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1. WO2020137185 - DISTANCE MEASURING DEVICE AND DISTANCE MEASURING METHOD

Publication Number WO/2020/137185
Publication Date 02.07.2020
International Application No. PCT/JP2019/043827
International Filing Date 08.11.2019
IPC
G01C 3/06 2006.1
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
H04N 5/225 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment
225Television cameras
H04N 5/232 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment
225Television cameras
232Devices for controlling television cameras, e.g. remote control
CPC
G01C 3/06
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
H04N 5/225
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
H04N 5/232
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
232Devices for controlling television cameras, e.g. remote control ; ; Control of cameras comprising an electronic image sensor;
Applicants
  • 株式会社日立製作所 HITACHI, LTD. [JP]/[JP]
Inventors
  • 山口 啓太 YAMAGUCHI Keita
  • 中村 悠介 NAKAMURA Yusuke
Agents
  • 特許業務法人 湘洋内外特許事務所 SHOYO INTELLECTUAL PROPERTY FIRM
Priority Data
2018-24287526.12.2018JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) DISTANCE MEASURING DEVICE AND DISTANCE MEASURING METHOD
(FR) DISPOSITIF DE MESURE DE DISTANCE ET PROCÉDÉ DE MESURE DE DISTANCE
(JA) 距離計測装置および距離計測方法
Abstract
(EN) The present invention generates accurate distance information. This distance measurement device includes: an image sensor; a modulator that modulates, on the basis of an imaging pattern, the intensity of light projected onto the image sensor; a complex sensor image generation unit that generates a complex sensor image from a sensor image; an evaluation index array generation unit that generates an evaluation index array on the basis of phase information of the complex sensor image; and a distance information generation unit that generates distance information using the evaluation index array. The evaluation index array generation unit: generates an evaluation pattern which includes a plurality of mutually different development patterns corresponding to focus distances; uses the complex sensor image and the evaluation pattern to generate a plurality of development images; layers the plurality of development images in order of focus distance, starting from the closest distance, to generate a three-dimensional complex information array which includes planar and depth directions; and creates, as an evaluation index array, a three-dimensional array formed by layering a plurality of two-dimensional arrays which have been smoothed in at least one direction of the three dimensions for the complex information array.
(FR) L'invention génère des informations de distance précises. Le dispositif de mesure de distance selon l'invention comprend : un capteur d'image ; un modulateur qui module, sur la base d'un motif d'imagerie, l'intensité de lumière projetée sur le capteur d'image ; une unité de génération d'image de capteur complexe qui génère une image de capteur complexe à partir d'une image de capteur ; une unité de génération de matrice d'indices d'évaluation qui génère une matrice d'indices d'évaluation sur la base d'informations de phase de l'image de capteur complexe ; et une unité de génération d'informations de distance qui génère des informations de distance à l'aide de la matrice d'indices d'évaluation. L'unité de génération de matrice d'indices d'évaluation : génère un motif d'évaluation qui comprend une pluralité de motifs de développement mutuellement différents correspondant à des distances focales ; utilise l'image de capteur complexe et le motif d'évaluation pour générer une pluralité d'images de développement ; dispose en couches la pluralité d'images de développement dans l'ordre de distance focale, en commençant de la distance la plus proche, pour générer une matrice d'informations complexes tridimensionnelles qui comprend des directions plane et de profondeur ; et crée, en tant que matrice d'indices d'évaluation, une matrice tridimensionnelle formée par disposition en couches d'une pluralité de matrices bidimensionnelles qui ont été lissées dans au moins une direction des trois dimensions pour la matrice d'informations complexes.
(JA) 正確な距離情報を生成する。 距離計測装置であって、画像センサと、撮影用パターンに基づき画像センサ上に投影される光の強度を変調する変調器と、センサ画像から複素センサ画像を生成する複素センサ画像生成部と、複素センサ画像の位相情報を基に評価指標配列を生成する評価指標配列生成部と、評価指標配列を用いて距離情報を生成する距離情報生成部と、を有し、評価指標配列生成部は、ピント距離に応じた複数の互いに異なる現像用パターンを含む評価用パターンを生成し、複素センサ画像と評価用パターンとを用いて複数の現像画像を生成し、複数の現像画像をピント距離が近い順に積層させて平面および奥行き方向を有する三次元の複素情報配列を生成し、複素情報配列について三次元の少なくとも一つの方向に平滑化した二次元配列を複数積層させた三次元配列を評価指標配列とする。
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