Forward monitoring device, forward monitoring system, and forward monitoring method

The forward monitoring device reduces processing time and load by selecting appropriate regions of interest based on train speed and rail detection, enhancing obstacle detection efficiency and accuracy in driverless train operations.

WO2026063064A1PCT designated stage Publication Date: 2026-03-26HITACHI LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-07-30
Publication Date
2026-03-26

AI Technical Summary

Technical Problem

Existing image processing systems for train obstacle detection in driverless operations face high computational load and processing time issues, especially when multiple areas of interest need to be processed, which can lead to delays in obstacle detection and response, given the higher speeds and longer braking distances of trains compared to automobiles.

Method used

A forward monitoring device that includes a rail detection unit, a cropping unit, and a region of interest selection unit to process images from a camera mounted on a train, reducing processing time by selecting appropriate regions of interest based on train speed and rail detection results, and optionally using stereo vision for enhanced accuracy.

Benefits of technology

The solution enables efficient obstacle detection with reduced processing time and load, maintaining a consistent frame rate while ensuring accurate detection of objects in the train's path, even at high speeds.

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Abstract

The purpose of the present invention is to provide a forward monitoring device, a forward monitoring system, and a forward monitoring method capable of reducing processing time while appropriately performing forward monitoring processing. A forward monitoring device (100) that detects an object (102b) on the basis of a captured image (102) acquired by a camera mounted on a train comprises: a rail detection unit (110) that detects, from the captured image (102), a rail (102d) on which the train travels; a crop processing unit (120) that acquires, from the captured image (102), a plurality of image regions around the rail in front of the train as region-of-interest candidates (121); and a region-of-interest processing unit (130) that selects, from among the region-of-interest candidates (121) input from the crop processing unit (120), a region of interest (131) on the basis of the speed of the train and a rail detection result.
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Citation Information

Patent Citations

  • System for detecting object and method for detecting object

    JP2023034917A

  • Systems and methods for machine learning enhanced railway condition monitoring, assessment and prediction

    US20240083478A1