ROCHADE: Robust Checkerboard Advanced Detection for Camera Calibration
نویسندگان
چکیده
We present a new checkerboard detection algorithm which is able to detect checkerboards at extreme poses, or checkerboards which are highly distorted due to lens distortion even on low-resolution images. On the detected pattern we apply a surface fitting based subpixel refinement specifically tailored for checkerboard X-junctions. Finally, we investigate how the accuracy of a checkerboard detector affects the overall calibration result in multi-camera setups. The proposed method is evaluated on real images captured with different camera models to show its wide applicability. Quantitative comparisons to OpenCV’s checkerboard detector show that the proposed method detects up to 80% more checkerboards and detects corner points more accurately, even under strong perspective distortion as often present in wide baseline stereo
منابع مشابه
X-Corner Detection for Camera Calibration Using Saddle Points
This paper discusses a corner detection algorithm for camera calibration. Calibration is a necessary step in many computer vision and image processing applications. Robust corner detection for an image of a checkerboard is required to determine intrinsic and extrinsic parameters. In this paper, an algorithm for fully automatic and robust X-corner detection is presented. Checkerboard corner poin...
متن کاملRobust Recognition of Checkerboard Pattern for Deformable Surface Matching in Multiple Views
Checkerboard pattern can be used in many computer vision areas by matching the pattern as a surface, such as camera calibration, stereo vision, projector-camera system and even surface reconstruction. However, most existing checkerboard pattern recognition methods only work in planar and fine illuminating circumstances. A robust recognition method for checkerboard pattern is proposed in this pa...
متن کاملWhich pattern? Biasing aspects of planar calibration patterns and detection methods
This paper provides a comparative study on the use of planar patterns in the generation of control points for camera calibration. This is an important but often neglected aspect in camera calibration. Two popular checkerboard and circular dot patterns are each examined with two detection strategies for invariance to the potential bias from projective transformations and nonlinear distortions. I...
متن کاملCheckerboard Tracker for Camera Calibration
The checkerboard extraction process is an important pre-preprocessing step in camera calibration. This project attempts to implement the checkerboard extraction processes using methods learned from EE368. This includes the isolation of the checkerboard using morphological operations. The benefit of the approach is that it is efficient since morphological operations can be implemented efficientl...
متن کامل