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Method and apparatus for encoding/decoding multi-layer video using weighted prediction

By extracting information from the lower layer video to calculate the weight factor, and performing weighted prediction on the upper layer video, it solves the problem of lack of inter-layer information utilization in multi-layer video coding of H.264 technology, and improves the efficiency and performance of video coding.

Inactive Publication Date: 2008-05-21
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology

However, since the motion block 11 is usually not the same as the average of the left and right images 21 and 31, it is difficult to obtain an accurate predicted image

Method used

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  • Method and apparatus for encoding/decoding multi-layer video using weighted prediction
  • Method and apparatus for encoding/decoding multi-layer video using weighted prediction
  • Method and apparatus for encoding/decoding multi-layer video using weighted prediction

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Embodiment Construction

[0034] Advantages and features of the present invention, and methods of achieving them, will be more readily understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art, and the invention will only be limited by the appended claims. Like reference numbers refer to like elements throughout the specification.

[0035] The present invention will now be described more fully with reference to the accompanying drawings, in which embodiments of the invention are shown.

[0036]Weighted prediction can be effective for fade-in or fade-out sequences caused by gradual increases or decreases in picture brightness. When ...

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Abstract

A method and apparatus effectively encode multiple layers using interlayer information in a multi-layered video codec. The method includes reading information concerning the low layer picture, calculating weighting factors using the information concerning the low layer picture, calculating a weighted sum of reference pictures for the current picture using the weighting factors and generating a predicted picture for the current picture, and encoding a difference between the current picture and the predicted picture.

Description

technical field [0001] Apparatuses and methods consistent with the present invention relate to video coding, and more particularly, to efficiently encoding multiple layers using inter-layer information in a multi-layer video codec. Background technique [0002] With the development of information communication technology, including the Internet, multimedia services including various information such as text, video, audio, etc. are increasing. Multimedia data requires a large capacity of the storage medium and a wide bandwidth for transmission because the volume of multimedia data is usually large. For example, a 24-bit true-color image with a resolution of 640*480 requires a capacity of 640*480*24 bits per frame, ie, about 7.37 megabits of data. When transmitting this image at 30 frames per second, a bandwidth of 221 Mbit / s is required. When storing a 90-minute movie based on such images, approximately 1200 gigabits of storage space is required. Thus, a compression encodi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N19/30H04N19/51
CPCH04N19/00424H04N7/462H04N19/00121H04N19/00696H04N7/465H04N7/26872H04N7/2659H04N19/00818H04N19/00721H04N7/50H04N19/00757H04N19/00787H04N7/26351H04N19/00781H04N19/52H04N19/30H04N19/13H04N19/63H04N19/61H04N19/59H04N19/577H04N19/615H04N19/51
Inventor 李教爀车尚昌韩宇镇
Owner SAMSUNG ELECTRONICS CO LTD
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