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We propose a personal identification method based on fingerpsilas outline. In this paper first, we extract the fingerpsilas outline from a hand image acquired by the image acquisition system. Secondly we normalize the fingerpsilas outline by expanding the horizontal and vertical components into the KL expansion. The resulting fingerpsilas outline has a rotation invariant feature. Thirdly we expand...
This paper proposes a simple technique for camera calibration under assumption that a calibration pattern is on world coordinate system. The proposed method consists of two steps. In the first step, the intermediate parameters, lens distortion coefficients, principal point and the distances between sensors are computed by an iterative linear method. Then, the camera parameters are determined from...
This paper proposes a method of camera calibration and the influence of principal point on camera parameters. The camera parameters are represented in terms of a set of intermediate parameters. The intermediate parameters and lens distortion coefficients are iteratively computed. The image coordinates are rectified on each cycle of iteration. Once the iteration is terminated, the initial parameters...
This paper proposes an algorithm to determine the camera parameters for coplanar camera calibration. The proposed method requires only one image to compute the camera parameters. The intermediate parameters defined in terms of the camera parameters are determined by a linear method. Then, the final intermediate parameters and the lens distortion coefficients are computed iteratively using a nonlinear...
This paper discusses on a realization of FIR system characterizing outline of fingers of a single hand and its application to person identification. First, a hand image is obtained from the image acquisition system. Secondly the normalized outline of the fingers with rotation invariance is extracted from the hand image using KL expansion. Thirdly the horizontal and vertical components of the outline...
This paper discusses a determination method for initial values of coplanar camera calibration parameters. In the conventional methods, it is assumed that the image center is ignored or known in advance. The determination of the initial calibration parameters of image corrupted with quantization noise and lens distortion becomes sometimes unstable under the above assumption. In this paper, a method...
This paper discusses a method to determine initial parameters with noise robustness for coplanar calibration. Most conventional methods are assumed that the image center is known in advance. The determination of initial parameters of image corrupted with quantization noise becomes unstable under the above assumption. In this paper, a method to determine the stable initial parameters of coplanar calibration...
Coplanar camera calibration is the process of determining a set of calibration parameters that describe the mapping between 2D control points and 2D image coordinates. However, the optimal solution for coplanar calibration can be obtained by solving a set of constrained optimization problem. This paper presents a technique to determine the calibration parameters for coplanar calibration, where a set...
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