scholarly journals A Fast Preprocessing Method for Micro-Expression Spotting via Perceptual Detection of Frozen Frames

2021 ◽  
Vol 7 (4) ◽  
pp. 68
Author(s):  
Vittoria Bruni ◽  
Domenico Vitulano
Keyword(s):  
Visual Perception ◽  
Energy Model ◽  
Video Sequences ◽  
Facial Region ◽  
Preliminary Results ◽  
Motion Energy ◽  
Preprocessing Method ◽  
Preliminary Study ◽  
Micro Expression

This paper presents a preliminary study concerning a fast preprocessing method for facial microexpression (ME) spotting in video sequences. The rationale is to detect frames containing frozen expressions as a quick warning for the presence of MEs. In fact, those frames can either precede or follow (or both) MEs according to ME type and the subject’s reaction. To that end, inspired by the Adelson–Bergen motion energy model and the instinctive nature of the preattentive vision, global visual perception-based features were employed for the detection of frozen frames. Preliminary results achieved on both controlled and uncontrolled videos confirmed that the proposed method is able to correctly detect frozen frames and those revealing the presence of nearby MEs—independently of ME kind and facial region. This property can then contribute to speeding up and simplifying the ME spotting process, especially during long video acquisitions.

scholarly journals Treatments’ Complexity in Dental Care Assistance, Urban Versus Rural Environment - Preliminary Study

2021 ◽  
Vol 26 (1) ◽  
pp. 75-78
Author(s):  
Camelia Ionescu ◽  
Mădălina Adriana Malița ◽  
Viorel Ștefan Perieanu ◽  
Mihai Burlibașa ◽  
Magdalena Natalia Dina ◽  
...  
Keyword(s):  
Dental Care ◽  
Urban Areas ◽  
Rural Environment ◽  
Facial Region ◽  
Starting Point ◽  
Preliminary Study ◽  
Dental Offices ◽  
Care Assistance ◽  
Urban Versus ◽  
Made In

Abstract When talking about dental assistance we actually refer to the prevention, detection and treatment of diseases of the oral and maxillo-facial region which, in most cases, have as a starting point or interest the dento-maxillary system. In this material, we tried to present a comparative study on the typology and complexity of different stages of dental treatments that can be performed in urban areas, compared to various stages of dental treatments that are performed and / or could be made in rural dental offices from in Romania.

Hunter–gatherer subsistence at the end of the Pleistocene: preliminary results from Picareiro Cave, Central Portugal

Antiquity ◽  
2000 ◽  
Vol 74 (285) ◽  
pp. 500-506 ◽  
Author(s):  
Nuno Ferreira Bicho ◽  
Bryan Hockett ◽  
Jonathan Haws ◽  
William Belcher
Keyword(s):  
Late Pleistocene ◽  
Hunter Gatherers ◽  
Preliminary Results ◽  
Animal Remains ◽  
Central Portugal ◽  
Preliminary Study

Excavation at the site of Picareiro Cave in Portugal provides an important and rare sample of animal remains. Preliminary study shows that late Pleistocene hunter–gatherers hunted rabbits, deer and a wide variety of fauna, perhaps during seasonal occupation of the cave.

scholarly journals Synthesis and Anthelmintic Activity of New Thiosemicarbazide Derivatives—A Preliminary Study

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2770 ◽  
Author(s):  
Katarzyna Dziduch ◽  
Przemysław Kołodziej ◽  
Agata Paneth ◽  
Anna Bogucka-Kocka ◽  
Monika Wujec
Keyword(s):  
Public Health ◽  
Anthelmintic Activity ◽  
Parasitic Infections ◽  
Intestinal Helminths ◽  
Preliminary Results ◽  
Preliminary Study ◽  
Thiosemicarbazide Derivatives ◽  
Anthelmintic Drugs

Parasitic infections caused by different species of intestinal helminths still poses a threat to public health. There is a need to search for new, effective anthelmintic drugs. A series of novel thiosemicarbazides were synthesized and evaluated for their in vitro anthelmintic activity. The preliminary results showed that the most of synthesized compounds were very active. 4-Phenyl-1-[(1-methyl-4-nitroimidazol-2-yl)carbonyl]thiosemicarbazide and 4-(3-chlorophenyl)-1-[(1-methyl-4-nitroimidazol-2-yl)carbonyl]thiosemicarbazide showed a 100% mortality of nematodes and a high anthelmintic activity in both tested concentrations.

Stochastic sensitivity of a bistable energy model for visual perception

2016 ◽  
Vol 91 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Alexander N. Pisarchik ◽  
Irina Bashkirtseva ◽  
Lev Ryashko
Keyword(s):  
Visual Perception ◽  
Energy Model ◽  
Stochastic Sensitivity

scholarly journals Benchmarking Reference Desk Service in Academic Health Science Libraries: A Preliminary Survey

2001 ◽  
Vol 62 (4) ◽  
pp. 348-353 ◽  
Author(s):  
Kathryn Robbins ◽  
Kathleen Daniels
Keyword(s):  
Service Quality ◽  
Health Science ◽  
Preliminary Survey ◽  
Quality Service ◽  
Academic Health ◽  
Preliminary Results ◽  
Standard Questionnaire ◽  
Preliminary Study

This preliminary study was designed to benchmark patron perceptions of reference desk services at academic health science libraries, using a standard questionnaire. Patron responses were compared to determine the library that provided the highest-quality service overall and along five service dimensions. All libraries were rated very favorably by those surveyed, but none rated significantly higher than the others except in facility appearance. Because the study revealed no other service quality differences, the results could not be used to improve services at any single library. However, the preliminary results could be useful in planning future benchmarking strategies.

The Preliminary Study on Visual Perception Ability of Preschoolers by MVPT-3

2015 ◽  
Vol 23 (2) ◽  
pp. 107-116
Author(s):  
Jung, Hye-Rim ◽  
◽  
Kang, Gun-Hee ◽  
Kim, Jo-Eun ◽  
Shin, Su-Ji ◽  
...  
Keyword(s):  
Visual Perception ◽  
Preliminary Study

scholarly journals Cognitive load in intralingual and interlingual respeaking – a preliminary study

2016 ◽  
Vol 52 (2) ◽  
Author(s):  
Agnieszka Szarkowska ◽  
Krzysztof Krejtz ◽  
Łukasz Dutka ◽  
Olga Pilipczuk
Keyword(s):  
Cognitive Load ◽  
Mental Effort ◽  
Self Report ◽  
Preliminary Results ◽  
Two Measures ◽  
Preliminary Study ◽  
Over Time

AbstractIn this paper we present preliminary results of the study on the cognitive load in intralingual and interlingual respeaking. We tested 57 subjects from three groups: interpreters, translators and controls while respeaking 5-minute videos in two language combinations: Polish to Polish (intralingual) and English to Polish (interlingual). Using two measures of cognitive load: self-report and EEG (Emotiv), we found that in most cases cognitive load was higher in interlingual respeaking. Self-reported mental effort that the participants had to expend to complete the respeaking tasks was lower in the group of interpreters, suggesting some parallels between interpreting and respeaking competences. EEG measures showed significant differences between respeaking tasks and experimental groups in cognitive load over time.

Influence of severe vibrations on the visual perception of video sequences

2000 ◽  
Author(s):  
Adrian Stern ◽  
E. Fisher ◽  
Stanley R. Rotman ◽  
Norman S. Kopeika
Keyword(s):  
Visual Perception ◽  
Video Sequences
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