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Method for establishing virtual reference frame and equipment

A virtual reference and establishment method technology, applied in the field of image processing, can solve the problems of high power consumption and high decoder complexity

Active Publication Date: 2017-05-31
HISILICON (SHANGHAI) TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem of high decoder complexity, high power consumption, or use of additional code rate caused by the establishment of a virtual reference frame in the prior art, the embodiment of the present application provides a method and device for establishing a virtual reference frame

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  • Method for establishing virtual reference frame and equipment
  • Method for establishing virtual reference frame and equipment
  • Method for establishing virtual reference frame and equipment

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Embodiment Construction

[0114] In order to make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0115] The embodiment of the application provides a method for establishing a virtual reference frame, which is applied to a decoder, such as figure 1 As shown, the method includes the following steps:

[0116] 101. Receive at least one image frame transmitted by the encoder.

[0117] Each of the at least one image frame may include one block or multiple blocks. It should be noted that a block contains multiple pixels, for example, a block may contain 16×16 pixels, or 8×8 pixels, of course, it may also be other numbers, which is not limited in this application. Here, at least one image frame contains the data content of the video.

[0118] 102. Use a block with a virtual reference frame identifier in at least one image frame to establish a ...

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Abstract

The application, which relates to the image processing field, discloses a method for establishing a virtual reference frame and equipment. With the method and equipment, problems of high complexity of the decoder, high power consumption or needing of extra code rate for transmission during virtual reference frame establishment in the prior art can be solved. The method comprises: at least one image frame transmitted by a coder is received; and a virtual reference frame is established by using a block with a virtual reference frame identifier in the at least one image frame. Because the virtual reference frame identifier is added to the block for establishing the virtual reference frame, virtual reference frame transmission is not needed during the transmission process, so that code rate rising can be avoided. Moreover, the decoder only needs to extract the block with the virtual reference frame identifier to form the virtual reference frame and image-frame-based virtual reference frame establishment using an algorithm identical with the coder is not required, so that the complexity and power consumption of the decoder can be reduced. The method and equipment can be used for establishing a virtual reference frame.

Description

Technical field [0001] This application relates to the field of image processing, and in particular to a method and device for establishing a virtual reference frame. Background technique [0002] During the transmission of video files, the encoder encodes each frame of image and transmits it to the decoder. The decoder decodes the image and then plays the video on the display device. When the video is played, some images will appear repeatedly, such as fixed The background will reappear after the foreground object leaves. Use these recurring images as virtual reference frames. The virtual reference frames will not be displayed during video playback. They are only used for reference during encoding and decoding to improve encoding. And decoding efficiency. [0003] For example, in the related art, the encoder generates a background image according to at least one image frame to be transmitted and a preset modeling algorithm. The background image may be a fixed background during vi...

Claims

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Application Information

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IPC IPC(8): H04N19/105H04N19/176H04N19/517H04N19/577H04N19/154
CPCH04N19/105H04N19/154H04N19/176H04N19/517H04N19/577
Inventor 张怡轩吴东昇秘谧
Owner HISILICON (SHANGHAI) TECH CO LTD
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