A real-time hierarchical compression transmission method for pixel-level video information network

A video information, hierarchical compression technology, applied in the field of video information transmission, can solve the problem that pixel-level video information cannot be transmitted in real time, and achieve the effect of improving picture quality, increasing utilization rate, and reducing requirements

Inactive Publication Date: 2016-06-29
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] For this reason, what the present invention is to solve is the technical problem that the existing pixel-level video information cannot be transmitted in real time under the existing network bandwidth conditions, and provides a real-time hierarchical compression transmission method for pixel-level video information network

Method used

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  • A real-time hierarchical compression transmission method for pixel-level video information network
  • A real-time hierarchical compression transmission method for pixel-level video information network

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Embodiment 1

[0033] A specific embodiment of a pixel-level video information network real-time hierarchical compression transmission method according to the present invention is given below, see figure 1 As shown, a pixel-level video information network real-time hierarchical compression transmission method includes the following steps:

[0034]Step 1. Compress and encode the pixel-level video information to be transmitted at the sending end. The compression encoding is to perform hierarchical compression processing on the single-frame image in the video information at the pixel level one by one, including primary compression once and time after time. Stage compression, primary compression followed by secondary compression. The pixel-level method is a processing method for the pixel value of each pixel in a single frame image. The non-pixel-level method in the prior art is to characterize and reconstruct an image with as few bits as possible under a given distortion.

[0035] In this embo...

Embodiment 2

[0049] On the basis of Embodiment 1, taking a high-definition video image with a resolution of 1920*1080 pixels as an example, the amount of data I=1920x1080x60x24bit / s=2985984000bit / s transmitted in real time cannot be transmitted in the existing 100M Ethernet or based on Real-time transmission under the bandwidth condition of IEEE802.11n wireless network. The specific implementation steps are as follows:

[0050] Step 1: Compression encoding at the sending end

[0051] The sending end device encodes the pixel-level high-definition video information, that is, performs low-complexity, high-performance, and low-latency hierarchical compression processing on the single-frame video image of the above-mentioned high-definition video image in a pixel-level manner one by one. First go through the downsampling filter in the resampling filter for 2 n The reduced primary compression reduces the number of rows and columns of the original pixel-level video image to half of the original...

Embodiment 3

[0059] On the basis of the above-mentioned embodiment 2, if the local terminal is displayed as a low-resolution video image in step 3, and the local terminal is such as a tablet computer, a notebook computer, a desktop computer, a smart phone, etc., the user only needs to get the local terminal at the receiving end. low-resolution video information, step 3 adopts a direct display method. For example, the receiver needs to display a 640*360 pixel-level video image, according to figure 1 In the processing flow of step 3, the receiving end does not need to decode, but only needs to include The video image with the amount of information can be displayed, and the resolution of the displayed video image is the original video image That is, a 640*360 pixel-level video image.

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Abstract

The invention provides a network real-time graded compression and transmission method for pixel-level video information. The method comprises the following three steps of: carrying out graded compression processing one by one in a pixel level manner on single-frame video images of the pixel-level video information to be transmitted at a transmitting terminal; carrying out network transmission on the pixel-level video information which is subjected to compression and coding; and displaying the transmitted pixel-level video information as required at a receiving terminal. According to the network real-time graded compression and transmission method for the pixel-level video information, the compression and coding are carried out on the pixel-level video information by adopting a graded compression manner; on one hand, the transmitted amount of data is reduced, and the requirements of the compressed pixel-level video information on network broadband are reduced; and on the other hand, a bigger amount of information can be expressed by using fewer data after compression and coding, the video images with better quality of restoration can be obtained when the receiving terminal carries out restoration on the compressed pixel-level video information, and then, the image quality after transmission is improved, so that the contradiction among the amount of data, the image quality and the real-time performance in video signal transmission is better balanced.

Description

technical field [0001] The invention relates to the technical field of video information transmission, in particular to a real-time hierarchical compression transmission method for a pixel-level video information network. Background technique [0002] With the continuous development of video display technology and display terminal manufacturing technology, the resolution required by various video applications and the size of display terminals are constantly increasing, not only 1920*1080 and higher resolutions appear, but also the display terminal The size is constantly breaking through the limit of the manufacturing process, especially the emergence of screen splicing technology and projection fusion technology has further improved the display resolution and size of the display terminal. At the same time, applications such as modern media promotion, window display, and public demonstrations enable distributed video display technology to be engineered. With the increasing p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/2343H04N21/4402H04N19/132H04N19/117H04N19/34H04N19/156
Inventor 赵旦峰潘大鹏杨大伟梁明珅黄湘松王博宋程程李晓明李宗德万鹏
Owner HARBIN ENG UNIV
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