scholarly journals Scanning MEMS Mirror for High Definition and High Frame Rate Lissajous Patterns

Micromachines ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 67 ◽  
Author(s):  
Yeong-Hyeon Seo ◽  
Kyungmin Hwang ◽  
Hyunwoo Kim ◽  
Ki-Hun Jeong
Keyword(s):  
Laser Scanning ◽  
Mechanical Stability ◽  
Micro Electro Mechanical System ◽  
Frame Rate ◽  
High Definition ◽  
High Frame Rate ◽  
Frequency Selection ◽  
Electrostatic Mems ◽  
Scanning Imaging ◽  
Potential Use

Scanning MEMS (micro-electro-mechanical system) mirrors are attractive given their potential use in a diverse array of laser scanning display and imaging applications. Here we report on an electrostatic MEMS mirror for high definition and high frame rate (HDHF) Lissajous scanning. The MEMS mirror comprised a low Q-factor inner mirror and frame mirror, which provided two-dimensional scanning at two similar resonant scanning frequencies with high mechanical stability. The low Q inner mirror enabled a broad frequency selection range. The high definition and high frame rate (HDHF) Lissajous scanning of the MEMS mirror was achieved by selecting a set of scanning frequencies near its resonance with a high greatest common divisor (GCD) and a high total lobe number. The MEMS mirror had resonant scanning frequencies at 5402 Hz and 6702 Hz in x and y directions, respectively. The selected pseudo-resonant frequencies of 5450 Hz and 6700 Hz for HDHF scanning provided 50 frames per second with 94% fill factor in 256 × 256 pixels. This Lissajous MEMS mirror could be utilized for assorted HDHF laser scanning imaging and display applications.

scholarly journals Frequency selection rule for high definition and high frame rate Lissajous scanning

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Kyungmin Hwang ◽  
Yeong-Hyeon Seo ◽  
Jinhyo Ahn ◽  
Pilhan Kim ◽  
Ki-Hun Jeong
Keyword(s):  
Selection Rule ◽  
Frame Rate ◽  
High Definition ◽  
High Frame Rate ◽  
Frequency Selection

scholarly journals Realism in Film: Less is More

Dialogue ◽  
2017 ◽  
Vol 56 (1) ◽  
pp. 131-141 ◽  
Author(s):  
JIRI BENOVSKY
Keyword(s):  
Negative Impact ◽  
Frame Rate ◽  
Test Case ◽  
High Definition ◽  
High Frame Rate ◽  
Less Is More

What is realism in film? Focusing on a test case of High Frame Rate (HFR) high-definition movies, I discuss in this article various types of realism as well as their inter-relations. Precision, recessiveness of the medium, transparency, and ‘Collapse’ are discussed and compared. At the end of the day, I defend the claim that ‘less is more’ in the sense that more image precision can actually have a negative impact on storytelling.

scholarly journals Suporte de Informações Georreferenciadas de Alta Resolução para Implantação de Infraestrutura e Planejamento Territorial (Support of Georeferenced Information of High Resolution for Implementation of Infrastructure and Territorial Planning)

2014 ◽  
Vol 7 (4) ◽  
pp. 755
Author(s):  
José Almir Cirilo ◽  
Fellipe Henrique Borba Alves ◽  
Luis Augusto Clemente Da Silva ◽  
João Henrique De Andrade Lima Campos
Keyword(s):  
Public Management ◽  
Laser Scanning ◽  
Flood Control ◽  
Spatial Databases ◽  
High Definition ◽  
Internal Development ◽  
Territorial Planning ◽  
Scanning Lidar ◽  
Reducing Costs ◽  
Potential Use

A interiorização do desenvolvimento e o crescimento das cidades requer conhecimento mais aprimorado do terreno para que essa expansão se faça com qualidade, minimizando os impactos sobre os recursos naturais e os custos decorrentes das intervenções. Este artigo avalia o potencial do uso de bases de dados espaciais, particularmente o SRTM e a varredura a laser, como suporte a estudos e projetos destinados à implantação de infraestrutura e ações de previsão e controle de inundações. Também é apresentado o programa Pernambuco Tridimensional, destinado a gerar base de dados espaciais de alta definição para todo o território do estado, por meio de varredura a laser.   ABSTRACT: Internal development and growth of cities require improved knowledge of the terrain to support those expansions with quality, minimizing impacts on natural resources and reducing costs of the interventions. This paper evaluates the potential use of spatial databases, particularly the SRTM and laser scanning, as input for supporting studies and projects for the deployment of infrastructure and actions for forecasting and flood control. The article also presents the Tridimensional Pernambuco Program, to generate spatial database of high definition for the entire territory of the Pernambuco state, by means of laser scanning. Keywords: Remote Sensing, Geoprocessing, Public Management, Laser Scanning, LiDAR. 

Measurement of regional pulse wave velocity using very high frame rate ultrasound

Choonpa Igaku ◽  
2015 ◽  
Vol 42 (6) ◽  
pp. 701-709
Author(s):  
Hideyuki HASEGAWA ◽  
Kazue HONGO ◽  
Hiroshi KANAI
Keyword(s):  
Pulse Wave Velocity ◽  
Wave Velocity ◽  
Pulse Wave ◽  
Frame Rate ◽  
High Frame Rate ◽  
Very High

scholarly journals High frame-rate multichannel beam-scanning microscopy based on Lissajous trajectories

2014 ◽  
Vol 22 (20) ◽  
pp. 24224 ◽  
Author(s):  
Shane Z. Sullivan ◽  
Ryan D. Muir ◽  
Justin A. Newman ◽  
Mark S. Carlsen ◽  
Suhas Sreehari ◽  
...  
Keyword(s):  
Frame Rate ◽  
Scanning Microscopy ◽  
Beam Scanning ◽  
High Frame Rate ◽  
Lissajous Trajectories

scholarly journals Limits of subjective and objective vection for ultra-high frame rate visual displays

Displays ◽  
2020 ◽  
Vol 64 ◽  
pp. 101961 ◽  
Author(s):  
Séamas Weech ◽  
Sophie Kenny ◽  
Claudia Martin Calderon ◽  
Michael Barnett-Cowan
Keyword(s):  
Frame Rate ◽  
Visual Displays ◽  
High Frame Rate
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