Chaotic Scan: A Low Complexity Video Transmission System for Efficiently Sending Relevant Image Features

Efficient and cryptographically secure pseudorandom number generators based on chains of hybrid cellular automata maps

“…As discussed in [11] the mask vector can be optimized to maximize the period of the operating cycle as required in certain specialized application (when the PRNG acts as a chaotic counter) [13] but for the purpose of good PRNG arbitrary mask vectors can be chosen (representing part of the key, along with initial register states and cell/rule functions). The architecture of the HCA and its simplified notation are given in Fig.…”

Compressive image acquisition in modern CMOS IC design

“…with the zero mean and normal distribution. For the Rademacher scheme, using expression (7), and assuming the uniform distribution of the input image as discussed, the maximum measurement amplitude is…”

“…Using alternate scanning patterns, such as the Z-curve or Hilbert curve [3], followed by quadtree decomposition results in the compressive image acquisition schemes presented in [4], [5], and [6]. The work presented in [7] uses a random scan pattern (chaotic scan) in order to achieve compressive acquisition. These techniques can result in very efficient compression levels of less than 1 bit per pixel.…”

Chaotic image encryption using pseudo-random masks and pixel mapping

“…Among them, the most widely used transform methods are the fractional Fourier transform (FRT), extended FRT, gyrator transform, and Fresnel transform. As some properties of chaos are very similar to those of a secure encryption scheme, such as high sensitivity to initial values and system parameters, chaotic maps have been used to design image encryption schemes [7][8][9][10][11]. Meanwhile, many approaches to analyzing the security levels of existing encryption schemes have been presented [9,[12][13][14][15][16][17][18].…”