Ecole Polytechnique Federale De Lausanne

Leland Stanford Junior University

Markus Flierl

Pierre Vandergheynst

Bernd Girod

A method is disclosed for decomposing a set of even and odd pictures into low-band and high-band pictures respectively in a image decomposing unit, in which the even picture is used by at least two prediction motion compensators on which the output signal of each prediction motion compensator is scaled according to the number of prediction motion compensators. The method includes calculating the high-band picture by subtracting from the odd picture the scaled motion-compensated signals and using the high-band picture in the at least two update motion compensators, the output signal of each update motion compensator being scaled according to the number of update motion compensators. Finally, the low-band picture is calculated by adding the scaled update motion-compensated signals to the even picture.

Image transform for video coding

A method for decomposing a digital image at resolution R and MR into a set of spatial sub-bands of resolution R and MR where MR&#x3e;R and where the high-band at resolution MR is calculated by subtracting the filtered and up-sampled image at resolution R from the image at resolution MR and where the spatial low-band at resolution R is calculated by adding the filtered and down-sampled spatial high-band to the image at resolution R and where a rational factor for up-and down-sampling M is determined by the resolution ratio.

Growing community of inventors

Palo Alto, CA, United States of America

Markus Flierl