We present here an approach to find the exact position of some feature units related to human face images. We use the horizontal information in most significant bit planes of images to accomplish the task. Finding location of facial feature units is of importance as most human face recognition approaches take it as initial point. The prominent feature units in a face are eyes, nostrils and lips...

Learning the distribution of natural images is one of the hardest problems in machine learning. We break down this challenging problem by mapping images into a hierarchy of binary images (bit-planes). In this representation, the top bitplane is critical, having fluctuations in structures over a vast range of scales. The ones below go through a gradual stochastic heating process to disorder. We ...

We propose a new concept which is derived from the cryptography, the substitution of bits in the image and the visual cryptography method. Given some secret data and a set of cover images, in the proposed scheme the secret data is encrypted by the administrator, after that we select the random bit planes of the cover images using the pseudo-random sequence and modify the cover image based on th...

Bit-plane slicing is a method which divides the image into many binary image planes and categorizes the image data into most significant and least significant information. In this paper a new edge detector using the most significant image data to detect the edges in the bacterial images is developed. This proposed method finds the edges in the higher order bit-planes using contouring technique ...

This paper presents a new method of lossless image compression. An image is characterized by homogeneous parts. The bit planes, which are of high weight are characterized by sequences of 0 and 1 are successive encoded with RLE, whereas the other bit planes are encoded by the arithmetic coding (AC) (static or adaptive model). By combining an AC (adaptive or static) with the RLE, a high degree of...

This paper presents two methods for encryption and decryption of images using XOR operation. In the first method the original image is encrypted by the key image using XOR operation and decryption process also uses the same key image with XOR operation. In the second method one of the bit planes of the key image is used for encrypting the bit planes of the original image and shuffling is done f...

In this paper, we propose a new efficient bit-plane coding method for fine granular scalable (FGS) video coding. The general structure of the proposed bit-plane coding method is based on the traditional bit-plane coding scheme in MPEG-4 FGS. However, to enhance coding efficiency of bit-plane encoding, we apply an efficient probability estimation scheme through employing the binary arithmetic co...

We propose a block-based wavelet codec in which motion vector estimation and motion residual encoding are performed within a wavelet domain. By interpolation on dyadic wavelet transform, we show that motion vector estimation in the wavelet domain can achieve sub-pixel precision. To improve PSNR performance at low bit rates, we propose a bit-plane-based rate-distortion (R-D) optimization algorit...

Region Of Interest (ROI) coding is one of the innovative functionalities supported by JPEG 2000, the new ISO/ITU-T still image coding standard developed by the Joint Photographic Experts Group (JPEG). It enables a non-uniform distribution of the image quality between a selected region (the ROI) and the rest of the image (background). This feature is obtained by scaling background coefficients i...

This paper proposes a content authentication scheme for MPEG-4 FGS (fine-granular scalability) video based on digital fragile watermarking using BitplaneCoding Watermarking (BCW). In embedding procedure, the watermark information is embedded into every 8×8 block of residual bit-planes in the enhancement layer while encoding to MPEG-4 FGS video stream. The watermark bit is modulated by modifying...