MONITORING DEVICE, DETERMINATION DEVICE, MONITORING SYSTEM, AND MONITORING METHOD

• Main Author: YOKOYAMA MASARU
• Format: Patent
• Language: English; Japanese
• Published: 08.02.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; TESTING

To provide a monitoring device, a determination device, a monitoring system, and a monitoring method for quickly detecting an abnormality of an object in a manhole while suppressing an increase in labor and cost.SOLUTION: A monitoring device includes: an imaging unit 21 that captures an image of a target area illuminated by illumination in a manhole; and a determination unit 22 that determines whether an object in the target area is discolored or not. The determination unit 22 includes: a discoloration determination unit 33 for calculating RGB color values of the captured image captured by the imaging unit 21, and determining the type of discoloration abnormality on the basis of the combination of the calculated values; and a foreign matter determination unit 32 for determining foreign matter adhering to a housing that accommodates the imaging unit 21, and excludes an area where the foreign matter exists in the captured image from the target for determination of the discoloration abnormality.SELECTED DRAWING: Figure 3 【課題】マンホール内における物体の異常を、手間およびコストの増加を抑え、かつ迅速に検知する監視装置、判定装置、監視システム及び監視方法を提供する。【解決手段】監視装置は、マンホール内における、照明により照らされた対象領域を撮像する撮像部２１と、対象領域における物体の変色以上を判定する判定部２２と、を有する。判定部２２は、撮像部２１が撮像した撮像画像のＲＧＢの各色の値を算出し、算出した値の組み合わせに基づいて変色異常の種類を判定する変色判定部３３と、撮像部２１を収容する筐体に付着した異物を判定する異物判定部３２とを有し、撮像画像において異物が存在する領域を、変色異常の判定の対象から除外する。【選択図】図３