Monitoring video restoration method and device

A technology for monitoring video and recovery methods, which is applied to components of color TVs, components of TV systems, TVs, etc., and can solve problems such as incomplete time/channel information and slow recovery speed.

Active Publication Date: 2015-01-21
XIAMEN MEIYA PICO INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Like most existing video recovery tools, this patent is based on file characteristics, which has disadvantages such as slow recovery speed and incomplete time / channel information.

Method used

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  • Monitoring video restoration method and device
  • Monitoring video restoration method and device

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Experimental program
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Embodiment Construction

[0060] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0061] The surveillance video storage structure studied in this paper adopts the HKFS file system (HKFS, High Performance File System, hereinafter referred to as HKFS). HKFS is mainly composed of header blocks, B+ tree meta information, and B+ trees. Among them, the header block contains information such as signature, disk size, log length, each file size, offset and length of B+ tree meta information; B+ tree meta information includes root node offset, tree depth, number of nodes, Node size and other information; B+ tree is the index information of all surveillance videos, and the complete information of all video files can be found through the B+ tree. The relationship between the three main components is as figure 1 shown.

[0062] The node of the B+ tree consists of two parts, the node head and the corresponding entry. The node header contains...

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Abstract

The invention discloses a monitoring video restoration method and device. The method includes the following steps that (1) an HKFS stores all video file meta information in leaf nodes, and the leftmost leaf node is obtained; (2) according to the leftmost leaf node obtained in the step (1), all the leaf nodes are traversed through deviation of other brother nodes, so that the leaf node where a deleted video file is located is found, entry information of the leaf node is obtained, a meta data area, pointed to by the entry information of the leaf node, of the video file is analyzed, and the corresponding deleted video file is restored. On the basis that a video storage structure of video monitoring is known, the monitoring video restoration method is provided. Compared with restoration methods adopted in some software in the market, the method has the advantages that restoration speed is high and restored information is complete.

Description

technical field [0001] The invention belongs to the technical field of computer data recovery, relates to video forensics security technology, and in particular relates to a monitoring video recovery method and device. Background technique [0002] In recent years, with the development of science and technology and the construction of safe cities in urban and rural areas, all kinds of security monitoring equipment have filled the streets and alleys, which has brought certain protection for the people's property safety and even personal safety. At present, the investigation of many criminal cases needs to rely on the video recordings on the monitoring equipment, and these recordings are likely to be mistakenly / maliciously deleted, resulting in the inability to find the video data of many monitoring sites and related sites or possible related sites, so the monitoring video Video recovery is a very important part of investigation. Therefore, the research on the restoration tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N5/781
Inventor 沈长达林艺滨钱镜洁
Owner XIAMEN MEIYA PICO INFORMATION
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