Description of image composition with hevc still image file format

Patent metadata

Field	Value
Publication number	US-2016105690-A1
Application number	US-201514881063-A
Country	US
Kind code	A1
Filing date	Oct 12, 2015
Priority date	Oct 14, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

A method of encapsulating an encoded bitstream representing one or more images includes providing description of images and/or sub-image picture, providing composed picture description, and outputting the bitstream. The description of images and/or sub-image pictures identifying portions of the bitstream representing the images and/or sub-images of the one or more images is provided. The composed picture description of at least one composed picture formed by one or more images and/or sub-image pictures also is provided. The bitstream, together with the composed picture description, is output as an encapsulated data file.

First claim

1 . A method of encapsulating an encoded bitstream representing one or more images, the method comprising:
providing description of images and/or sub-image pictures identifying portions of the bitstream representing the images and/or sub-images of the one or more images; providing composed picture description of at least one composed picture formed by one or more images and/or sub-image pictures; and outputting the bitstream together with the composed picture description as an encapsulated data file.

2 . A method according to claim 1 , wherein the composed picture description is listed in a metadata box.

3 . A method according to claim 1 , wherein the composed picture description is signaled by a composed picture item.

4 . A method according to claim 1 ,
wherein the composed picture description is signaled by a composed picture item among a plurality of composed picture items, wherein one composed picture item of the plurality of composed picture items corresponds to one type of composition.

5 . A method according to claim 1 , further comprising providing reference information linking the composed picture description to the one or more images and/or sub-image pictures forming the at least one composed picture,
wherein outputting includes outputting, in the encapsulated data file, the bitstream together with the reference information.

6 . A method according to claim 5 , wherein the reference information includes a reference item.

7 . A method according to claim 5 , wherein the reference information comprises information which indicates if images and/or sub-image pictures forming part of the at least one composed picture are spatial parts or based on images.

8 . A method according to claim 1 , wherein at least two images and/or sub-image pictures, forming part of the at least one composed picture, identify portions of the bitstream representing two different images and/or sub-images of at least two different images.

9 . A method according to claim 8 , further comprising comparing configurations of decoding methods used for decoding the at least two different images and/or sub-image pictures, and,
if the configurations are similar, then providing only one configuration item identifying the configuration of a decoding method, linked to the at least one composed picture, and further outputting the bitstream together with the only one configuration item in the encapsulated data file.

10 . A method according to claim 1 , wherein the at least one composed picture formed by one or more images and/or sub-image pictures is defined, by default, as an image to display.

11 . A method of processing an encapsulated data file, wherein the encapsulated data file includes an encoded bitstream representing one or more images, and information that includes a composed picture description of at least one composed picture, wherein a composed picture is formed by images and/or sub-image pictures that identify portions of the bitstream representing images and/or sub-images of images, the method comprising:
determining the images and/or sub-image pictures forming the composed picture; and displaying the composed picture.

12 . The method of claim 11 , wherein determining includes:
parsing description metadata included in the information in the encapsulated data file, and, if available, (i) obtaining a composed picture item from the description metadata and parameters related to the composed picture, (ii) obtaining and decoding the images and/or sub-image pictures forming the composed picture, and (iii) composing the images and/or sub-image pictures for providing the composed picture, else, decoding the encoded bitstream.

13 . A method according to claim 11 , wherein the composed picture description is listed in a metadata box.

14 . A method according to claim 11 , wherein the composed picture description is signaled by a composed picture item.

15 . A method according to claim 11 , wherein the composed picture description is signaled by a composed picture item among a plurality of composed picture items, wherein one composed picture item of the plurality of composed picture items corresponds to one type of composition.

16 . A method according to claim 11 , wherein the encapsulated data file further includes reference information linking the composed picture description to the images and/or sub-image pictures forming the composed picture, the method further comprising outputting, in the encapsulated data file, the bitstream together with the reference information.

17 . A method according to claim 16 , wherein the reference information includes a reference item.

18 . A method according to claim 17 , wherein the reference information comprises information which indicates if images and/or sub-image pictures forming part of the composed picture are spatial parts or based on images.

19 . A method according to claim 11 ,
wherein the encapsulated data file further includes images and/or sub-image description information comprising display parameters relating to one or more image and/or sub-image pictures, and wherein the reference information links a composed picture item to the images and/or sub-image description information.

20 . A method according to claim 11 , wherein at least two images and/or sub-image pictures, forming part of the composed picture, identify portions of the bitstream representing two different images and/or sub-images of at least two different images.

21 . A method according to claim 20 , wherein the encapsulated data file further includes only one configuration item identifying the configuration of a decoding method for the composed picture.

Assignees

• Canon Kk

Inventors

• Denoual Franck
• Maze Frederic
• Concolato Cyril
• Le Feuvre Jean

Classifications

• H04N21/845

  Structuring of content, e.g. decomposing content into time segments · CPC title

• H04N21/8146

  involving graphical data, e.g. 3D object, 2D graphics · CPC title

• H04N21/236

  Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream {(multiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00)} · CPC title

• H04N19/46 Primary

  Embedding additional information in the video signal during the compression process (H04N19/517, H04N19/68, H04N19/70 take precedence) · CPC title

• H04N21/84

  Generation or processing of descriptive data, e.g. content descriptors {(systems specially adapted for using meta-information in broadcast systems H04H60/73)} · CPC title