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第二届全国几何设计与计算学术会议

作者： Xiong Li Zongchang Xu Kai Wang Department of Command and Administration Armored Force Engineering Institute

In order to be able to interact with its environment correctly,a robot require high-precision navigation over various *** involves the ability to determine a robot’s position relative to objects (stationary or moving) in the environment,and to interact with them ***,multiple sensors are used as redundant computation channels to tolerate certain types of error,incompleteness, inaccuracy,and/or tardiness in the data supplied by individual system elements such as sensors or processors. Data fusion in multi-sensor systems is investigated by numerous *** problem of "voting" or, more generally,integrating results from multiple computations has been studied by computer

关键词： multi sensor data fusion algorithm fuzzy similarity robot navigation

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Copy-Move Geometric Tampering Estimation Through Enhanced SIFT Detector Method

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Computer Systems Science & Engineering 2023年第1期44卷 157-171页

作者： J.S.Sujin S.Sophia Department of Electronics and Communication Engineering Sri Krishna College of TechnologyCoimbatore641042India Department of Electronics and Communication Engineering Sri Krishna College of Engineering and TechnologyCoimbatore641008India

Digital picture forgery detection has recently become a popular and sig-nificant topic in image *** to advancements in image processing and the availability of sophisticated software,picture fabrication may hide evidence and hinder the detection of such criminal *** practice of modifying origi-nal photographic images to generate a forged image is known as digital image forging.A section of an image is copied and pasted into another part of the same image to hide an item or duplicate particular image elements in copy-move *** order to make the forgeries real and inconspicuous,geometric or post-processing techniques are frequently performed on tampered regions during the tampering *** Copy-Move forgery detection,the high similarity between the tampered regions and the source regions has become crucial *** most frequent way for detecting copy-move forgeries is to partition the images into overlapping square blocks and utilize Discrete cosine transform(DCT)com-ponents as block *** to the high dimensionality of the feature space,Gaussian Radial basis function(RBF)kernel based Principal component analysis(PCA)is used to minimize the dimensionality of the feature vector repre-sentation,which improves feature matching *** this paper,we propose to use a novel enhanced Scale-invariant feature transform(SIFT)detector method called as RootSIFT,combined with the similarity measures to mark the tampered areas in the *** proposed method outperforms existing state-of-the-art methods in terms of matching time complexity,detection reliability,and forgery location accuracy,according to the experimental *** F1 score of the proposed method is 92.3%while the literature methods are around 90%on an average.

关键词： multi sensor data fusion discriminator orientation pose position mean average precision recall

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