The impact of a regularization of motion vectors (MVs) on the performance of a block-DCT based video coder (H.263) is addressed. Postprocessing is accomplished by exploiting both the spatial correlation of the vector field and the confidence of the estimated block vectors. A previously proposed adaptive scheme for MV smoothing, based on the theory of vector median filters, is adjusted and embedded into an H.263 coder. With a bit stream that is perfectly H.263-compatible, results are improved, especially for very low bit rates and complex motion of the scene

L., A., Barni, M., F., B., L., S. (2001). An improved H.263 video coder relying on weighted median filtering of motion vectors. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, 11(2), 235-240 [10.1109/76.905988].

An improved H.263 video coder relying on weighted median filtering of motion vectors

BARNI, MAURO;
2001-01-01

Abstract

The impact of a regularization of motion vectors (MVs) on the performance of a block-DCT based video coder (H.263) is addressed. Postprocessing is accomplished by exploiting both the spatial correlation of the vector field and the confidence of the estimated block vectors. A previously proposed adaptive scheme for MV smoothing, based on the theory of vector median filters, is adjusted and embedded into an H.263 coder. With a bit stream that is perfectly H.263-compatible, results are improved, especially for very low bit rates and complex motion of the scene
2001
L., A., Barni, M., F., B., L., S. (2001). An improved H.263 video coder relying on weighted median filtering of motion vectors. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, 11(2), 235-240 [10.1109/76.905988].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/33546
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