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Methods of processing and displaying images and display device using the methods

A technology for displaying images and images, which is applied in the field of image display equipment and can solve problems such as poor image reproduction

Inactive Publication Date: 2006-10-25
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When applied to systems with lower display rates (eg 50 Hz or 60 Hz), the modulation can be seen by the human eye and significantly degrade the reproduction of the displayed image

Method used

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  • Methods of processing and displaying images and display device using the methods
  • Methods of processing and displaying images and display device using the methods
  • Methods of processing and displaying images and display device using the methods

Examples

Experimental program
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Embodiment Construction

[0025] The following description is made in the context of digitally coded images, but the invention is of course not limited to such codes. In this case, one or more images to be displayed are described by data stored in a data medium 2, such as an optical disc, hard disk or magnetic tape. This data can also come from a broadcast channel (such as radio, satellite, cable or ADSL). The display system 4 receives this data in the form of a source stream representing an image or sequence of images to be displayed.

[0026] According to the first embodiment shown in Fig. 1, each image I of the source stream 1 results in two images I being displayed on a display (e.g. projector 8 with screen 10) 3 and I 4 . Therefore, in the case of moving images, the display rate is twice the ratio of the image in the source stream. Moreover, it can be pointed out that this embodiment can use only a single source image I 1 , which of course applies to the case of still images.

[0027] The p...

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PUM

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Abstract

The invention proposes a method of processing and displaying an image, comprising the steps of: modifying the color (C1) of at least one pixel of the image source; and calculating the color of said pixel in the processed image (C3, C4) in order to The mean value of the color of said pixels in the processed image (C3, C4) is equal to the mean value of the color of said pixels in the source image or source images (C1). Consequently, the display of the processed image relative to the human eye's composite color is the desired color in the source image or images, and the camcorder will register an unsatisfactory mix of the modified colors.

Description

technical field [0001] The present invention relates to a device and method for displaying images. Background technique [0002] Visual contents—whether they are still or moving images—are generally works that benefit from the guarantee of exclusivity associated with the author's rights. Their reproduction is generally only permitted within strictly defined frameworks that allow authors and their beneficiaries to be compensated. [0003] In order to ensure proper compliance with these legal rules, many systems have been developed to prevent illegal copying or to render copies of such poor quality that they are unusable. [0004] In this context, patent application EP 1 237 369 aims at counteracting the duplication of images by means of video cameras when they are displayed, such as the use of portable video recorders in cinemas. To this end, it has been proposed to use features in the vicinity of the value to be displayed, modulating the intensity of the pixels at a high r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/31H04N5/913
CPCH04N5/913H04N9/31H04N9/3182H04N2005/91392
Inventor 劳伦特·布朗德弗吉尼·哈利尔乔纳森·克维克
Owner THOMSON LICENSING SA