Emrah Akyol

US Patent:

20080152009, Jun 26, 2008

Filed:

Dec 21, 2006

Appl. No.:

11/643130

Inventors:

Emrah Akyol - Los Angeles CA, US
Debargha Mukherjee - Sunnyvale CA, US

International Classification:

H04N 7/32
H04N 7/26

US Classification:

37524016, 37524001, 375E07123

Abstract:

Video encoding that enables fine-grained control over the complexity of motion estimation to meet encoding constraints includes scaling a set of complexity control parameters in response to an encoding constraint and encoding the video in response to the complexity control parameters.

US Patent:

20150063445, Mar 5, 2015

Filed:

Aug 29, 2014

Appl. No.:

14/473586

Inventors:

- Oakland CA, US
Tejaswi Nanjundaswamy - Goleta CA, US
Kumar Bhargav Viswanatha - San Diego CA, US
Emrah Akyol - Los Angeles CA, US

Assignee:

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - Oakland CA

International Classification:

H04N 19/36
H04N 19/124

US Classification:

37524003, 37524001

Abstract:

A method and apparatus provide the ability to code signals in a layered manner for compression and networking applications. The solution involves a relaxed hierarchical structure of layers, wherein only an optimal subset of information from lower quality levels is transmitted to higher level decoders. This framework is complemented with a design method to optimize system parameters. Specialization may include techniques for employing irregular quantizers and/or estimation theoretic optimal parameter selection and/or content specific optimization (e.g., exploiting harmonic structure in audio, adaptive transform coding and enhanced motion compensated prediction for video) and/or optimization of the structure of the layers, where the potential of exploiting all the common information is realized to improve overall system performance for that application. One specific technique provides improved compression of signals with multiple quality levels with or without prediction. Another specific technique provides improved compression of signals with multiple heterogeneous quality-levels with or without prediction.