Method and device for restoring surveillance video

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 the problems of incomplete time/channel information and slow recovery speed.

Active Publication Date: 2018-02-23
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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  • Method and device for restoring surveillance video
  • Method and device for restoring surveillance video
  • Method and device for restoring surveillance video

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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 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 information such as the number of entries, the offset of the left chi...

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Abstract

The present invention discloses a monitoring video recovery method and device, wherein the method includes the following process: Process 1: HKFS stores all video file meta information in leaf nodes, and obtains the leftmost leaf node; Process 2: According to step 1 The obtained leftmost leaf node traverses all the leaf nodes through the offset of its sibling nodes, so as to find the leaf node where the deleted video file is located, obtain the entry information of the leaf node, and compare the entry information of the leaf node The metadata area of ​​the pointed video file is analyzed, and the corresponding deleted video file is recovered. On the basis of understanding the video storage structure of video monitoring, the present invention proposes a monitoring video recovery method. Compared with the recovery methods adopted by some software currently on the market, the method has the characteristics of fast recovery speed and complete recovery information.

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 Patents(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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