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Method and device for stipulating quality model of digital image signal

A digital signal, digital image technology, applied in the field of image processing, can solve the problem of no simplification for the end user

Inactive Publication Date: 2004-09-29
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However the information sent is about all quality levels and is not simplified for the end user

Method used

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  • Method and device for stipulating quality model of digital image signal
  • Method and device for stipulating quality model of digital image signal
  • Method and device for stipulating quality model of digital image signal

Examples

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Embodiment Construction

[0043] figure 1 The steps in the flow diagram shown allow, for example, a content creator to select the number of quality levels associated with each quality mode for an encoded image, the selection being based on level information provided by the image interface and provided by the display of the image. quality information. These steps are performed sequentially, for example when a content creator introduces a JPEG2000 image into a Flash animation.

[0044] Suppose we start with an image composed of something like image 3 IM-JP2K (IM-JPEG2000) images encoded by devices such as Device 2 shown, image 3 The device 2 shown is described further below.

[0045] In step S1, the header of the picture is read out, so that information about signal encoding can be obtained, such as the number of quality levels, the number of resolution levels, and the progression sequence in the binary code stream. This order of progression can eg be quality-resolution-component-position, which me...

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Abstract

This method of defining qualities for a digital image signal encoded beforehand consists of defining a predetermined number of quality modes each corresponding to at least one decoding parameter of the digital signal, this definition being made on the basis of rate information provided via a graphical interface and quality perception information provided via the visualization of the decoded digital signal.

Description

technical field [0001] The invention relates to a method and a device for specifying a quality mode of a digital image signal. [0002] The present invention is in the field of image processing in content creation for client-server applications. [0003] The application of the present invention to a digital signal representing an image that has been coded according to the JPEG2000 standard is specifically described here. In particular, it is possible to associate a JPEG2000 image with three quality modes, which are called "high", "normal" and "low", corresponding to three quality level values. Background of the invention [0004] Assuming that a content creator uses, for example, Macromedia FlashMX type software, the object of the present invention is to provide the content creator with tools to specify three quality modes ("high", "normal" and "low") for a given JPEG2000 image. ”), only one mode is available to the end user of the image. In our example the end user uses ...

Claims

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Application Information

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IPC IPC(8): H04N5/00H04N7/24
CPCH04N21/8153H04N21/234327H04N21/40H04N21/4621H04N21/85406
Inventor 珍妮·圭娄玛利林·克莱尔
Owner CANON KK