A compact active stereovision system with dynamic reconfiguration for endoscopy or colonoscopy applications

Area of Science:

• Medical Imaging
• Optical Engineering
• Robotics

Background:

• Endoscopic procedures require high-resolution 3D imaging for accurate diagnosis.
• Current endoscopic devices have limitations in dynamic viewpoint adjustment for optimal 3D reconstruction.
• Active stereovision offers a promising approach for 3D shape capture in confined spaces.

Purpose of the Study:

• To present a novel endoscopic device concept utilizing a compact optical probe for active stereovision-based 3D shape capture.
• To highlight the probe's unique capability for dynamic switching between two distinct points of view.
• To demonstrate the enhanced 3D information capture and improved result quality enabled by the dual-view system.

Main Methods:

• Development of a compact optical probe with a dynamic dual-view switching mechanism.
• Implementation of active stereovision principles for 3D shape measurement.
• Design of reconstruction algorithms tailored for the dual-view endoscopic system.
• Experimental validation using a coin surface and a phantom colon model.

Main Results:

• The endoscopic probe successfully captures 3D shape information using active stereovision.
• The dynamic switching between two viewpoints (under 25 ms) allows for selection of optimal angles for enhanced 3D data.
• Experimental reconstructions of a coin surface demonstrated the system's effectiveness.
• Initial measurements on a phantom colon showed promising results for in-vivo applications.

Conclusions:

• The novel endoscopic device with a dynamically switchable dual-view optical probe offers improved 3D shape capture capabilities.
• This technology has the potential to enhance diagnostic accuracy in endoscopic procedures.
• Future work will focus on device miniaturization and integration into clinical colonoscopes.