Zobrazeno 1 - 10
of 65
pro vyhledávání: '"David Soukal"'
Publikováno v:
Multimedia Systems. 11:98-107
In this paper, we use the recently proposed wet paper codes and introduce a new approach to passive-warden steganography called perturbed quantization. In perturbed quantization, the sender hides data while processing the cover object with an informa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::382c039db9a5588d60752c503158698b
https://doi.org/10.1007/s00530-005-0194-3
https://doi.org/10.1007/s00530-005-0194-3
Publikováno v:
Multimedia Systems. 9:288-302
The objective of steganalysis is to detect messages hidden in cover objects, such as digital images. In practice, the steganalyst is frequently interested in more than whether or not a secret message is present. The ultimate goal is to extract and de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e6429b59c3daf16b5ab78eaf122e6f4
https://doi.org/10.1007/s00530-003-0100-9
https://doi.org/10.1007/s00530-003-0100-9
Publikováno v:
WWW
In this paper, we propose a semi-supervised learning approach for classifying program (bot) generated web search traffic from that of genuine human users. The work is motivated by the challenge that the enormous amount of search data pose to traditio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c87b45024be310f2654aa98095fed46f
https://doi.org/10.1145/1772690.1772742
https://doi.org/10.1145/1772690.1772742
Publikováno v:
Information Hiding ISBN: 9783540741237
Information Hiding
Information Hiding
In this paper, we study embedding efficiency, which is an important attribute of steganographic schemes directly influencing their security. It is defined as the expected number of embedded random message bits per one embedding change. Constraining o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c7d262f9ce9c74861ed7113ac883db3
https://doi.org/10.1007/978-3-540-74124-4_19
https://doi.org/10.1007/978-3-540-74124-4_19
Autor:
David Soukal, Jessica Fridrich
Publikováno v:
Security, Steganography, and Watermarking of Multimedia Contents
Matrix embedding is a general coding method that can be applied to most steganographic schemes to improve their embedding efficiency-the number of message bits embedded per one embedding change. Because smaller number of embedding changes is less lik
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b1aa421723fc661437a0177c8790319
https://doi.org/10.1117/12.639933
https://doi.org/10.1117/12.639933
Publikováno v:
Security, Steganography, and Watermarking of Multimedia Contents
In this paper, we show that the communication channel known as writing in memory with defective cells is a relevant information-theoretical model for a specific case of passive warden steganography when the sender embeds a secret message into a subse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::645c044798ca9e5541a2fc3ad3692b69
https://doi.org/10.1117/12.583160
https://doi.org/10.1117/12.583160
Publikováno v:
Security, Steganography, and Watermarking of Multimedia Contents
This paper is an extension of our work on stego key search for JPEG images published at EI SPIE in 2004. We provide a more general theoretical description of the methodology, apply our approach to the spatial domain, and add a method that determines
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35e017773187418a8f38c3b5dd4595b1
https://doi.org/10.1117/12.585987
https://doi.org/10.1117/12.585987
Publikováno v:
Security, Steganography, and Watermarking of Multimedia Contents
In this paper, we propose a new method for estimation of the number of embedding changes for non-adaptive ±k embedding in images. By modeling the cover image and the stego noise as additive mixture of random processes, the stego message is estimated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5278df2ebd247b630b3a544ee5eb33b5
https://doi.org/10.1117/12.584201
https://doi.org/10.1117/12.584201
Publikováno v:
Information Hiding ISBN: 9783540290391
Information Hiding
Information Hiding
Wet paper codes were proposed as a tool for constructing steganographic schemes with an arbitrary selection channel that is not shared between the sender and the recipient. In this paper, we describe new approaches to wet paper codes that enjoy low c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88f5f02a9477f3322dd6190385f62a17
https://doi.org/10.1007/11558859_16
https://doi.org/10.1007/11558859_16
Publikováno v:
MM&Sec
In this paper, we introduce a new approach to passive-warden steganography in which the sender embeds the secret message into a certain subset of the cover object without having to share the selection channel with the recipient. An appropriate inform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d088aba30140f0ceb5a63c1017dc25b9
https://doi.org/10.1145/1022431.1022435
https://doi.org/10.1145/1022431.1022435