Method and device for reconstructing image data from decoded image data

Abstract

The present principles relates to a method or device for reconstructing image data (I<3>) representative of original image data (I<1>) from decoded image data (i<2>) and parameters obtained from a bitstream (101), said parameters having been processed from said original image data (I<1>), characterized in that the method comprises: checking (102) if said parameters are lost, corrupted or not aligned with the decoded image data whose graphics or overlay is added to; when at least one of said parameters is lost, corrupted or not aligned with the decoded image data whose graphics or overlay is added to, selecting (104) a recovery mode (RMi) according to an information data (ID, 103) indicating how said parameters have been processed; and recovering (105) said at least one lost, corrupted or not aligned parameter by applying the selected recovery mode (RMi), said reconstruction of image data (13) then taking also into account said recovered parameters (12).

Description

technical field [0001] The present principles generally involve image / video reconstruction from decoded image / video data. In particular, but not exclusively, the technical field of the present principles relates to recovering parameters used to reconstruct an image from another image. Background technique [0002] This section is intended to introduce the reader to various aspects of technology, which may be related to various aspects of the present principles that are described and / or claimed below. This discussion is considered helpful in providing the reader with background information to better understand aspects of this principle. Accordingly, it should be understood that these statements are to be read in this light, and not as admissions of prior art. [0003] Hereinafter, image data refers to one or more arrays of samples (pixel values) in a specific image / video format that specifies all information Other devices are used for all information such as visualizing im...

AI Technical Summary

Problems solved by technology

[0018] These problems may be characterized by image flickering on fixed parts of the graphics when the decoded image is displayed over time, or by undesired effects on parts of the image that contain graphics or overlays that have been processed with inappropriate metadata (e.g. saturation, clipping) (e.g. handle bright OSD with metadata generated for dark content)

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