Video tampering recovery processing method and system, storage medium and encoder

Abstract

The invention belongs to the technical field of video information processing, and discloses a video tampering recovery processing method and system, a storage medium and an encoder, and the method comprises the steps: enabling a monitoring video to serve as a deletion channel, and transmitting a video watermark composed of a highly-compressed key frame and positioning data through the deletion channel; embedding the watermark by adopting fountain codes and extracting the same at a decoder end to realize intra-frame tampering detection recovery and inter-frame tampering detection; in the inter-frame tampering detection, extracting frame indexes of all frames in a frame window, from the last key frame verified as a real block using the extracted frame indexes for distinguishing inserted or deleted frames, and determining the position of a new key frame; and repeating the verification and recovery process by using the new key frame. Compared with the traditional video tampering recovery method, the method provided by the invention has the advantages that by using the algorithm provided by the invention, the quality of the recovered image is obviously better, the efficiency is better than that of the existing algorithm, and the quality range is about 33.2-41.6 dB.

Description

technical field [0001] The invention belongs to the technical field of video information processing, and in particular relates to a video tampering recovery processing method, system, storage medium, and encoder. Background technique [0002] At present, surveillance video is often used as evidence in investigations and courts, so it is very important to ensure the authenticity and reliability of surveillance video. The tampering methods for surveillance video are mainly time-domain tampering and air-space tampering. Time-domain tampering is to manipulate the frame sequence during inter-frame editing. Common attack types include frame addition, frame deletion, and frame rearrangement; airspace tampering refers to The content of a single frame image is modified during the editing process, and common spatial tampering attacks can be divided into object addition, object deletion, and object modification. In most video tampering detection methods, the existence of the original ...

AI Technical Summary

Problems solved by technology

[0007] The difficulty of solving the above problems and defects is: the video data needs to be encoded during the video storage process, the video data volume is very large, and the performance requirements of the video detection and recovery algorithm are relatively high during processing

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