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Results 1 - 10
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309,912
Estimating Physical Camera Parameters For
, 2004
"... To achieve this evolution into the 3D world, not only the video data itself, but also meta-data about the recoding setup is required, specifically including camera calibration information. Descriptors for storing camera parameters like the rotation angles and focal length have already been proposed ..."
Abstract
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To achieve this evolution into the 3D world, not only the video data itself, but also meta-data about the recoding setup is required, specifically including camera calibration information. Descriptors for storing camera parameters like the rotation angles and focal length have already been proposed
Self-calibration and metric reconstruction in spite of varying and unknown internal camera parameters
- INTERNATIONAL JOURNAL OF COMPUTER VISION
, 1999
"... In this paper the theoretical and practical feasibility of self-calibration in the presence of varying intrinsic camera parameters is under investigation. The paper’s main contribution is to propose a self-calibration method which efficiently deals with all kinds of constraints on the intrinsic came ..."
Abstract
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Cited by 192 (13 self)
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In this paper the theoretical and practical feasibility of self-calibration in the presence of varying intrinsic camera parameters is under investigation. The paper’s main contribution is to propose a self-calibration method which efficiently deals with all kinds of constraints on the intrinsic
Nonlinear Refinement of Camera Parameters using
- In: Proc. MVA
, 2002
"... We present an approach for nonlinear optimization of the parameters of an endoscopic camera mounted on a surgery robot. The goal is to generate a depth map for each image in order to enhance the quality of medical light fields. The pose information provided by the robot is used as an initialization, ..."
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We present an approach for nonlinear optimization of the parameters of an endoscopic camera mounted on a surgery robot. The goal is to generate a depth map for each image in order to enhance the quality of medical light fields. The pose information provided by the robot is used as an initialization
Parallel Depth Recovery by Changing Camera Parameters
, 1992
"... A new method is described for recovering the distance of objects in a scene from images formed by lenses. The recovery is based on measuring the change in the scene's image due to a known change in the three intrinsic camera parameters: (i) distance between the lens and the image detector, (ii) ..."
Abstract
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Cited by 86 (14 self)
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A new method is described for recovering the distance of objects in a scene from images formed by lenses. The recovery is based on measuring the change in the scene's image due to a known change in the three intrinsic camera parameters: (i) distance between the lens and the image detector, (ii
Detecting and Handling Unreliable Points for Camera Parameter Estimation
- Int’l J. Computer Vision
, 2008
"... Abstract The popularly used DLT method sometimes fails to give reliable camera parameter estimation. It is therefore important to detect the unreliability and provide the corre-sponding solutions. Based on a complete framework of in-variance for six points, we construct two evaluation func-tions to ..."
Abstract
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Cited by 3 (0 self)
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Abstract The popularly used DLT method sometimes fails to give reliable camera parameter estimation. It is therefore important to detect the unreliability and provide the corre-sponding solutions. Based on a complete framework of in-variance for six points, we construct two evaluation func
On Computing the perspective transformation matrix and camera parameters
- British Machine Vision Conference
, 1993
"... Camera calibration often entails the computation of the perspective transformation matrix. Conventionally, the matrix has been calculated by the standard linear least squares technique. Recently, Faugeras and Toscani have criticised the conventional approach for producing unsatisfactory, even " ..."
Abstract
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Cited by 3 (3 self)
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of view. In fact, the latter is shown to be superior both in noise robustness and in computational cost. The paper also reports a method to resolve the possible sign ambiguities in the camera parameters computed by existing algorithms. 1
Flexible camera calibration by viewing a plane from unknown orientations
, 1999
"... We propose a flexible new technique to easily calibrate a camera. It only requires the camera to observe a planar pattern shown at a few (at least two) different orientations. Either the camera or the planar pattern can be freely moved. The motion need not be known. Radial lens distortion is modeled ..."
Abstract
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Cited by 512 (7 self)
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We propose a flexible new technique to easily calibrate a camera. It only requires the camera to observe a planar pattern shown at a few (at least two) different orientations. Either the camera or the planar pattern can be freely moved. The motion need not be known. Radial lens distortion
Parallel Depth Recovery by Changing Camera Parameters
"... A new method is described for recovering the distance of objects in a scene from images formed by lenses. The recovery is based on measuring the change in the scene’s image due to a known change in the three intrinsic camera parameters: (i) distance between the lens and the image detector, (ii) foca ..."
Abstract
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A new method is described for recovering the distance of objects in a scene from images formed by lenses. The recovery is based on measuring the change in the scene’s image due to a known change in the three intrinsic camera parameters: (i) distance between the lens and the image detector, (ii
Cameras parameters initialization of 3D kinematic systems
"... 3D information of the scene can be extracted from images acquired by cameras. Before the actual reconstruction camera calibration has to be done. Reconstruction accuracy is highly dictated by the calibration. Two typical demands, which are not easily simultaneously satisfied, are: calibration has to ..."
Abstract
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Cited by 1 (0 self)
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to be done in fast and convenient manner and yet assure high degree of reconstruction accuracy. Computational part of calibration usually includes camera parameters initialization and refinement based on initial set of values. The goodness of initial set greatly affects refinement procedure in terms
1 Active tuning of intrinsic camera parameters
"... Abstract—In the last years, the research effort of the scientific community to study systems for ambient intelligence has been really strong. Usually, the systems developed so far base their analysis on images acquired by automatic cameras. In this paper, we propose a way to develop new smart system ..."
Abstract
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Cited by 2 (0 self)
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systems that are able to actively decide both what to see and how to see it. In particular, the main idea is to tune the acquisition parameters on the basis of what the system desires to acquire. The regulation strategy is based on two camera parameters, focus and iris. It aims to identify an optimal
Results 1 - 10
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309,912
