Simulation of 3D Reconstruction of Conical Calibration Targets
In this study, new calibration targets based on conical 3D shapes are proposed for possible replacing the popularly used planer calibration target which has been always implement for determine the camera parameters of camera-pairs. To understand the performance of the propose calibration targets. Three different conical calibrations targets (CCTs), hemispherical, cylindrical and the conical calibration targets, were considered for briefly simulating before manufacturing those targets for future application. In this study, the spatial data associated with three different CCTs were generated and mapping to the image planes of cameras located at three different locations of a planer circle by using pin-hole imaging model. Then the generated images were used to determine the camera parameters. The determined parameters of different camera-pairs were used to reconstruct the spatial data of the generated CCTs. All reconstructed spatial data were then merged into a single data set, the departures of the reconstructed spatial data with respect to the generated ones were considered as the index for evaluating performance of the CCTs. In this study, the simulated results showed the departure of the spatial data associated to all three CCTs are small which indicates that all three proposed CCTs can be used for calibrating the camera-pairs.
KeywordsConic calibration targets Camera calibration Reconstruction Simulation Stereo-camera-pair
The partial financial support provided by the Office of Naval Research (ONR), United States (Award Number: N62909-16-1-2064) is greatly appreciated.
- 4.Huang, C.H., Chen, Y.H., Wang, W.C.: Conical calibration target used for calibrating image acquisition device. TW patent, Publication number: I576652. Publication date: 2017.04.01, Original Assignee: National Applied Research LaboratoriesGoogle Scholar
- 5.Huang, C.H., Chen, Y.H., Wang, W.C.: Conic section calibration object for calibrating image capturing device. US patent, Publication number: US9762897 B2. Publication date: 2017.09.12, Original Assignee: National Applied Research LaboratoriesGoogle Scholar
- 6.Hwang, C.H., Wang, W.C., Chen, Y.H.: Camera calibration and 3D surface reconstruction for circular DIC multi-camera system. In: 2013 International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), Paper No. 876913, 8p, Singapore (2013)Google Scholar