Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Jennifer Rasch

Thomas Wiegand

Detlev Marpe

Heiko Schwarz

Gerhard Tech

Tobias Hinz

Jonathan Pfaff

Phan Hoang Tung Nguyen

Michael Schäfer

The refinement of block-based predictive coding and decoding of pictures as applicable in, e.g., hybrid video codecs, using additional reconstructed samples or residuals is described. An apparatus for block-based predictive decoding of a picture is described. The apparatus includes a combiner configured to combine a residual signal a predetermined block of the picture and a reference signal for the predetermined block so as to obtain a first spectrum, the residual signal correcting a prediction error of a prediction of the predetermined block of the picture; a reducer configured to perform thresholding on the first spectrum to obtain a second spectrum so that coefficients below a threshold value are set to a predefined value; an extractor configured to obtain from the second spectrum a modified version of the residual signal; and a reconstructor block configured to decode the predetermined block of the picture from the data stream on the basis of the modified version of the residual signal.

Refined block-based predictive coding and decoding of a picture

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Berlin, Germany

Jennifer Rasch