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In the past, we have made use of infrared CCD camera to take pictures of vein for vein authentication. However, mounting infrared CCD camera for electrical device is dangerous due to the problem of privacy invasions. In addition, there have been registration problem which lower the correlation. Then, we propose a method that visualizes vein using color information subpixel level image registration...
Determining the capacity of image for data hiding is a complex task. This capacity may be influenced by many factors such as the content of image and also Human Visual System (HVS). A few works on this topic are reported. In this paper we propose a new method for calculating capacity in gray scale images. Our method is based on measuring Smoothness and Connectivity of neighbors of a specific pixel...
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