39 citations · 59 across the 6 of their papers we have counts for
6 papers
Transform and Entropy Coding in AV2
Alican Nalci, Hilmi E. Egilmez, Madhu P. Krishnan +21
AV2 is the successor to the AV1 video coding standard developed by the Alliance for Open Media (AOMedia). Its primary objective is to deliver substantial compression gains and subj…
Joint Optimization of Primary and Secondary Transforms Using Rate-Distortion Optimized Transform Design
Darukeesan Pakiyarajah, Eduardo Pavez, Antonio Ortega +4
Data-dependent transforms are increasingly being incorporated into next-generation video coding systems such as AVM, a codec under development by the Alliance for Open Media (AOM),…
DCT and DST Filtering with Sparse Graph Operators
Keng-Shih Lu, Antonio Ortega, Debargha Mukherjee +1
Graph filtering is a fundamental tool in graph signal processing. Polynomial graph filters (PGFs), defined as polynomials of a fundamental graph operator, can be implemented in the…
Perceptually inspired weighted MSE optimization using irregularity-aware graph Fourier transform
Keng-Shih Lu, Antonio Ortega, Debargha Mukherjee +1
In image and video coding applications, distortion has been traditionally measured using mean square error (MSE), which suggests the use of orthogonal transforms, such as the discr…
Fast Graph Fourier Transforms Based on Graph Symmetry and Bipartition
Keng-Shih Lu, Antonio Ortega
The graph Fourier transform (GFT) is an important tool for graph signal processing, with applications ranging from graph-based image processing to spectral clustering. However, unl…
Closed Form Solutions of Combinatorial Graph Laplacian Estimation under Acyclic Topology Constraints
Keng-Shih Lu, Antonio Ortega
How to obtain a graph from data samples is an important problem in graph signal processing. One way to formulate this graph learning problem is based on Gaussian maximum likelihood…