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» Visible Edges Thresholding: a HVS based Approach
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ICPR
2006
IEEE
13 years 11 months ago
Visible Edges Thresholding: a HVS based Approach
This paper presents a technique, which determines whether an edge is visible for a human eye or not. First, a threshold function is built according to the optical characteristics ...
Nicolas Hautière, Didier Aubert
ICIP
2002
IEEE
14 years 6 months ago
Foveated image watermarking
The spatial resolution of the human visual system (HVS) decreases rapidly away from the point of fixation (foveation point). By exploiting this fact, we propose a watermarking app...
Alper Koz, A. Aydin Alatan
ICTAI
2005
IEEE
13 years 10 months ago
An Adaptive De-Blocking Algorithm Based on MRF
One of the major drawbacks in block-based discrete cosine transform (BDCT) is the blocking artifacts at low bit rates. In this paper, an adaptive deblocking algorithm based on Mar...
Shengli Xie, Zhiliang Xu
ICMCS
2006
IEEE
133views Multimedia» more  ICMCS 2006»
13 years 11 months ago
A Captcha Based on the Human Visual Systems Masking Characteristics
In this paper, a CAPTCHA is presented based on the masking characteristics of the Human Visual System (HVS). Knowing that noise can be masked by high activity regions and showing ...
Rony Ferzli, Rida A. Bazzi, Lina J. Karam
CAIP
2007
Springer
13 years 11 months ago
A Simplified Human Vision Model Applied to a Blocking Artifact Metric
A novel approach towards a simplified, though still reliable human vision model based on the spatial masking properties of the human visual system (HVS) is presented. The model con...
Hantao Liu, Ingrid Heynderickx