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Video playback system suitable for large area array meter-level high-resolution satellites

A video playback, high-resolution technology, applied in the direction of selective content distribution, image communication, electrical components, etc., can solve the problems such as the inability to realize the detection function of moving objects, the inability to play smoothly satellite remote sensing video files, and the impact on viewing and detailed analysis.

Active Publication Date: 2020-11-03
CHANGGUANG SATELLITE TECH CO LTD
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Problems solved by technology

[0007] In order to solve the problems that the existing video playback technology cannot smoothly play satellite remote sensing video files, and at the same time, it can be zoomed, affects viewing and detail analysis, and cannot realize the function of moving target detection, etc. Resolution Satellite Video Playback System

Method used

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  • Video playback system suitable for large area array meter-level high-resolution satellites
  • Video playback system suitable for large area array meter-level high-resolution satellites
  • Video playback system suitable for large area array meter-level high-resolution satellites

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specific Embodiment approach 1

[0025] Specific implementation mode 1. Combination Figure 1 to Figure 4 Describe this embodiment, be applicable to the video playing system of large area array rice-level high-resolution satellite, this system comprises video decoding module, video playing module, video scaling module and moving target detection and tracking module;

[0026] The video decoding module: opening the video is the only way of software data input, mainly divided into two ways: clicking the "open video" button or dragging the video file into the software window. In order to achieve the purpose of the playback process, the entire large video must first be buffered into memory, which has limitations on the available memory of the machine. combine image 3 , open the selected video file, judge whether it is successfully opened, if not, continue to open the video file, if yes, read the video file information, the system automatically selects the corresponding decoder to decode the video according to th...

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Abstract

The invention discloses a video playing system applicable to a large-area-array meter-grade high-resolution satellite, relates to the technical field of video playing of the large-area-array meter-grade high-resolution satellite, and solves the problem that an existing video playing technology cannot carry out smooth playing on a satellite remote sensing video file, meanwhile, can carry out scaling, influences viewing and detail analysis, cannot achieve a moving target detection function and the like. The video playing system comprises a video decoding module, a video playing module, a video scaling module and a moving target detecting and tracking module; conventional playing operations of a video are implemented by adopting technologies, such as an OpenCV computer digital image processing library, image preloading and the like; scaling processing on a specific scene can be implemented in a mode of selecting a local region by human-computer interaction; and identification and trackingon aircraft, vehicles, ships and the like are implemented by adopting a moving target tracking algorithm based on contexts. Playing of a satellite video according to a frame rate is implemented in amode of loading an integral video file to a memory, and the blocking case cannot be generated for skipping, full-screen and scaling operations.

Description

technical field [0001] The present invention relates to the field of video playback technology for large area array meter-level high-resolution satellites, in particular to a video playback system suitable for large-area array meter-level high-resolution satellites, which can realize many tasks related to high-resolution satellite video playback operate. Background technique [0002] The "Jilin-1" video satellite independently developed by Changguang Satellite Technology Co., Ltd. can shoot clear video images with an area of ​​tens of kilometers on the earth in space hundreds of kilometers away, and the spatial resolution has reached the level of meters. For a video of about 1 minute, its total size will reach the order of several gigabytes. For a single frame image of 12K*5K, its size is 175M, which is far beyond the comparison of a single frame image of ordinary video with a size of 1920*1080. These massive and heavyweight large videos pose a severe challenge to video pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/4728H04N21/472
Inventor 王春月高放钟兴张鹏杨勇帅曲春梅田甜
Owner CHANGGUANG SATELLITE TECH CO LTD
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