Cited 2 time in webofscience Cited 4 time in scopus

Perspective pinhole model with planar source for augmented reality surgical navigation based on C-arm imaging

Title
Perspective pinhole model with planar source for augmented reality surgical navigation based on C-arm imaging
Authors
Ha, HogunJeon, SangseoLee, SeongpungChoi, HyunseokHong, Jaesung
DGIST Authors
Ha, Hogun; Jeon, Sangseo; Lee, Seongpung; Choi, Hyunseok; Hong, Jaesung
Issue Date
2018-10
Citation
Computer-Assisted Radiology and Surgery, 13(10), 1671-1682
Type
Article
Article Type
Article
Author Keywords
Augmented realityCalibrationMedical imagingRadiographySurgical navigation
Keywords
CAMERA CALIBRATIONGEOMETRIC CALIBRATIONDISTORTION CORRECTIONACCURACYPLACEMENT
ISSN
1861-6410
Abstract
Purpose: For augmented reality surgical navigation based on C-arm imaging, accuracy of the overlaid augmented reality onto the X-ray image is imperative. However, overlay displacement is generated when a conventional pinhole model describing a geometric relationship of a normal camera is adopted for C-arm calibration. Thus, a modified model for C-arm calibration is proposed to reduce this displacement, which is essential for accurate surgical navigation. Method: Based on the analysis of displacement pattern generated for three-dimensional objects, we assumed that displacement originated by moving the X-ray source position according to the depth. In the proposed method, X-ray source movement was modeled as variable intrinsic parameters and represented in the pinhole model by replacing the point source with a planar source. Results: The improvement which represents a reduced displacement was verified by comparing overlay accuracy for augmented reality surgical navigation between the conventional and proposed methods. The proposed method achieved more accurate overlay on the X-ray image in spatial position as well as depth of the object volume. Conclusion: We validated that intrinsic parameters that describe the source position were dependent on depth for a three-dimensional object and showed that displacement can be reduced and become independent of depth by using the proposed planar source model. © 2018, CARS.
URI
http://hdl.handle.net/20.500.11750/9379
DOI
10.1007/s11548-018-1823-6
Publisher
Springer Verlag
Related Researcher
  • Author Hong, Jaesung Surgical Robotics & Augmented Reality Lab
  • Research Interests Surgical Navigation; Surgical Robot; Medical Imaging; 영상 유도 수술 로봇; 수술 내비게이션
Files:
There are no files associated with this item.
Collection:
Department of Robotics EngineeringETC1. Journal Articles
Department of Robotics EngineeringSurgical Robotics & Augmented Reality Lab1. Journal Articles


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