A method for video redirection based on grid and frame grouping

A redirection and grid technology, applied in the field of video processing, to achieve good visual effects, improve video redirection performance, and maintain temporal and spatial coherence

Active Publication Date: 2021-04-13
GUANGXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, due to the diversity of video content, existing video redirection methods still cannot maintain good spatio-temporal coherence for all videos

Method used

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  • A method for video redirection based on grid and frame grouping
  • A method for video redirection based on grid and frame grouping
  • A method for video redirection based on grid and frame grouping

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0024] The video redirection method based on grid and frame grouping proposed by the present invention makes full use of the connection of video objects moving between frames. After video frames are grouped, all frames in the same group share a set of scaling factors. The corresponding constraint connection is established through the corresponding background and motion, and the jitter of the vid...

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Abstract

In order to maintain the temporal-spatial coherence of the redirected video and ensure the reconstruction quality of the important content of the video, the present invention proposes a method for video redirection based on grid and frame grouping. Including: firstly, on the basis of constructing the global motion model of the video, group the video frames according to the size of the grid; Constraints to obtain its zoom factor; finally, use the zoom factor corresponding to the grid in each video group to realize the redirection operation on all video frames in the group. Experimental results show that, compared with existing video redirection methods, this method can not only obtain better reconstruction quality of important video content, but also effectively reduce the jitter of redirected videos.

Description

technical field [0001] The invention belongs to the technical field of video processing, and more particularly relates to a method for video redirection based on grid and frame grouping. Background technique [0002] With the increasing popularity of mobile terminal devices such as mobile phones, MP4 and tablet computers, people can use different terminal devices to watch media content such as digital videos anytime and anywhere. However, due to the different functional uses and market positioning of different terminal devices, the size and aspect ratio of display screens are diverse. In order to present video content on different devices completely and without distortion, it is necessary to effectively adjust the resolution and aspect ratio of the video. There are three traditional video scaling methods: uniform scaling, edge padding, and cropping. The uniform scaling method uniformly deletes or increases the pixels in the video frame through linear interpolation, which w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/4402H04N21/2343
CPCH04N21/234363H04N21/234372H04N21/440263H04N21/440272
Inventor 唐振华黄宝婵王帅梁雪霞唐雨霞覃团发
Owner GUANGXI UNIV
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