Rotary Panoramic and Full-Depth-of-Field Imaging System for Pipeline Inspection

Area of Science:

• Engineering
• Robotics
• Imaging Technology

Background:

• Conventional in-pipe imaging struggles with irregular pipelines and unstructured environments.
• Existing methods often lack adaptability and sufficient image quality for detailed inspection.

Purpose of the Study:

• To develop a novel radial rotating full-depth-of-field focusing imaging system.
• To enhance adaptability and imaging quality for irregular pipeline inspection.
• To enable effective acquisition of fine details within pipelines.

Main Methods:

• Proposed a fast full-depth-of-field imaging method driven by depth features.
• Developed a full-depth rotating imaging apparatus with a zoom camera, servo rotation mechanism, and control system.
• Conducted experiments on pipelines with varying depths to validate performance.

Main Results:

• The system acquires pipeline interior depth data and high-definition characterization images.
• Image clarity improved by 75.3% through multi-view angle fusion compared to single frames.
• Achieved signal-to-noise ratio (SNR) of 6.9 dB and peak signal-to-noise ratio (PSNR) of 26.3 dB.

Conclusions:

• The developed system offers high integration, faster imaging, and adaptive capacity for in-pipe inspection.
• Provides an adaptive solution for detecting defects on inner surfaces of irregular pipelines.
• Demonstrates significant potential for practical applications in pipeline maintenance and inspection.