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An extension to the avc standard to support the encoding and storage of high resolution digital still pictures in parallel with video

A still image, data encoding technology, applied in the field of video encoding

Inactive Publication Date: 2010-11-03
SONY CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Base layer carries lower resolution video

Method used

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  • An extension to the avc standard to support the encoding and storage of high resolution digital still pictures in parallel with video
  • An extension to the avc standard to support the encoding and storage of high resolution digital still pictures in parallel with video
  • An extension to the avc standard to support the encoding and storage of high resolution digital still pictures in parallel with video

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Embodiment Construction

[0040] figure 1The figure shows a parallel scheme utilizing a modified AVC standard to store high resolution still images in parallel with traditionally encoded AVC video. An AVC formatted video stream 10 comprises a succession of video frames. The enhanced residual stream 20 includes residual information corresponding to one or more high resolution still images 30 captured at random intervals. For each high resolution still image 31 , 32 , 33 , 34 and 35 there is corresponding residual information 21 , 22 , 23 , 24 and 25 in the enhanced residual stream 20 . Although in figure 1 Five high resolution still images are shown in , however, it will be appreciated that more or fewer than five high resolution still images may be captured. Residual information is the difference between the original high resolution still image and the corresponding decoded upsampled low resolution video frame.

[0041] A modified AVC standard enables each high resolution still image to be captured...

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Abstract

A codec configured to operate in a parallel mode extends the current AVC standard in order to provide support for coding and storage of high resolution still image pictures in parallel with the AVC coding of a lower resolution video. The parallel mode codec is configured according to the modified AVC standard and is capable of capturing an AVC video stream while concurrently capturing high resolution still images at random intervals of the video stream. Residual information stored as an enhancement layer, is used to generate one or more high resolution still images pictures using the up-sampled decoded lower resolution video at the decoder side. A base layer carries lower resolution video. The enhancement layer and the base layer are transmitted in parallel, as a multi-layer stream, from an encoder on the transmission side to a decoder at the receiving side. To carry enhancement information, the AVC standard is extended to include data field(s) for SEI Message Definitions, sequence parameter sets, and a new NAL Unit.

Description

technical field [0001] The present invention relates to the field of video coding. More specifically, the present invention relates to the field of AVC encoding and extending the current AVC standard to support the encoding and storage of high resolution digital still pictures together with conventionally encoded AVC video streams in an integrated parallel mode. Background technique [0002] The term "codec" means a "compressor / decompressor," "coder / decoder," or "compression / decompression algorithm," and describes a device or algorithm or specialized Computer program. A codec encodes a data stream or signal for transmission, storage, or encryption, and decodes it for viewing or editing. For example, a digital camera converts an analog signal to a digital signal, which then passes through a video compressor for digital transmission or storage. The receiving device then decompresses the received signal via a video decompressor, and the decompressed digital signal is convert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26
CPCH04N7/26351H04N19/00781H04N19/00521H04N19/00757H04N19/61H04N19/33H04N19/436H04N19/59
Inventor 艾利·塔巴塔拜穆罕默德·祖拜尔·维沙拉姆
Owner SONY CORP
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