Search results for "Image."
showing 10 items of 6790 documents
Author Correction: Evaluation of three methods for biomass estimation in small invertebrates, using three large disparate parasite species as model o…
2018
Invertebrate biomass is considered one of the main factors driving processes in ecosystems. It can be measured directly, primarily by weighing individuals, but more often indirect estimators are used. We developed two indirect and non-destructive approaches to estimate biomass of small invertebrates in a simple manner. The first one was based on clay modelling and the second one was based on image analysis implemented with open-source software. Furthermore, we tested the accuracy of the widely used geometric approximation method (third method). We applied these three different methods to three morphologically disparate model species, an acanthocephalan worm, a crustacean and a flatworm. To …
The Networked Utilisation of Satellite Images and Geospatial Technology in Journalism
2022
Satellite technology has become increasingly affordable and accessible in the past few decades. This has enabled many newsrooms to engage with genuinely remote journalism. This chapter explores the networked nature of satellite journalism and investigates its inclusion of experts and citizens outside newsrooms. Satellite journalism uses satellite-borne technology either as a (1) part of storytelling or (2) source of information. Academic research on the topic is scarce, so this chapter builds a base of knowledge on the contemporary practices, limitations and ethics—as well as directions of future development—of satellite journalism. By interviewing six journalists and one earth observation …
Tekniikoita digitaalisten valokuvien aitouden arvioimiseen
2009
Ollari, Ilkka Tietojärjestelmätieteen kandidaatintutkielma / Ilkka Ollari Jyväskylä: Jyväskylän yliopisto, 2009, 28 s. Kandidaatintutkielma Digitaalisten valokuvien muokkaamisesta on tullut hyvin helppoa ja yleistä, mikä on osaltaan johtanut valokuvien luotettavuuden heikentymiseen. Tässä tutkielmassa käsittelen kirjallisuuskatsauksen pohjalta erilaisia valokuvien aitouden arvioimiseen tarkoitettuja tekniikoita. Tutkin mm. sitä, kuinka luotettavasti kyseisillä tekniikoilla valokuvien aitous voidaan varmistaa, ja minkälaisia rajoitteita eri tekniikoilla on. Tekniikat voidaan jakaa aktiivisiin ja passiivisiin. Ensin mainitusta ryhmästä käsittelen vesileimoja, jotka ovat merkittävin aktiivist…
Violence et images du corps
2010
International audience
Conception en technologie CMOS d'un Système de Vision dédié à l'Imagerie Rapide et aux Traitements d'Images
2008
Our work presented in this thesis focuses on the design, testing and implementation of monolithics CMOS image smart sensors : The principle, performance and limitations. The hardware implementation of a vision smart system is the central link. HISIC is High Speed Image Capture with processing at pixel level. An experimental platform for instrumentation and evaluation of retina operators was conducted during this thesis. After a state of the smart sensors and CMOS retinas, the second part is dedicated to the study and design of the pixel image sensor HISIC. Two circuits were realized in CMOS technology. The first identied a new type of photo-detector, and the second, to create a prototype em…
Visual Contrast Modulates Operant Learning Responses in Larval Zebrafish.
2018
The larval zebrafish is a promising vertebrate model organism to study neural mechanisms underlying learning and memory due to its small brain and rich behavioral repertoire. Here, we report on a high-throughput operant conditioning system for zebrafish larvae, which can simultaneously train 12 fish to associate a visual conditioned pattern with electroshocks. We find that the learning responses can be enhanced by the visual contrast, not the spatial features of the conditioned patterns, highlighted by several behavioral metrics. By further characterizing the learning curves as well as memory extinction, we demonstrate that the percentage of learners and the memory length increase as the co…
Imagen de la tecnología transmitida por los textos de educación tecnológica
2006
Resumen tomado de la publicación Expone la transmisión por los textos de tecnología de una visión simplista y socialmente neutra de la tecnología como ciencia aplicada, ignorando o tratando muy superficialmente las complejas relaciones ciencia tecnología sociedad ambiente (CTSA). Valencia Universidad de León. Facultad de Educación. Servicio de Biblioteca; Campus de Vegazana, s. n.; 24071 León; Tel. +34987291146; Fax +34987291145; bufed@unileon.es; bufed1@unileon.es ESP
I look but do I see? : the application of visual design grammar in an introductory image analysis discussion course
2004
Development and characterisation of polymer composite materials with bio-inspired functions
2018
Promocijas darbs ir izstrādāts disertācijas veidā fizikas nozarē materiālu fizikas apakšnozarē. Pētījums tika veikts LU Materiālu mehānikas institūtā. Darbs saistīts ar aktuālu un jaunu pētījumu virzienu: bioinspirēto funkciju tālāku attīstīšanu slodzi nesošos kompozītos. Tās ir mehānisku triecienu vizuālās indikācijas un polimēru matricas vaskulārās pašdziedināšanas funkcijas. Šīs funkcijas tika nodrošinātas, izveidojot viedus slāņus un iebūvējot tos kompozītā. Pētījumā tika noskaidrotas piemērotās pārbaužu secības, attīstītas kvantitatīvas metodes un mehānisks modelis, lai novērtētu jauno funkciju efektivitāti kompozītos. Ir pierādīta funkciju augstā efektivitāte un spēja uzlabot slodzi n…