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1. WO2020196087 - DISTANCE MEASUREMENT DEVICE AND IMAGE GENERATION METHOD

Publication Number WO/2020/196087
Publication Date 01.10.2020
International Application No. PCT/JP2020/011668
International Filing Date 17.03.2020
IPC
G01C 3/06 2006.01
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
3Measuring distances in line of sight; Optical rangefinders
02Details
06Use of electric means to obtain final indication
G01S 7/486 2020.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
483Details of pulse systems
486Receivers
G01S 17/89 2020.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems, specially adapted for specific applications
89for mapping or imaging
Applicants
  • パナソニックIPマネジメント株式会社 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. [JP]/[JP]
Inventors
  • 齋藤 繁 SAITOU, Shigeru
  • 香山 信三 KOYAMA, Shinzo
  • 石井 基範 ISHII, Motonori
  • 竹本 征人 TAKEMOTO, Masato
Agents
  • 新居 広守 NII, Hiromori
  • 寺谷 英作 TERATANI, Eisaku
  • 道坂 伸一 MICHISAKA, Shinichi
Priority Data
2019-06098327.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) DISTANCE MEASUREMENT DEVICE AND IMAGE GENERATION METHOD
(FR) DISPOSITIF DE MESURE DE DISTANCE ET PROCÉDÉ DE GÉNÉRATION D'IMAGE
(JA) 距離測定装置および画像生成方法
Abstract
(EN)
This distance measurement device (1) comprises an imaging unit (2) for imaging N (where N is an integer greater than or equal to 2) division images corresponding to N division distances that a distance measurement range has been divided into and a distance image generation unit (8) for generating a distance image from the N division images. The distance image generation unit (8) identifies, from among the division pixels composing the N division images, the division pixels having the maximum signal value from among the N division pixels at the same pixel position and determines that the distance value for a pixel position in the distance image is the value indicating the division distance of the division pixel having the maximum signal value if the maximum signal value is greater than or equal to a threshold or is outside of the measurement range if the maximum signal value is less than the threshold.
(FR)
L'invention concerne un dispositif de mesure de distance (1) comprenant une unité d'imagerie (2) destinée à mettre en image N (où N est un nombre entier supérieur ou égal à 2) images de division correspondant à N distances de division en lesquelles a été divisée une plage de mesure de distance et une unité de génération d'image de distance (8) destinée à générer une image de distance à partir des N images de division. L'unité de génération d'image de distance (8) identifie, parmi les pixels de division composant les N images de division, les pixels de division ayant la valeur de signal maximale parmi les N pixels de division à la même position de pixel et détermine que la valeur de distance associée à une position de pixel dans l'image de distance est la valeur indiquant la distance de division du pixel de division ayant la valeur de signal maximale si la valeur de signal maximale est supérieure ou égale à un seuil ou est en dehors de la plage de mesure si la valeur de signal maximale est inférieure au seuil.
(JA)
距離測定装置(1)は、測距範囲を分割したN(Nは2以上の整数)個の区分距離に対応するN個の区分画像を撮像する撮像部(2)と、前記N個の区分画像から距離画像を生成する距離画像生成部(8)と、を備え、前記距離画像生成部(8)は、前記N個の区分画像を構成する区分画素のうち同じ画素位置にあるN個の区分画素から最大の信号値を有する区分画素を判定し、前記最大の信号値がしきい値以上であるとき、前記最大の信号値の区分画素の区分距離を示す値を、前記距離画像における当該画素位置の距離値として決定し、前記最大の信号値が前記しきい値より小さいとき、前記測距範囲外とする。
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