Estimate of Color Depth Discretization Impact on the Accuracy of an Ideal Pinhole Camera

Abstract:

This paper investigates the limits of precision caused by color depth discretization in motion capture with known sphere marker in a uniform lighted scene for an ideal pinhole camera using a black box model. For each marker position its ellipse projection in the pixel plane is computed and the final pixel values are established based on how match the pixel area is covered by the marker image. The color of some boundary pixels loses information due to the color depth discretization and therefore the same image represents a range of marker location in space and not a single location. The maximum variations on all the major axis are computed with a precision of 100 nm for each marker location and a final analysis is performed using this findings.

• Periodical: Applied Mechanics and Materials (Volume 811)
• Pages: 217-221
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.811.217
• Online since: November 2015
• Authors: Radu Mirescu, Gabriela Roșca
• Keywords: Black Box Ideal Pinhole Camera Model, Color Depth Discretization, Computer Graphics, Gait Analysis, Motion Capture, Sphere Marker

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