The digital image processing is to be used in Antiforensics of photo response non-uniformity of digital images. Fingerprints are one of those irregular twists of nature. The fingerprints are used for authentication and identification processes in forensic tasks such as detection of digital forgeries. Forensic tasks can to be performed in device identification problem, device linking problem, fi...

Two-dimensional (2-D) photo-count mapping on CMOS single photon avalanche diodes (SPADs) has been demonstrated. Together with the varied incident wavelengths, the depth-dependent electric field distribution in active region has been investigated on two SPADs with different structures. Clear but different non-uniformity of photo-response have been observed for the two studied devices. With the h...

Photo-response non-uniformity (PRNU) of digital sensors was recently proposed [1] as a unique identification fingerprint for digital cameras. The PRNU extracted from a specific image can be used to link it to the digital camera that took the image. Because digital camcorders use the same imaging sensors, in this paper, we extend this technique for identification of digital camcorders from video...

For some classes of Boolean functions we study charecteristics

Embedded system design realization of non uniformity correction algorithm is proposed in this paper. The correction algorithm is presented to correct fixed pattern noise. The algorithm has been tested on actual Infrared data with different levels of simulated non-uniformities and on data with actual non-uniformities. The results show that the images are practically free from nonuniformities.

Purpose/background: In recent years, the local control of tumor after radiotherapy has shown a remarkable improvement due to the widespread of the particle beam therapy, IMRT etc.. However, the survival rate of the patients is not satisfied because of the recurrence or distant metastasis. There is an urgent need to search for therapies to control the metastasis. Hyperfractionation is the mainst...

In direct numerical simulations of strongly stratified turbulence we have previously studied the development of large scale magnetic structures starting from a uniform background field. This is caused by an instability resulting from a negative contribution of small-scale turbulence to the effective (mean-field) magnetic pressure, and was qualitatively reproduced in mean-field simulations (MFS)...

Implicit computational complexity. Loosely speaking, the aim of implicit computational complexity is to replace clocks (or other explicit resource bounds) with certificates. For example, if we consider polynomial time computation, the idea is to define a structured programming language whose programs are guaranteed to be polytime by construction, i.e., because they satisfy some syntactic condit...

In order to assess the possible importance of regional non-uniformity of left ventricular function, angiograms of 42 normal subjects and 105 patients with coronary artery disease were digitised frame by frame. Regional curvature around the cavity was assessed, only positive curvature being compatible with ellipsoidal geometry. In normal subjects, positive curvature of the anterior wall was show...

Long after the Blaster, Slammer/Sapphire, and CodeRedII worms caused significant worldwide disruptions, a huge number of infected hosts from these worms continue to probe the Internet today. This paper investigates hotspots (non-uniformities) in the targeting behavior of these important Internet worms. Recent data collected over the period of a month and a half using a distributed blackhole dat...