Citations: Modelling and Calibration of Automated Zoom Lenses

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R.G. Willson. Modelling and Calibration of Automated Zoom Lenses. PhD thesis, Carnegie Mellon University, 1994.

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Resolution Vs. Tracking Error: Zoom as a Gain Controller - Tordoff And Murray (2003) (Correct)

....zoom analysed. To apply this idea to actual pan tilt zoom hardware is problematic. Not only must the delays in image processing and control loop be measured, but also the dynamic properties of the head and zoom lens must be understood. Whilst the optics of zoom lenses have been researched (e.g. [8]) their electro mechanical properties have not been touched upon in the literature. The second part of this paper makes inroads into these issues. Knowledge of the dynamical properties of zoom lenses is becoming more relevant with the introduction of computer controllable zoom in a wide range of ....

R.G. Willson. Modelling and Calibration of Automated Zoom Lenses. PhD thesis, Carnegie Mellon University, 1994.

Binocular Tracking and Accommodation Controlled By Retinal Motion .. - Batista (2000) (Correct)

....of zoom settings m z and focusing distances D. To get the image in focus we used as sharpness criterion function the modified Laplacian proposed by Nayar [13] monitoring its behavior as the focus motor changed its settings. We used to describe these functional relationships bivariate polynomials [18]. The general formula for a n th order bivariate polynomial is BP (D; m z ) n X i=0 n Gammai X j=0 a ij D i m j z and the number of coefficients required by the polynomial is NC= n 1) n 2) 2. 1500 2000 2500 3000 3500 0 2 4 6 8 x 10 4 2 4 6 8 10 x 10 4 Focus settings D (mm) ....

Willson, R.: Modelling and Calibration of Automated Zoom Lenses. CMU-RI-TR-94-03, Carnegie Mellon University, (1994).

A Focusing-by-Vergence system controlled by retinal .. - Batista, Peixoto.. (Correct)

....and focusing distance are going to be considered in this modeling process, the functional relationship used to model the lens behavior has two independent variables, the zoom motor setting m f and the focusing distance D. We used to describe these functional relationships bivariate polynomials [18]. The general formula for a n th order bivariate polynomial is BP (D; m z ) n X i=0 n Gammai X j=0 a ij D i m j z (7) and the number of coefficients required by the polynomial is NC = n 1) n 2) 2. 1500 2000 2500 3000 3500 4000 0 1 2 3 4 5 6 7 8 x 10 4 2 4 6 8 10 x 10 4 Zoom ....

Willson, R.: Modelling and Calibration of Automated Zoom Lenses. CMU-RI-TR-94-03, Carnegie Mellon University, (1994).

An Analysis of Calibration and Registration Errors.. - King, Edwards.. (Correct)

....focus calibrations can provide extra accuracy when we have prior knowledge of the required zoom and focus settings. Calibration of the zoom and focus settings is achieved by modelling the variation in the values of the pinhole camera parameters as bivariate polynomial functions of zoom and focus [6]. The parameters modelled are the four intrinsic parameters: the image centre (cs; ls) and the magnifications k1 and k2; and the six extrinsic parameters: 3 translations X , Y , Z, and 3 rotations x , y , z . Each parameter is modelled in turn in the order shown in Table 1. Also shown is ....

R. G. Willson. Modelling and Calibration of Automated Zoom Lenses. Ph.D. thesis, The Robotics Institute, Carnegie Mellon University, 1994.

Visual Behaviors For Real-Time Control Of A Binocular .. - Batista, Peixoto.. (1997) (Correct)

.... However, if it is desirable to use the algebraic form for the parameter models, or to interpolate between the sampled lens settings, some generic functional relationships must be obtained between a dependent variable s (the lens parameters) and an independent variable l (the lens settings)(Willson, 1994). The MDOF motorized lens has the capability to adjust focus, zoom and aperture. The modelling process of the aperture degree of freedom was considered in a completely different procedure. Since only focus and zoom are going to be considered in this modelling process, the functional relationship ....

Willson, R. (1994)Modelling and Calibration of Automated Zoom Lenses CMU-RI-TR-94-03, Carnegie Mellon University.

Resolution Vs. Tracking Error: Zoom as a Gain Controller - Tordoff And Murray (2003) (Correct)

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R.G. Willson. Modelling and Calibration of Automated Zoom Lenses. PhD thesis, Carnegie Mellon University, 1994.

The Impact of Radial Distortion on the Self-Calibration of.. - Tordoff, Murray (2004) (Correct)

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R. Willson, Modelling and calibration of automated zoom lenses, Ph.D. thesis, Carnegie Mellon University (1994).

Correction of Geometric Image Distortion Using FPGAs - Eadie, Shevlin, Nisbet (Correct)

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R. . Willson, Modelling and calibration of automated zoom lenses. PhD thesis,

Real-Time Visual Behaviors with a Binocular Active.. - Batista, Peixoto.. (1997) (2 citations) (Correct)