RC6, MRC6, and Rijndael are three block cipher algorithms. Different types of Bitmap images are encrypted with each of the three encryption algorithms. Visual inspection is not enough on judging the quality of encrypted images. So, other measuring factors are considered based on: measuring the maximum deviation between the original and the encrypted images, measuring the correlation coefficient...

In present times, Due to the rapidly growth of digital and multimedia applications, more multimedia data are developed and transmitted through the networks in ,art, entertainment, advertising, education, training and commercial areas, which may have important information that should not be accessed by the general users. Therefore issue of protecting the confidentiality, integrity, security, pri...

The purpose of this paper color images with complex background for text and non-text segmentation is to propose a new system. The existing text extraction methods in the case of images with complex background do not work efficiently. Locating text in case of variation in style, color, as well as complex image background makes text reading from images challenging. Here the approach used is based...

Colors are important for human communicating with the daily encountered objects as well as his species, these colors should be represented formally and numerically within a mathematical formula so it can be projected on device/ computer storage and applications, this mathematical representation is known as color model that can hold the color space, by the means of color’s primary components (Re...

In this work, a new scheme of image encryption based on chaos and Fast Walsh Transform (FWT) has been proposed. We used two chaotic logistic maps and combined chaotic encryption methods to the two-dimensional FWT of images. The encryption process involves two steps: firstly, chaotic sequences generated by the chaotic logistic maps are used to permute and mask the intermediate results or array o...