The higher order orthogonal iteration (HOOI) is used for a single-frame and multi-frame space-variant blind deconvolution (BD) performed by factorization of the tensor of blurred multi-spectral image (MSI). This is achieved by conversion of BD into blind source separation (BSS), whereupon sources represent the original image and its spatial derivatives. The HOOI-based factorization enables an e...

Confidentiality is the most important aspect of information security. Visual Cryptography (VC) is a decryption-less cryptographic technique where human eye is proficient in decrypting the secret information. VC is implemented for binary, gray scale and color images, Color image VC schemes are commonly implemented using Cyan-Magenta-Yellow-Black (CMYK) model that requires a computational device ...

Recent years have seen tremendous increase in the generation, transmission, and storage of color images. A new lossless image compression method for progressive-resolution transmission of color images is carried out in this paper based on spatial and spectral transforms. Reversible wavelet transforms are performed across red, green, and blue color sub bands first. Then adaptive spectral transfo...

This paper presents an image compression using singular value decomposition (SVD) by extracting the red, green, and blue (RGB) channel colors. Image is needed in development of various multimedia computer services applications for example telecommunications storage technologies. Now a days, video technology, digital broadcast codec teleconferencing become popular always requires high process di...

Abstract Object recognition with visual computer techniques is a process necessary to detect different objects in three-dimensional image get precise results. Color extraction Red Green Blue (RGB), Red, Green, (HSV) and other color spaces can produce high accuracy minimize the number of parameters speed computing process. In this study diagnosis pneumonia was based on CT scan lungs segmentation...

Conventional approach in single-chip digital cameras is a use of color lter arrays (CFA) in order to sample di erent spectral components. Demosaicing algorithms interpolate these data to complete red, green, and blue values for each image pixel, in order to produce an RGB image. In this paper we propose a novel demosaicing algorithm for the Bayer CFA. For the algorithm design we assume that the...

Data security is an important concern today. In today’s world data has been exchanged in several means like mail, data uploading, video exchange, image exchange etc. In this digital world data exchange and uploading is much more easy and convenient. So there is a chance of data alteration or unauthorized access may possible. There are several security mechanisms for textual data and images but ...

Diabetic retinopathy lesion detection such as exudate in fundus image of retina can lead to early diagnosis of the disease. Retinal image includes dark areas such as main blood vessels and retinal tissue and also bright areas such as optic disk, optical fibers and lesions e.g. exudate. In this paper, a multistage algorithm for the detection of exudate in foreground is proposed. The algorithm se...

In this paper a self organized legal document/content authentication, copyright protection in composite domain has been proposed without using any external information. Average values of transformed red and green components in frequency domain generated through wavelet transform are embedded into the blue component of the color image matrix in spatial domain. A reverse transformation is made in...

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...