The sparse representation error (SRE) exists when the images are represented sparsely. SRE is particularly large in unmanned aerial vehicles (UAV) due to disturbance of harsh environment or instability its flight, which will bring more noise. In compressed sensing (CS) system, projected measurement a significant challenge recovery accuracy images. this work, new structure proposed. Following st...

The network-based machine learning algorithm is very powerful tools. However, it requires huge training dataset. Researchers often meet privacy issues when they collect image dataset especially for surveillance applications. A learnable image encryption scheme is introduced. The key idea of this scheme is to encrypt images, so that human cannot understand images but the network can be train wit...

Now a day’s rapid increasing growth of internet and multimedia data, security is main problem in storage and communication of images. The solution of this multimedia data can be solved by using encryption. There are various techniques available to protect the image data from unauthorized access. In this paper, authors reviewed different existing techniques of image encryption and also discussed...

This is Medical image encryption method where Medical image is encrypted by specific rule that is rearrangement of image pixels. In this paper, we present Medical Image encryption and decryption by two dimensional scan Approach. Scan language is based on spatial accessing methodology that can generate a wide range of scanning paths. This paper presents a over view of encryption and decryption a...

The need of exchanging messages and images secretly over unsecure networks promoted the creation of cryptosystems to enable receivers to interpret the exchanged information. In this paper, a particular public key cryptosystem called the ElGamal Cryptosystem is presented considered with the help MATLAB Program to be used over Images. Since the ElGamal cryptosystem over a primitive root of a larg...

This is colour image encryption method where image is encrypted by specific rule that is rearrangement of image pixels. In this paper, we present colour Image encryption and decryption by using partition and scanning pattern which is related to scan approach. SCAN language is based on spatial accessing methodology that can generate a wide range of scanning paths. This paper presents a over view...

This paper describes several techniques to encrypt uncompressed and compressed images. We first present the aims of image encryption. In the usual ways to encryption, all the information is encrypted. But this is not mandatory. In this paper we follow the principles of a technique initially proposed by MAPLES et al. [1] and encrypt only a part of the image content in order to be able to visuali...