Mobile Object Control Using Bicycle Marks for Road Type Recognition

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Solution Overview

Problem

Existing motor-driven vehicle traveling support devices fail to accurately recognize the type of road in a region of interest, leading to inadequate control based on road type.

Innovation Solution

A control device for mobile objects that utilizes a road type recognition unit to identify whether a region of interest is a roadway or a sidewalk based on bicycle marks, signs, and other road features, and adjusts control settings accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a motor-driven vehicle traveling support device uses basic image recognition to detect road directions, then the device can detect travelable directions, but it cannot accurately recognize road types (roadway vs. sidewalk) in the region of interest

Engineering Contradiction:
Improveroad type recognition accuracyVSAvoidrecognition system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The recognition system is segmented into multiple specialized units: a bicycle mark recognition unit, a road width measurement unit, and a road type determination unit. Each unit handles a specific aspect of road type recognition, dividing the complex task into manageable components that can be processed independently and systematically

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from two-dimensional image recognition to three-dimensional spatial understanding by measuring road widths and analyzing the vertical relationships between bicycle marks, curbstones, and road surfaces. This dimensional expansion enables accurate differentiation between roadways and sidewalks based on spatial characteristics

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If the system uses multiple recognition criteria (bicycle mark direction, road width, curbstones) to improve road type recognition accuracy, then recognition precision increases, but processing complexity and computational load increase

Engineering Contradiction:
Improveroad type recognition accuracyVSAvoidprocessing efficiency
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The system performs preliminary recognition of bicycle marks and their directions before proceeding to road type determination. By pre-identifying key features such as bicycle mark orientations and their positions relative to curbstones, the system prepares structured data that facilitates faster and more accurate road type classification in subsequent processing stages

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The road type determination unit receives feedback from multiple sources including bicycle mark recognition results, road width measurements, and curbstone detection data. This multi-source feedback mechanism allows the system to continuously refine its road type judgments and adjust its processing focus based on the confidence levels and consistency of different recognition criteria

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS20250214581A1Control device for mobile object, control method for mobile object, and storage medium
Publication Date: 2025.07.03 HONDA MOTOR CO LTD
  • US20250214581A1 patent drawing
  • US20250214581A1 patent drawing
  • US20250214581A1 patent drawing

AI summary

A control device for a mobile object includes: a road type recognition unit configured to recognize whether a region of interest is a roadway or a sidewalk based on a bicycle mark used for guiding a passage of a bicycle and detected by a detection device that detects an external situation of a mobile object that is able to move in both the roadway and the sidewalk; and a control unit configured to control the mobile object based on a result of the recognition of the road type recognition unit.