From spheres images we have developed a new method for camera calibration in order to calculate with accuracy its intrinsic parameters. We prove an interesting geometric propriety about ellipses extracted from sphere images. Taking into account the lens geometrical distortion introduced by the optical sy...
Camera Calibration From Images of Spheres. IEEE Trans. Pattern Anal. Mach. Intell. 2007, 29, 499-502.Zhang H,Wong K K,Zhang G.Camera calibration from images of spheres. IEEE Transactions on Pattern Analysis and Machine Intelligence . 2007...
CameraCalibrationspheresilhouettesurface of revolution (SORThis paper introduces a novel approach for solving the problem of camera calibration from spheres. By exploiting the relationship between the dual images of spheres and the dual image of the absolute conic (IAC), it is shown that the common...
Camera calibration from spheres images. In European Conference on Computer Vision; Eklundh, J.O., Ed.; Springer: Berlin/Heidelberg, Germany, 2–6 May 1994; Volume 800, Lecture Notes in Computer Science, pp. 447–454. 19. Teramoto, H.; Xu, G. Camera calibration by a sin...
We first describe how omnidirectional images captured by different types of mirrors or lenses can be uniquely mapped to spherical images. Spherical imaging can then be used for calibration, scene analysis, or distributed processing in omnidirectional camera networks. We then present calibration methods ...
In the camera calibration apparatus, a plurality of spheres whose magnitudes and positions in a three-dimensional coordinate system are known are imaged, and from a thus imaged image, magnitudes and positions of the plurality of spheres on the screen are determined. Then, from the magnitudes and...
Image warping converts the calibration problems of transformed images into the calibration problem with highly constrained cameras. In addition, it is possible to determine affine projection matrices from the images without explicit projective reconstruction. We introduce camera motion constraints of the ...
To apply (3),a,handmust be calculated for each point of the calibration square. The value ofafor the position [x,y,z] can be computed from (12) Again, we have the condition (13) to express the coordinates ofQ; substituting into (12), we obtain an expression forawith respect to ...
A camera is to capture an actual image of a target pattern. A calibration device is to render pixels in a synthetic image of the target pattern by tracing rays from the pixels to co
The TUM VI Benchmark [37] consists of 28 sequences captured in 6 different environments. The benchmark provides high dynamic range photometric calibration images with a resolution of 1024\(\times \)1024 and a frame rate of 20 Hz. The IMU measures the acceleration and angular velocity of the...