Method, apparatus and software for lossy data compression and function estimation
US7469065B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2002 |
| Grant date | Dec 23, 2008 |
| Priority date | — |
| Expiry date | Aug 15, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/63
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided a method of producing compressed data including the steps of receiving input data to be compressed (step 10), transforming said input data into a sum of basis functions multiplied by a corresponding set of coefficients, which may be a transformation to the frequency domain (step 12), forming a function or row of data from said set of coefficients (step 17), estimating the function using a learning process (step 21) and recording the resulting estimate (step 28) as the compressed data. Also provided is a method of estimating a function which may be used in the method of producing compressed data including inverting the function about a predetermined value (step 18) prior to using a learning process to estimate the function. Apparatus (1) for implementing the method and a software product to cause a processing means to implement the method are also claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.