Search results for " Color"

Unmanned Aerial Vehicle (UAV) operated spectral camera system for forest and agriculture applications

2011

VTT Technical Research Centre of Finland has developed a Fabry-Perot Interferometer (FPI) based hyperspectral imager compatible with the light weight UAV platforms. The concept of the hyperspectral imager has been published in the SPIE Proc. 7474 and 7668. In forest and agriculture applications the recording of multispectral images at a few wavelength bands is in most cases adequate. The possibility to calculate a digital elevation model of the forest area and crop fields provides means to estimate the biomass and perform forest inventory. The full UAS multispectral imaging system will consist of a high resolution false color imager and a FPI based hyperspectral imager which can be used at …

Effects of Soil Solarization With Different Plastic Films and Fumigation With Combination of 1,3-Dichloropropene and Chloropicrin on Strawberry Prote…

2012

La derechización del mundo / 3

2007

A New Comorbidity in Periodontitis: Fusobacterium nucleatum and Colorectal Cancer

2022

There is very recent and strong evidence relating Fusobacterium nucleatum to colorectal cancer. In this narrative review, we update the knowledge about gingival dysbiosis and the characteristics of Fusobacterium nucleatum as one of the main bacteria related to periodontitis. We provide data on microbiome, epidemiology, risk factors, prognosis, and treatment of colorectal cancer, one of the most frequent tumours diagnosed and whose incidence increases every year. We describe, from its recent origin, the relationship between this bacterium and this type of cancer and the knowledge and emerging mechanisms that scientific evidence reveals in an updated way. A diagram provided synthesizes the pa…

Clustering techniques for personal photo album management

2009

In this work we propose a novel approach for the automatic representation of pictures achieving at more effective organization of personal photo albums. Images are analyzed and described in multiple representation spaces, namely, faces, background and time of capture. Faces are automatically detected, rectified and represented projecting the face itself in a common low-dimensional eigenspace. Backgrounds are represented with low-level visual features based on RGB histogram and Gabor filter bank. Faces, time and background information of each image in the collection is automatically organized using a mean-shift clustering technique. Given the particular domain of personal photo libraries, wh…

Robust Light Field Watermarking by 4D Wavelet Transform

2020

Unlike common 2D images, the light field representation of a scene delivers spatial and angular description which is of paramount importance for 3D reconstruction. Despite the numerous methods proposed for 2D image watermarking, such methods do not address the angular information of the light field. Hence the exploitation of such methods may cause severe destruction of the angular information. In this paper, we propose a novel method for light field watermarking with extensive consideration of the spatial and angular information. Considering the 4D innate of the light field, the proposed method incorporates 4D wavelet for the purpose of watermarking and converts the heavily-correlated chann…

Strong chromatic index of products of graphs

2007

Graphs and Algorithms

Reproducibilidad en la medición del color «in vitro» e «in vivo» mediante colorímetros específicos para uso dental

2005

Introduccion: La medicion del color dental de la forma mas objetiva y reproducible posible, es uno de los problemas en Odontologia. La reciente aparicion de colorimetros especialmente concebidos para la toma del color dental pueden ser de ayuda para este fin. Objetivo: Evaluar la fiabilidad en la reproducion de las mediciones del color de tres colorimetros, disenados para la toma del color dental. Material y metodo: Se midio el color tres veces sucesivas a cada uno los doce dientes anteriores de diez pacientes y se tomo cinco veces el color de cada uno de los dieciseis dientes de tres guias Vitapan Classical. Resultados: La reproducibilidad para la medicion de las guias vario entre 72, 25 y…

Genetic location and biochemical characterization of eye-colour mutants from natural populations of Drosophila melanogaster

1990

From six captures of Drosophila melanogaster carried out in three different habitats (cellar, vineyard, and pinewood) in two different seasons of the year (spring and autumn), 60 eye-colour mutations were isolated, which were reduced to 29 loci by means of allelism tests within and between populations. Forty-five of these mutations were analyzed genetically and biochemically; of these 33 turned out to be previously described mutants and mapped to a total of 17 loci. Twelve new mutants were discovered and they mapped to 12 new loci, distributed on chromosomes X, II, and III. The eye-colour mutants show large effects on the red and brown pigments. The high variability of the eye-colour loci …

In Vitro Techniques

2006

Driven in part by the development of genomics, proteomics, and bioinformatics as new disciplines, there has been a tremendous resurgence of interest in physical methods to investigate macromolecular structure and function in the context of living cells. This volume in Methods in Cell Biology is devoted to biophysical techniques in vitro and their applications to cellular biology. The volume covers methods-oriented chapters on fundamental as well as cutting-edge techniques in molecular and cellular biophysics.This book is directed toward the broad audience of cell biologists, biophysicists, pharmacologists, and molecular biologists who employ classical and modern biophysical technologies or …