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Method and device for filtering a multidemensional digital signal and associated methods and devices

A digital signal and equipment technology, applied in the field of encoding and decoding, image or video filtering, can solve problems such as disallowed separability, complexity, etc., and achieve the effects of simple and practical implementation, improved encoding, and fast calculation

Inactive Publication Date: 2008-09-24
CANON RES CENT FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, this technique requires a lot of computation
In fact, the signal must be analyzed to identify parts with uniform flow, which is a complex operation
[0009] Moreover, this technique does not allow separability

Method used

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  • Method and device for filtering a multidemensional digital signal and associated methods and devices
  • Method and device for filtering a multidemensional digital signal and associated methods and devices
  • Method and device for filtering a multidemensional digital signal and associated methods and devices

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Embodiment Construction

[0069] With reference to FIG. 1 , as indicated by the general reference number denoted 1, a system for processing digital images, in particular by encoding and decoding according to the invention, comprises an encoding device 2, a unit 4 and decoding device 6 .

[0070] It will be pointed out here that the encoding / decoding method and device according to the invention find particularly advantageous application in a telecommunication system comprising a plurality of terminal equipment connected via a telecommunication network. The encoding / decoding method according to the invention is then implemented in a terminal device of said system in order to authorize the transfer of files via the telecommunication network, thereby reducing traffic and transfer times.

[0071] According to another particularly advantageous application, the encoding / decoding method according to the invention is implemented in a device for storing multimedia entities, enabling the storage of large amounts ...

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PUM

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Abstract

The invention relates to a method of filtering a multidimensional digital signal comprising a plurality of samples, and comprises the following steps applied to each of the samples to filter, simulating the filtering of the sample to filter by applying at least one filter in a plurality of geometric orientations in the digital signal (S52), the simulation resulting in a plurality of simulated filtering values of the sample, and obtaining a filtering value of the filtered sample on the basis of the plurality of simulated filtering values of the sample according to at least one predetermined criterion (S58).

Description

technical field [0001] The present invention relates to a method and a device for filtering a multidimensional digital signal, a method and a device for encoding a multidimensional digital signal, and a method and a device for decoding an encoded multidimensional digital signal. [0002] The present invention relates generally to the filtering, encoding and decoding of multidimensional digital signals, in particular images or video. [0003] A particularly advantageous but not exclusive preferred application of the invention is the filtering of digital signals using directional filters and the encoding / decoding of digital signals. Background technique [0004] For example, in the case of a digital image from a digital camera, the digital image is composed of a set of N×M pixels, where N is the image height calculated by pixel, and M is the image width. The image thus obtained is encoded before being stored in memory. The raw data, in other words the information representin...

Claims

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Application Information

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IPC IPC(8): H04N7/26
CPCH04N19/002H04N19/00824H04N19/00066H04N19/00266H04N19/00175H04N19/147H04N19/172H04N19/117H04N19/154H04N19/635
Inventor F·翰里
Owner CANON RES CENT FRANCE