a program.SOLUTION: Provided is a distance measurement device for measuring the distance to an object on the basis of the reflected light of a pulsed laser beam that scans in two dimensions, characterized by comprising means for extracting a first area whose area size is less than or equal to a threshold size from among areas of distance measurement points where distance values on an image that represents the distance to each distance measurement point are less than or equal to a first threshold and a difference in the distance values is less than or equal to a second threshold, and means for determining an area group the number of constituent first areas of which is greater than or equal to a given number, among area groups of first areas where the distance on two-dimensional coordinates in the image is less than or equal to a third threshold and a difference in the distance value exceeds a fourth threshold, as a noise area.SELECTED DRAWING: Figure 3
Inventors:
USHIJIMA SATORU
Application Number:
JP2016068559A
Publication Date:
October 05, 2017
Filing Date:
March 30, 2016
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
G01B11/00; G01C3/06; G01S7/487; G01S17/10; G01S17/89; G06T7/60
Domestic Patent References:
| JP2015219120A | 2015-12-07 | |||
| JP2010165183A | 2010-07-29 | |||
| JP2006314061A | 2006-11-16 | |||
| JP2011133258A | 2011-07-07 | |||
| JP2012141265A | 2012-07-26 |
Foreign References:
| WO2011078264A1 | 2011-06-30 | |||
| US20040120549A1 | 2004-06-24 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Takao Kato
Tadahiko Ito
Takao Kato