Video coding apparatus and method for inserting key frame adaptively

A technology of video encoder and key frame, applied in the direction of digital video signal modification, TV, pulse modulated TV signal transmission, etc., can solve problems such as service increase

Inactive Publication Date: 2007-02-07
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Multimedia services that can provide various types of information such as text, images, and music have increased since conventional text communication cannot satisfy various needs of users.

Method used

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  • Video coding apparatus and method for inserting key frame adaptively
  • Video coding apparatus and method for inserting key frame adaptively
  • Video coding apparatus and method for inserting key frame adaptively

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Embodiment Construction

[0046] The advantages and features of the present invention, and methods of achieving them, will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to only the exemplary embodiments set forth herein; rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and to convey the present disclosure The inventive concept is fully conveyed to those skilled in the art. The present invention is defined by the claims, which are intended to cover all such modifications as may fall within the spirit and scope of the invention. Throughout the specification, the same reference numerals in different drawings refer to the same parts.

[0047] refer to figure 2 , the fade-out occurs between the fifth and sixth frames, and the scene transition occurs between the sev...

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Abstract

A method of adaptively inserting a key frame according to video content to allow a user to easily access a desired scene. A video encoder includes a coding mode determination unit receiving a temporal residual frame with respect to an original frame, determining whether the original frame has a scene change by comparing the temporal residual frame with a predetermined reference, determining to encode the temporal residual frame when it is determined that the original frame does not have the scene change, and determining to encode the original frame when it is determined that the original frame has the scene change, and a spatial transformer performing spatial transform on either of the temporal residual frame and the original frame according to the determination of the coding mode determination unit and obtaining a transform coefficient. A keyframe is inserted according to access to a scene based on the content of an image, so that usability of a function allowing access to a random image frame is increased.

Description

technical field [0001] The present invention relates to video compression, and more particularly, to a method of adaptively inserting key frames according to video content to allow users to easily access desired scenes. Background technique [0002] With the development of information communication technology including the Internet, video communication as well as text and voice communication have increased. Since conventional text communication cannot satisfy various needs of users, multimedia services that can provide various types of information such as text, images, and music are increasing. Since the amount of multimedia data is generally large, the multimedia data requires a large-capacity storage medium and a wide bandwidth for transmission. For example, a 24-bit true-color image with a resolution of 640*480 requires a capacity of 640*480*24 bits per frame, that is, about 7.37M bits of data per frame. When transmitting this image at 30 frames ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N7/12H04N7/26H04N7/50
CPCH04N19/00781H04N7/50H04N7/26308H04N19/00278H04N7/26244H04N19/00024H04N7/26143H04N19/00054H04N7/26031H04N19/00121H04N7/26898H04N7/2659H04N19/0003H04N19/00921H04N19/00351H04N7/26271H04N7/26015H04N19/00163H04N19/00818H04N19/00787H04N19/00266H04N7/26047H04N19/105H04N19/176H04N19/172H04N19/13H04N19/63H04N19/61H04N19/107H04N19/114H04N19/142H04N19/19H04N19/87H04N19/615H04N19/46
Inventor 李宰荣韩宇镇
Owner SAMSUNG ELECTRONICS CO LTD
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