2023
DOI: 10.3390/s23073694
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Pose and Focal Length Estimation Using Two Vanishing Points with Known Camera Position

Abstract: This paper proposes a new pose and focal length estimation method using two vanishing points and a known camera position. A vanishing point can determine the unit direction vector of the corresponding parallel lines in the camera frame, and as input, the unit direction vector of the corresponding parallel lines in the world frame is also known. Hence, the two units of direction vectors in camera and world frames, respectively, can be transformed into each other only through the rotation matrix that contains al… Show more

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Cited by 3 publications
(1 citation statement)
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“…The ability of an autonomous USV to detect the vanishing point is crucial for determining the direction of heading and staying on the route. The vanishing point refers to the intersection point produced by the extension line of each parallel edge of the three-dimensional graph [5]. Vanishing points can commonly be found in fields, railroads, streets, tunnels, forests, buildings and objects such as ladders (when viewed from the bottom up) [6].…”
Section: Introductionmentioning
confidence: 99%
“…The ability of an autonomous USV to detect the vanishing point is crucial for determining the direction of heading and staying on the route. The vanishing point refers to the intersection point produced by the extension line of each parallel edge of the three-dimensional graph [5]. Vanishing points can commonly be found in fields, railroads, streets, tunnels, forests, buildings and objects such as ladders (when viewed from the bottom up) [6].…”
Section: Introductionmentioning
confidence: 99%