The Daala project is a royalty-free video codec that attempts to compete with the best patent-
encumbered codecs. Part of our strategy is to replace core tools of traditional video codecs …

An optimal unified architecture that can efficiently compute the discrete cosine, sine, Hartley,
Fourier, lapped orthogonal, and complex lapped transforms for a continuous stream of input …

This paper proposes a directional design method of 2-D nonseparable linear-phase
paraunitary filter banks. The proposed method is based on a lattice structure consisting of …

B. Wavelets. C. Multiresolution pyramids. D. Vision oriented models. III. Gabor Schemes of
Representation. A. Exact Gabor expansion for a continuous function. B. Gabor expansion of …

The paper presents the theory, lattice structure, and parameterization for a general class of P-
channel oversampled linear-phase perfect reconstruction filterbanks (OLPPRFBs)-systems …

From the Publisher: Here is a fully readable introduction to the basic technologies,
infrastructures, costs, and applications for digital audio and video compression. Delivering a …

Low power and high performance are the two most important criteria for many signal-
processing system designs, particularly in real-time multimedia applications. There have …

Two new lapped transforms are introduced: the LBT (lapped biorthogonal transform) and the
HLBT (hierarchical lapped biorthogonal transform). The LBT has the same computational …

In this paper, we present the design of directional lapped transforms for image coding. A
lapped transform, which can be implemented by a prefilter followed by a discrete cosine …

The paper proposes a pixel-based post-processing algorithm to enhance the quality of
motion JPEG (MJPEG) by exploiting the temporal redundancies of the decoded frames. The …