In a visual cryptography scheme, a secret image is encoded into n shares, in the form of transparencies. The shares are then distributed to n participants. Qualified subsets of participants can recover the secret image by superimposing their transparencies, but non-qualified subsets of participants have no information about the secret image. Pixel expansion, which represents the number of subpi...

Abstract This work aims to characterize ultra-high dose rate pulses (UHDpulse) electron beams using the hybrid semiconductor pixel detector. The Timepix3 (TPX3) ASIC chip was used measure composition, spatial, time, and spectral characteristics of secondary radiation fields from pulsed 15–23 MeV beams. challenge is develop a single compact detector that could extract spectrometric dosimetric in...

objectives: the attentional control scale is a self- report questionnaire that assesses individual differences in attentional control. despite its extensive use, the psychometric properties of the persian version of the acs are not well understood. thus, the present study aimed at investigating the psychometric properties of the attentional control scale and its relationship with symptoms of an...

Recently, Nikolova and Steidl have proposed a hue range preserving histogram specification method which outputs weighted average of two images generated by additive (shifting) multiplicative (scaling) algorithms, where the weights are fixed for all pixels in an image. In this paper, we propose selecting one algorithms at each pixel adaptively. Therefore, there is no need to prepare combini...

Many researchers adopt Local Binary Pattern for pattern analysis. However, the long histogram created by Local Binary Pattern is not suitable for large-scale facial database. This paper presents a simple facial pattern descriptor for facial expression recognition. Local pattern is computed based on local gradient flow from one side to another side through the center pixel in a 3x3 pixels region...

This document describes a capstone learning exercise designed for undergraduates enrolled in an introductory geospatial tools course. The overarching theme of the exercise, Colorado 14ers, Pixel by Pixel, is mountain geography. While immersed in a digital mountainous landscape, students explore topics of geomorphology and geomorphometry and discover how it is possible for a summit that rises we...