Automatic calibration of a multi-camera system with limited overlapping fields of view for 3D surgical scene reconstruction.

ABSTRACT:

Purpose

The purpose of this study is to develop an automated and accurate external camera calibration method for multi-camera systems used in 3D surgical scene reconstruction (3D-SSR), eliminating the need for operator intervention or specialized expertise. The method specifically addresses the problem of limited overlapping fields of view caused by significant variations in optical zoom levels and camera locations.

Methods

We contribute a novel, fast, and fully automatic calibration method based on the projection of multi-scale markers (MSMs) using a ceiling-mounted projector. MSMs consist of 2D patterns projected at varying scales, ensuring accurate extraction of well-distributed point correspondences across significantly different viewpoints and zoom levels. Validation is

SUBMITTER: Fluckiger T 

PROVIDER: S-EPMC12929363 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature