The novel technique for image retrieval using the colortexture features extracted from images based on vector quantization with Kekre’s fast codebook generation is proposed. This gives better discrimination capability for Content Based Image Retrieval (CBIR). Here the database image is divided into 2x2 pixel windows to obtain 12 color descriptors per window (Red, Green and Blue per pixel) to fo...

An edge-preserving method for image resizing (decimation and interpolation) is proposed. The decimation is considered as an orthogonal projection with respect to the chosen interpolation basis. The latter one is formed in a spline-like manner as a linear combination of B-splines of different degrees. This combination is optimized in such a way that the small image details are preserved. Conside...

The paper is aimed for a wavelet based steganographic/watermarking technique in frequency domain termed as WASTIR for secret message/image transmission or image authentication. Number system conversion of the secret image by changing radix form decimal to quaternary is the pre-processing of the technique. Cover image scaling through inverse discrete wavelet transformation with false Horizontal ...

A recently proposed approach, called seam carving, has been widely used for content-aware resizing of images and videos with little to no perceptible distortion. Unfortunately, for high-resolution videos and large images it is not computationally feasible to do the resizing in real-time using small-scale CPU systems. In this paper, we exploit highly parallel computational capabilities of CUDA-e...

ABSTRACT: Image scaling is the process of resizing a digital image. It is one of the most important methods used in various applications such as sharpening of an image, image zooming, preserving edge structures in an image and so on. This paper proposes an efficient scaling algorithm for designing an image scaling processor. The proposed scaling algorithm consists of two combined prefilters and...

Recent growth in the area of digital communications has been fueled by new and exciting communications algorithms to satisfy the ever increasing bandwidth needs. While the majority of the bandwidth requirements are driven by multi-channel voice or data needs, video and imaging communications is becoming both realizable and practical. Additional progress in the area of video and imaging compress...

Nowadays, authorizing the genuineness of an image is a big challenge. For ensuring the trustworthiness of images, a secure hashing method is developed. This method detects the tampering like addition, removal and replacement of any object from the image, unusual color modifications, resizing, and image compression and especially locates the forged area. A hash sequence is generated by extractin...

Human eye is perceptually more sensitive to certain colors and intensities and objects with such features are considered more salient. Detection of Salient image regions is useful in applications such as object based image retrieval, adaptive content delivery, adaptive region-of interest based image compression, and smart image resizing .This problem can be handled by mapping the pixels into va...

In this paper, an efficiently DWT-based watermarking technique is proposed to embed gray-scale logos as watermark in images to attest the owner identification and discourage the unauthorized copying. The method transforms both the host image and watermark into the discrete wavelet domain where their coefficients are fused adaptively based on Human Visual System (HVS) model to hide a higher ener...

Human eye is perceptually more sensitive to certain colors and intensities and objects with such features are considered more salient. Detection of Salient image regions is useful in applications such as object based image retrieval, adaptive content delivery, adaptive region-of interest based image compression, and smart image resizing .This problem can be handled by mapping the pixels into va...