International Journal of Science, Engineering and Computer Technology

Manju Devi ¹, Uma Mehta ¹

Affiliations
1 Department of Computer Science, JCDMCOE, Sirsa, Haryana, IN

Abstract

Due to the rapid growth of digital communication and multimedia application, security becomes an important issue of communication and storage of images. As the use digital techniques for transmitting and storing images are increasing, it becomes an important issue that how to protect the confidentiality, integrity and authenticity of images. There are various algorithm which are discovered from time to time to encrypt the images to make images more secure. In this paper we survey on exiting work. Which is used different algorithm for image encryption It additionally focuses on the functionality of Image encryption algorithm.

Keywords

Asymmetric Key Cryptography, Decryption, Encryption, Image Encryption, Symmetric Key Cryptography.AES, DES, RC4.

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Manju Devi ¹, Uma Mehta ¹

Affiliations
1 Department of Computer Science, JCDMCOE, Sirsa, Haryana, IN

Abstract

Images are an important form of data and are used in almost every application. Some applications cannot use images directly due to the large amount of memory space needed to store these images. Image compression is to reduce irrelevance and redundancy of the image data in order to be able to store or transmit data in an efficient form. Compression of images plays an important role in storing the images .in this paper. In this paper we analyze different types of existing method of image compression. Now there is question may be arise that how to image compress and which types of technique is used. Basically lossy and lossless image compression technique are used for compress the images.

Keywords

Image Compression, Lossy and Lossless, Quantization, Optimization.

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