Synonyms
Optic flow
Related Concepts
Definition
Optical flow is the vector field that describes the perceived motion of points in the image plane.
Background
When working with image sequences, analyzing the change of the image over time provides valuable information about the scene. The motion of points in the image, as described by the optical flow field, is an important cue in many computer vision tasks, such as tracking, motion segmentation, and structure-from-motion.
Estimating the optical flow from pairs of images is a classical computer vision task. The problem is approached by matching certain image structures, which are assumed to be more or less stable over time, between two successive images. While earlier estimation methods could only provide sparse optical flow fields, nowadays it is common to estimate a dense optical flow field that provides a displacement vector for each pixel in the first image, describing where this pixel went in the second image.
Opti...
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Brox, T. (2014). Optical Flow. In: Ikeuchi, K. (eds) Computer Vision. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-31439-6_600
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DOI: https://doi.org/10.1007/978-0-387-31439-6_600
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