Position multiplexing multiple-image encryption using cascaded phase-only masks in Fresnel transform domain Hsuan T. Chang Photonics and Information Laboratory, Department of Electrical Engineering, National Yunlin University of Science and Technology, Douliu Yunlin, 64002 Taiwan Hone-Ene Hwang Department of Electronic Engineering, Chung Chou Institute of Technology, Yuan-lin, 510 Taiwan Cheng-...

1Department of Applied Mathematics, University of Colorado at Boulder, 526 UCB Boulder, CO 80309-0526, U.S.A. 2Institute for Mathematics Applied to Geosciences (IMAGe), The National Center for Atmospheric Research, PO Box 3000 Boulder, CO 80307-3000, U.S.A. 3Computational & Information Systems Laboratory (CISL), The National Center for Atmospheric Research, PO Box 3000 Boulder, CO 80307-3000, U...

The image content detectability and image structure preservation are closely related concepts with undeniable role in image quality assessment. However, the most attention of image quality studies has been paid to image structure evaluation, few of them focused on image content detectability. Examining the image structure was firstly introduced and assessed in Structural SIMilarity (SSIM) measu...

A pilot system for a mammography tele-consultation in TaiChung Veterans General Hospital (TCVGH), Taiwan is proposed in this paper. It is developed and designed based on a distributed system and implemented in a top-down high speed network hierarchy with communication security. It is also integrated with specific diagnostic tools and collaboration awareness tools currently available in TCVGH an...

A u × v matrix A is image partition regular provided that, whenever N is finitely colored, there is some ~x ∈ N with all entries of A~x monochrome. Image partition regular matrices are a natural way of representing some of the classic theorems of Ramsey Theory, including theorems of Hilbert, Schur, and van der Waerden. ∗This author acknowledges support received from the National Science Foundat...

Spatial Analysis and GIS: A Primer Gilberto Câmara, Antônio Miguel Monteiro, Suzana Druck Fucks, Marília Sá Carvalho Image Processing Division, National Institute for Space Research (INPE), Av dos Astronautas 1758, São José dos Campos, Brazil Brazilian Agricultural Research Agency (EMBRAPA), Rodovia Brasília-Fortaleza, BR 020, Km 18, Planaltina, Brazil National School for Public Health , Fundac...

In this paper nonparametric statistical technology is derived for estimating with confidence a 3D configuration of points from noncalibrated camera views of such a configuration. This is applied to pattern recognition of a spatial scene, from multiple views, in absence of occlusions. keywords scene reconstruction, pinhole camera views, image analysis, projective shape data analysis AMS subject ...

This paper presents image processing algorithms designed to analyse the colour CIE Lab histogram of high resolution images of paintings. Three algorithms are illustrated which attempt to identify colour clusters, cluster shapes due to shading and finally to identify pigments. Using the image collection and pigment list of the National Gallery London large numbers of images within a restricted p...

With many visual speech animation techniques now available, there is a clear need for systematic perceptual evaluation schemes. We describe here our scheme and its application to a new video-realistic (potentially indistinguishable from real recorded video) visual-speech animation system, called Mary 101. Two types of experiments were performed: a) distinguishing visually between real and synth...

radiologic examination and they account for a large portion of medical image data. For example, 16,110 chest radiographs were performed, resulting in a data volume of 229.9 gigabytes accumulated at the Seoul National University Bundang Hospital in September 2009. Irreversible (“lossy”) image compression appears to be an immediate and effective means to reduce operational costs on transmission a...