Information security is indispensable in the transmission of multimedia data. While accumulating and distributing such data, access data from a third person real challenging issue. hiding plays an important role. Scramble before it carrier media gives enhanced level for In this paper, bit plane slicing used to represent input image with eight planes at bit-level instead pixel-level. As least si...

In this paper we present Fast Perceptual Quantization (FPQ), a novel procedure to quantize and code audio signals. It employs the same psychoacoustics principles used in the popular MPEG/Audio coders, but substantially simplifies the complexity and computational needs of the encoding process. FPQ is based on defining a hierarchy of privileged quantization values so that the masking threshold ca...

As a new representation technique, collaboration representation is used to represent the test sample with all training samples from all classes. Plurality voting is one of the most widely used combination strategies in pattern recognition. This paper presents a new and an efficient face recognition approach using plurality voting and collaboration representation based on the binary bit-plane im...

Visual Cryptography Scheme (VCS) is an encryption method that works on human visual system. It encrypts a secret image into n shares and decryption can be done only by stacking k or more share images without any computation. A new secret sharing scheme with meaningful shares using (k,n)-threshold visual cryptography and digital watermarking for grayscale images based on bit plane encoding is pr...

Hiding capacity is very important for efficient covert communications. For JPEG2000 compressed images, it is necessary to enlarge the hiding capacity because the available redundancy is very limited. In addition, the bitstream truncation makes it difficult to hide information. In this paper, a high-capacity steganography scheme is proposed for the JPEG2000 baseline system, which uses bit-plane ...

Reversible data hiding continues to attract significant attention in recent years. In particular, an increasing number of authors focus on the higher bit (HSB) plane image which can yield more redundant space. On other hand, lower planes are often ignored for embedding existing schemes due their harm rate. This paper proposes efficient reversible scheme via a double-peak two-layer (DTLE) strate...

The approach described in this paper uses evolutionary algorithms to create multiple-beam patterns for a concentric circular ring array (CCRA) of isotropic antennas using common set excitation amplitudes. flat top, cosec2, and pencil beam are examples patterns. All these designs have an upward angle θ = 0◦. the further created three azimuth planes (φ 0◦, 5◦, 10◦). To necessary patterns, non-uni...