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Related Concept Videos

Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

1.0K
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
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Relative Motion Analysis using Rotating Axes-Problem Solving01:29

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Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
834

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Related Experiment Video

Updated: Apr 25, 2026

Using Eye-tracking to Assess the Relative Importance of Visual and Vestibular Input to Subcortical Motion Processing in the Roll Plane
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Published on: August 22, 2025

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High-precision rotation angle measurement method based on monocular vision.

Jing Jin, Lingna Zhao, Shengli Xu

    Journal of the Optical Society of America. A, Optics, Image Science, and Vision
    |August 15, 2014
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a high-precision monocular vision method for measuring rotation angles (pitch, roll, yaw) of rigid objects. The system achieves measurement precision up to 1 arc second, offering high stability for diverse applications.

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    Area of Science:

    • Robotics and Control Systems
    • Computer Vision and Image Processing
    • Metrology and Measurement Science

    Background:

    • Accurate measurement of attitude angles (pitch, roll, yaw) is critical for rigid objects in dynamic environments.
    • Existing methods may face limitations in precision, stability, or applicability across various fields.
    • Monocular vision systems offer a potentially cost-effective and adaptable solution for rotation angle measurement.

    Purpose of the Study:

    • To develop and validate a high-precision rotation angle measurement method using monocular vision.
    • To achieve measurement accuracy of 1 arc second for pitch, roll, and yaw angles.
    • To demonstrate the system's stability and applicability in demanding fields.

    Main Methods:

    • A monocular vision system comprising an area scan CCD, prime lens, and a fixed spots array target on the object.
    • Integration of camera self-calibration techniques for accurate intrinsic and extrinsic parameter estimation.
    • Application of multiview geometry principles and 3D reconstruction for precise angle calculation.
    • Rebuilding the rotating spots array target to determine the object's attitude angles.

    Main Results:

    • Experimental validation demonstrating measurement precision of rotation angles up to 1 arc second.
    • The proposed method exhibits high precision and robust stability in experimental trials.
    • Successful reconstruction of the rotating spots array target enabling accurate attitude angle determination.

    Conclusions:

    • The developed monocular vision method provides a highly precise and stable solution for measuring rigid object rotation angles.
    • The system's accuracy and reliability make it suitable for applications in machinery manufacturing, engineering measurement, aerospace, and military contexts.
    • This approach offers a significant advancement in non-contact, high-accuracy attitude angle measurement.