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Digital image hashing using local
histogram of Oriented Gradients
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The ease with which digital images can be manipulated without severe degradation of quality makes it necessary to be able to verify the authenticity of digital images. One way to establish the image authenticity is by computing a hash sequence from an image. This hash sequence must be robust against non content-altering manipulations, but must be able to show if the content of the image has been tampered with. Furthermore, the hash has to have enough differentiating power such that the hash sequences from two different images are not similar. This paper presents an image hashing system based on local Histogram of Oriented Gradients. The system is shown to have good
differentiating power, robust against non content-altering manipulations such as filtering and JPEG compression and is sensitive to content-altering attacks.
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Information Technology and Electrical Engineering (ICITEE), 2014 6th International Conference on
Date of Conference:
7-8 Oct. 2014
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Setyawan, I. ; Dept. of Electron. Eng., Satya Wacana Christians Univ., Salatiga, Indonesia ; Timotius, I.K.
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