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Image coding and processing methods and devices

An image coding and coding technology, applied in the field of image coding and processing, can solve problems such as unstable video playback smoothly

Active Publication Date: 2015-12-16
HUAWEI TECH CO LTD
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  • Claims
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Problems solved by technology

[0007] In view of this, the present invention provides an image coding, processing method and device to solve the technical problem of smooth video playback on unstable and limited bandwidth wireless networks in the prior art

Method used

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  • Image coding and processing methods and devices
  • Image coding and processing methods and devices
  • Image coding and processing methods and devices

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Embodiment Construction

[0027] The technical terms involved in the present invention are explained below.

[0028] P frame: When encoding continuous dynamic images, several consecutive images are divided into three types: P, B, and I. The P frame is predicted from the P frame or I frame in front of it, and it is compared with the P frame in front of it. Or the same information or data between I frames, that is, the inter-frame compression is performed considering the characteristics of motion.

[0029] I-frame: An intra-coded frame is an independent frame with all its information, which can be decoded independently without reference to other images. The first frame in a video sequence is always an I-frame.

[0030] IDR frame: InstantaneousDecodingRefresh, instant decoding refresh. For convenience in encoding and decoding, the first I frame must be distinguished from other I frames, so the first I frame is called an IDR frame, which is convenient for controlling the encoding and decoding process. Th...

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Abstract

The invention discloses image coding and processing methods and devices. The image coding method comprises a step that at least two P frames comprising intra-frame predictive encoding macro blocks in a group of pictures are encoded in sequence, so that the intra-frame predictive encoding macro blocks of the at least two encoded P frames cover a complete frame image by rows. By utilizing the methods and the devices, a large impact on wireless channel transmission can be avoided, and meanwhile, when a transmission error or frame loss occurs, the whole image can return to normal through utilizing the intra-frame predictive encoding macro blocks by continuous multiple frames.

Description

technical field [0001] The present invention relates to the technical field of video processing, in particular to an image coding and processing method and device for P frames in a video coding sequence. Background technique [0002] With the popularization of mobile Internet 3G, 4G and WIFI, more and more video encoding products begin to transmit and order video encoded streams through wireless channels, and preview and playback them on mobile devices or on-demand platforms. The wireless channel is characterized by relatively small bandwidth, relatively large network fluctuations, and relatively high network packet loss rate. At this time, how to solve the problem of smooth video playback on an unstable and limited bandwidth wireless network is an urgent problem to be solved. [0003] Because the bit error rate of the wireless channel is generally relatively high, the current video encoding scheme generally adopts the GOP (group of picture) mode to encode the video sequence...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/114H04N19/107H04N19/176
Inventor 付洋鹿阳
Owner HUAWEI TECH CO LTD
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