High resolution, programmable aperture light field laparoscope for quantitative depth mapping

Area of Science:

• Medical Imaging
• Optical Engineering
• Surgical Technology

Background:

• Light field imaging offers potential for 3D endoscopes but faces challenges with resolution and depth acquisition in confined surgical spaces.
• Minimally invasive surgery requires high-resolution imaging and accurate depth perception for effective guidance.

Purpose of the Study:

• To introduce a novel programmable aperture light field imaging technique for laparoscopy.
• To overcome the resolution-depth tradeoff inherent in current 3D endoscopic imaging.
• To enable on-demand 3D information capture and depth map computation during surgery.

Main Methods:

• Implementation of a hybrid imaging system combining a conventional laparoscope with a programmable aperture.
• Utilizing the programmable aperture to capture light field data without compromising native sensor resolution.
• Developing algorithms for computing depth maps from the captured light field data for surgical guidance.

Main Results:

• Demonstration of a working prototype system for laparoscopic 3D imaging.
• Preservation of the camera sensor's native high spatial resolution while acquiring 3D information.
• Capability to compute depth maps for enhanced surgical visualization.

Conclusions:

• Programmable aperture light field imaging is a viable approach for high-resolution 3D laparoscopy.
• This technique addresses key limitations of existing 3D endoscopic systems.
• The developed system offers potential for improved surgical guidance and outcomes in minimally invasive procedures.