Journal of Al-Qadisiyah for Computer Science and Mathematics

The currency has a great meaning in everyday life. Thus currency recognition has gained a great interest for many researchers. The researchers have suggested diverse approaches to improve currency recognition. Based on strong literature survey, image processing can be considered as the most widespread and effective technique of currency recognition. This paper introduces some close related works of paper-currency recognition. This paper has explained a variety of different currency recognition systems. The applications have used the power of computing to differentiate between different types of currencies with the appropriate layer. Choosing the proper feature would improve overall system performance. The main goal of this work is to compare previous papers and literatures through reviews these literatures and identify the advantages and disadvantage for each method in these literatures. The results were summarized in a comparison table that presented different ways of reviewing the technology used in image processing to distinguish currency papers.

The currency has a great meaning in everyday life. Thus currency recognition has gained a great interest for many researchers. The researchers have suggested diverse approaches to improve currency recognition. Based on strong literature survey, image processing can be considered as the most widespread and effective technique of currency recognition. This paper introduces some close related works of paper-currency recognition. This paper has explained a variety of different currency recognition systems. The applications have used the power of computing to differentiate between different types of currencies with the appropriate layer. Choosing the proper feature would improve overall system performance. The main goal of this work is to compare previous papers and literatures through reviews these literatures and identify the advantages and disadvantage for each method in these literatures. The results were summarized in a comparison table that presented different ways of reviewing the technology used in image processing to distinguish currency papers.

The continuous probability Rayleigh distribution is one of the important Is an important distribution that can be used To analyze signal data and statistical error data as well as time to failure, so we work on modifying two parameters Rayleigh (α,θ) into three parameters one’s (α,θ,λ) through exponentiated, the new p.d.f obtained, also the formula for rth moments about origin is derived, to be used in estimating of parameters and also of reliability function. All derivation required were explained and the estimators by maximum likelihood and moments were obtained using different sets of initial values and the replicate of each experiment is (R=1000), the results are compared by using mean squared error (MSE).

In this paper, we are studying three simulation methods to generate observation for multivariate normal distribution, and these methods are: Matlab mvnrnd, decomposition and conditional methods, and we put simulation programs for each method by Matlab 2015a software, and comparison between these methods by depend on many criterions as MSE, AIC, skw, kur. As well as the run speed criterion for each method to get the best method

Security has become very important aspect during data transmission and storage. Cryptography is used to maintain security. Columnar Transportation Technique is one of the most common methods that used in image encryption. In this paper, we proposed an encryption technique based on columnar Transportation and bits reversing, and named the method (CTR). Different colored images are used in the experiments. Experimental results showed that the proposed method is a secure and effective as a color image encryption method.

A 2D matrix that is designed via keeping two points under consideration is QR code, in other words, it stores a large amount of data as compared to 1D barcodes. A Denso-Wave Corporation in Japan has been developed the QR code; the various marker of QR codes over traditional barcodes owns a large storage capacity, read faster, 360-degree reading, printing of small size, correction of error, and supports more languages. The use of QR codes has been expanding over the world because of these benefits. This paper tries to highlight the characteristics, working, significance, and vulnerabilities of the QR codes. After applying the proposed method, the irrelevant positions were detected, then it was removed without any effect on the QR code reading, and these positions are used to hide text or image; indicating that the proposed new method has shown some important characteristics which will affect the security and confidentiality of the QR-code.