نتایج جستجو برای: pixel value differencing

تعداد نتایج: 775448  

2012
Brajesh Patel Neelam Patel

In this paper a series of algorithm has been formed to track the feature of motion detection under surveillance system. In the proposed work a pixel variant plays a vital role in detection of moving object of a particular clip. If there is a little bit motion in a frame then it is detected very easily by calculating pixel variance. This algorithm detects the zero variation only when there is no...

Convolutional neural network is one of the effective methods for classifying images that performs learning using convolutional, pooling and fully-connected layers. All kinds of noise disrupt the operation of this network. Noise images reduce classification accuracy and increase convolutional neural network training time. Noise is an unwanted signal that destroys the original signal. Noise chang...

Journal: :Softwaretechnik-Trends 2012
Shahar Maoz Jan Oliver Ringert Bernhard Rumpe

This position paper provides an interim summary on the goals and current state of our ongoing research project on semantic model differencing for software evolution. We describe the basics of semantic model differencing, give two examples from our recent work, and discuss future challenges in taking full advantage of the potential of semantic differencing techniques in the context of models’ ev...

2011
Rajkumar Yadav Ravi Saini Gaurav Chawla

In this paper, a new Image Steganography method based on the spatial domain is proposed. It uses the 7 bit of pixel value of cover image. The main idea is to make the 7 bit of pixel value equal to the message bit by adding or subtracting 1 to the pixel value. Our method is imperceptible to Human Visual System (HVS) because it provides minimum degradation in image quality due to only +1 or -1 ch...

2012
Budi Sugandi Hyoungseop Kim Joo Kooi Tan Seiji Ishikawa

Automatic detection and tracking of moving object is very important task for humancomputer interface (Black & Jepson, 1998), video communication/expression (Menser & Brunig, 2000), and security and surveillance system application (Greiffenhagen et al., 2000) and so on. Various imaging techniques for detection, tracking and identification of the moving objects have been proposed by many research...

2013
Shaowei Weng Shu-Chuan Chu Nian Cai Rongxin Zhan

By employing invariant relation between the mean value of the first (n − 1) pixels and the last one pixel (also called the remaining pixel) for every image block containing n pixels, a new reversible watermark scheme capable of mostly carrying 2n−3 bits into one n-sized image block in a single embedding process is presented in this paper. First, the mean value of the first (n − 1) pixel is calc...

2017
Rajkumar Yadav Ravi Saini

In this paper, a new Image Steganography method based on the spatial Domain is proposed. It does not use the known LSB’s bit to embed the message. It uses the bit 7 of pixel value of cover image. The main idea is to make the bit 7 of pixel value equal to the message bit by adding or subtracting 1 to the pixel value. Our method is imperceptible to HVS because it provides minimum degradation in i...

Journal: :Higher-Order and Symbolic Computation 2003
Thomas W. Reps Louis B. Rall

Tools for computational differentiation transform a program that computes a numerical function F(x) into a related program that computes F ′(x) (the derivative of F). This paper describes how techniques similar to those used in computational-differentiation tools can be used to implement other program transformations—in particular, a variety of transformations for computational divided differen...

Journal: :تحقیقات اقتصادی 0
علیرضا عرفانی دانشگاه سمنان

in this paper we investigate the long memory of tehran securities price index and fit arfima model using 970 daily data since 1382/1/6 until 1386/4/17. furthermore, we compare the forecasting performance of arfima and arima models. the results show that the series is a long memory one and therefore it can become stationary by fractional differencing. we obtaine the fractional differencing param...

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