POSITION SPECIFYING SYSTEM, POSITION SPECIFYING METHOD AND PROGRAM
PROBLEM TO BE SOLVED: To provide a position specifying system and the like that can simplify a structure of a ceiling portion and also can prevent complication of intensity modulation for transmitting information showing a position to a mobile object.SOLUTION: Multiple LED illumination light sources...
Gespeichert in:
Hauptverfasser: | , , , , , , , |
---|---|
Format: | Patent |
Sprache: | eng ; jpn |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a position specifying system and the like that can simplify a structure of a ceiling portion and also can prevent complication of intensity modulation for transmitting information showing a position to a mobile object.SOLUTION: Multiple LED illumination light sources P are provided on a ceiling surface C. The inside of the ceiling surface C is divided into multiple virtual regions and each virtual region is divided into multiple sub virtual regions, according to each position of the LED illumination light sources P. The sub virtual regions in each virtual region differ in shape and size. A modulator 12 applies intensity modulation appropriate for the virtual regions to each illumination light emitted from the LED illumination light sources P. A high-frame-rate image sensor 21 and a high-resolution image sensor 22 image four LED illumination light sources P located above a forklift A. A computer specifies the virtual regions from an imaging result of the high-frame-rate image sensor 21 and specifies the sub virtual regions from an imaging result of the high-resolution image sensor 22.SELECTED DRAWING: Figure 1
【課題】天井部分の構成の簡素化を図ることができ、かつ位置を表す情報を移動体に伝えるための強度変調の煩雑化を防止することができる位置特定システム等を提供する。【解決手段】複数のLED照明光源Pが天井面Cに配置される。LED照明光源Pの位置によって、天井面C内が複数の仮想領域に区分され、各々の仮想領域が複数の小仮想領域に区分される。各仮想領域内で小仮想領域の形状及び大きさが異なる。変調器12は、LED照明光源Pから出射される照明光に、仮想領域に応じた強度変調を施す。高フレームレートイメージセンサ21と高解像度イメージセンサ22が、フォークリフトAの上方に位置する4つのLED照明光源Pを撮像する。コンピュータが、高フレームレートイメージセンサ21の撮像結果から仮想領域を特定し、高解像度イメージセンサ22の撮像結果から小仮想領域を特定する。【選択図】図1 |
---|