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Screen image compression device and compression method thereof

A technology for compressing device and screen image, which is applied in the field of image processing and can solve the problems of reducing the compression effect and the like

Inactive Publication Date: 2012-06-13
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If a frame of image is divided into CUs and encoded separately, the compression effect will be greatly reduced.

Method used

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  • Screen image compression device and compression method thereof
  • Screen image compression device and compression method thereof
  • Screen image compression device and compression method thereof

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Embodiment Construction

[0179] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0180] The diagrams provided in this embodiment are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than drawn according to the number, shape and size of the components in actual implementation. The type, quantity and ratio of each component can be changed at will during implementation, and the layout of the components ma...

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Abstract

The invention provides a screen image compression device and a compression method thereof. A plurality of sets of complemental coding tool combinations are used by the compression device, a coding unit with a certain pixel is taken as a coding unit, to a same coding unit, a plurality of sets of coding tool combinations are used simultaneously to carry out precoding, and a combination with an optimal rate-distortion characteristic is selected to compress the coding unit. Simultaneously, the invention provides a decompression apparatus and a decompression method which are corresponding to the compression device and the compressing method, through analyzing input compression code stream data, a decoding tool combination corresponding to the data is selected to decode the data and carry out image reconstruction, and a screen image compression effect of the present invention is raised substantially compared with the prior art.

Description

technical field [0001] The invention relates to an image processing technology, in particular to a screen image compression device and compression method. technical background [0002] With the rapid development and popularization of "cloud computing", "cloud rendering" and "cloud slice-screen computing", the interconnection between multiple computers and between hosts and other digital devices has become a reality and has become more and more mainstream. trend. This makes the real-time screen transmission from the server end ("cloud" or "cloud slice") to the client end an urgent need at present. Due to the large amount of screen video data that needs to be transmitted, taking a 24-bit true-color screen image with a resolution of 1920*1200 pixels and a refresh rate of 60 frames per second as an example, the data that needs to be transmitted exceeds 3 gigabits per second, so much Real-time transmission of data is impossible under current network conditions, so effective dat...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/50H04N19/103H04N19/147H04N19/169H04N19/44
Inventor 林涛王淑慧
Owner TONGJI UNIV
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