Nonlinear preprocessing for MPEG-2 video sequences
نویسندگان
چکیده
F. Gottardo, J. Mir , G.Parladori Advanced Technologies Laboratory via Trento, 30 I-20059 Vimercate (MI), Italy G. L. Sicuranza D.E.E.I., University of Trieste via A. Valerio 10 I-34127 Trieste, Italy ABSTRACT In this paper a new block-based technique for image preltering is proposed, in order to overcome some limits of the MPEG{2 encoding process at low bitrates. The presented scheme performs a suitable classi cation of the blocks in the images based on motion estimation taking into account the characteristics of the human visual system. The information on the motion intensity, extracted from each image, is used to locally vary the ltering parameters of a nonlinear adaptive low-pass lter.
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تاریخ انتشار 1999