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首页> 外文期刊>International journal of computer science and network security >Inter frame Tampering Detection based on DWT-DCT Markov Features and Fine tuned AlexNet Model
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Inter frame Tampering Detection based on DWT-DCT Markov Features and Fine tuned AlexNet Model

机译:基于DWT-DCT Markov特征和精细调谐亚历纳网模型的帧间帧篡改检测

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摘要

video editing has turn out to be more convenient with editing software. Therefore, the validity of the videos becomes more important. Inter frame video counterfeiting is the most common type of video spoofing method that is difficult to detect with the naked eye. So far, it has been suggested that some algorithms detect Inter frame counterfeits based on artisanal characteristics, but the accuracy and processing speed of these algorithms remain a challenge. This article proposes Markov based approach to detecting this particular object. First, the unique Markov characteristics in the DCT domain are extended to capture not only the inter-block correlation but also the intra-block association among the block DCT coefficients. after that, supplementary features are built in the DWT domain to distinguish three types of dependencies between the wavelet coefficients across positions, scales, and orientations. After that, we will introduce a video tampering detection method to detect Inter frame video tampering based on Convolutional Neural Network (CNN) models by retraining the accessible CNN model trained on the ImageNet dataset. The proposed method is based on state-of-the-art CNN models, which are retrained to exploit the spatio-temporal relations in a video to strongly detect Inter frame fakes and we have also proposed a confidence score instead of the score of raw output based on these networks, to increase the precision of the proposed method. Through the experiments, the detection precision of the proposed method is 99.16%. This result has shown that the planned method has considerably higher efficiency and precision than other existing methods.
机译:通过编辑软件,视频编辑已变得更加方便。因此,视频的有效性变得更加重要。帧间帧视频假冒是最常见的视频欺骗方法,难以用肉眼检测。到目前为止,已经建议一些算法基于手工特征检测帧间帧性伪造,但这些算法的准确性和处理速度仍然是一个挑战。本文提出了基于马尔可夫的检测方法来检测这个特定对象。首先,扩展DCT域中的唯一马尔可夫特性以捕获块DCT系数之间的块间关联而且延伸到禁用间相关性。之后,在DWT域中构建了补充功能,以区分跨位置,尺度和方向的小波系数之间的三种类型的依赖性。之后,我们将引入一种视频篡改检测方法,通过培训在想象集数据集上训练的可接近的CNN模型来检测基于卷积神经网络(CNN)模型的帧帧视频篡改。所提出的方法基于最先进的CNN模型,该模型被培训以利用视频中的时空关系强烈地检测框架假货,我们还提出了置信度评分而不是原始输出的分数基于这些网络,提高所提出的方法的精度。通过实验,所提出的方法的检测精度为99.16%。该结果表明,计划的方法具有比其他现有方法更高的效率和精度。

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