Computer - Engineering

Color images have the potential to convey more information than a monochrome or black and white images. Each pixel for a true color image is stored as values of red, green, and blue. However, the RGB color model is not an efficient representation for compression task because there is significant correlation between RGB color components. Therefore, for compression, luminance-chrominance representations (such as YIQ) is implemented.

Steganography is considered one of the widely used methods for hiding information; it hides secret data in digital cover without clear suspicion.This work focus on studying two methods for hiding any secret data type in the audio signal. First, the audio signal is transformed to frequency domain by using quick Fourier transform that depended on the reduction of time and number of mathematical operations.        Two hiding methods are designed to embed secret data bits in the phase domain coefficients of audio signal.

With the recent growth and development of the network and internet usage in colleges, companies and other network places, it is important to find some way to improve the reliability and efficiency of using these networks.