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Papers by pawan kumar
Image compression is very important part of the digital image processing. Image compression is th... more Image compression is very important part of the digital image processing. Image compression is the method of reducing the size of image, which is helpful to increase the storage and transmission performance. In the compression method not only concentrate on reducing the size of image, but also concentrate on the quality and information of the image. Image compressions have more researched area, and many compression standards are place. But still here there is a scope for high compression quality; the JPEG and JPEG2000 standard make use of Discrete cosine transform DCT and Discrete Wavelet transform DWT for compression respectively. Discrete wavelet and Discrete cosine transforms are the common method used in image compression. Wavelet transform are very powerful as compared to Fourier transform, because it have ability to describe any type of signals both in time and frequency domain simultaneously. In this thesis two image compression methods are simulated, the first method is based on Discrete Wavelet transform (DWT), and second method is based on Discrete Cosine transform (DCT). The aim of the thesis as to compress an image using DWT and DCT encoding method, to implement DWT and DCT using VHDL and measure the performance in terms of memory utilization and timing parameters. The first part of the thesis presents an implementation of Discrete Wavelet Transform with HAAR Wavelet and the second part of the thesis presents an implementation of Discrete Cosine Transform. The performance will be measured in term of memory utilization and timing parameters. General Terms Discrete Wavelet transform, Discrete Cosine transform, VHDL.
IJCSIS Papers by pawan kumar
Cloud computing environment is a new way in which web base enable applications provide as a serv... more Cloud computing environment is a new way in which web base enable applications provide as a services for the users with low computational cost through internet. As we store data and it also provide services in distributed environment. Cloud ease its users by providing virtualization technology of resources through internet. Cloud computing is the emerging field, due to this reason the various new techniques are still developing. At current scenario new security challenges were increases for cloud professionals. Due to lack of security in cloud computing environment user of cloud lost it trust in cloud. Multi-tenancy, elasticity, Security Performance and Optimization, etc are various security issues in cloud computing. In this paper we will discuss some of the issue in cloud. This paper also discuss some of the existing security technique for securing a cloud and help researchers and professionals to know about various security threats.
Image compression is very important part of the digital image processing. Image compression is th... more Image compression is very important part of the digital image processing. Image compression is the method of reducing the size of image, which is helpful to increase the storage and transmission performance. In the compression method not only concentrate on reducing the size of image, but also concentrate on the quality and information of the image. Image compressions have more researched area, and many compression standards are place. But still here there is a scope for high compression quality; the JPEG and JPEG2000 standard make use of Discrete cosine transform DCT and Discrete Wavelet transform DWT for compression respectively. Discrete wavelet and Discrete cosine transforms are the common method used in image compression. Wavelet transform are very powerful as compared to Fourier transform, because it have ability to describe any type of signals both in time and frequency domain simultaneously. In this thesis two image compression methods are simulated, the first method is based on Discrete Wavelet transform (DWT), and second method is based on Discrete Cosine transform (DCT). The aim of the thesis as to compress an image using DWT and DCT encoding method, to implement DWT and DCT using VHDL and measure the performance in terms of memory utilization and timing parameters. The first part of the thesis presents an implementation of Discrete Wavelet Transform with HAAR Wavelet and the second part of the thesis presents an implementation of Discrete Cosine Transform. The performance will be measured in term of memory utilization and timing parameters. General Terms Discrete Wavelet transform, Discrete Cosine transform, VHDL.
Cloud computing environment is a new way in which web base enable applications provide as a serv... more Cloud computing environment is a new way in which web base enable applications provide as a services for the users with low computational cost through internet. As we store data and it also provide services in distributed environment. Cloud ease its users by providing virtualization technology of resources through internet. Cloud computing is the emerging field, due to this reason the various new techniques are still developing. At current scenario new security challenges were increases for cloud professionals. Due to lack of security in cloud computing environment user of cloud lost it trust in cloud. Multi-tenancy, elasticity, Security Performance and Optimization, etc are various security issues in cloud computing. In this paper we will discuss some of the issue in cloud. This paper also discuss some of the existing security technique for securing a cloud and help researchers and professionals to know about various security threats.