A Temporal Redundancy Removal Method for Video Sequences using Feature Information

2013 ◽  
Author(s):  
Jae-Hyun Jun ◽  
◽  
Min-Jun Kim ◽  
Yong-Suk Jan ◽  
Cheol-Woong Ahn ◽  
...  
Keyword(s):  
Video Sequences ◽  
Removal Method ◽  
Redundancy Removal ◽  
Feature Information ◽  
Temporal Redundancy

Facial Expression and Gesture Analysis for Emotionally-Rich Man-Machine Interaction

2011 ◽  
pp. 175-200 ◽  
Author(s):  
Kostas Karpouzis ◽  
Amaryllis Raouzaiou ◽  
Athanasios Drosopoulos ◽  
Spiros Ioannou ◽  
Themis Balomenos ◽  
...  
Keyword(s):  
Facial Expressions ◽  
Emotional State ◽  
Holistic Approach ◽  
Video Sequences ◽  
Emotional States ◽  
Modeling And Analysis ◽  
Gesture Analysis ◽  
Feature Information ◽  
Emotion Modeling ◽  
Machine Interaction

This chapter presents a holistic approach to emotion modeling and analysis and their applications in Man-Machine Interaction applications. Beginning from a symbolic representation of human emotions found in this context, based on their expression via facial expressions and hand gestures, we show that it is possible to transform quantitative feature information from video sequences to an estimation of a user’s emotional state. While these features can be used for simple representation purposes, in our approach they are utilized to provide feedback on the users’ emotional state, hoping to provide next-generation interfaces that are able to recognize the emotional states of their users.

Facial Expression and Gesture Analysis for Emotionally-Rich Man-Machine Interaction

2011 ◽  
pp. 2212-2232
Author(s):  
Kostas Karpouzis ◽  
Amaryllis Raouzaiou ◽  
Athanasios Drosopoulos ◽  
Spiros Ioannou ◽  
Themis Balomenos ◽  
...  
Keyword(s):  
Facial Expressions ◽  
Emotional State ◽  
Holistic Approach ◽  
Video Sequences ◽  
Emotional States ◽  
Modeling And Analysis ◽  
Gesture Analysis ◽  
Feature Information ◽  
Emotion Modeling ◽  
Machine Interaction

This chapter presents a holistic approach to emotion modeling and analysis and their applications in Man-Machine Interaction applications. Beginning from a symbolic representation of human emotions found in this context, based on their expression via facial expressions and hand gestures, we show that it is possible to transform quantitative feature information from video sequences to an estimation of a user’s emotional state. While these features can be used for simple representation purposes, in our approach they are utilized to provide feedback on the users’ emotional state, hoping to provide next-generation interfaces that are able to recognize the emotional states of their users.

Objective Measurement of Perceived QoS for Homogeneous MPEG-4 Video Content

2011 ◽  
pp. 770-777 ◽  
Author(s):  
Harilaos Koumaras ◽  
Drakoulis Martakos ◽  
Anastasios Kourtis
Keyword(s):  
User Satisfaction ◽  
Strong Influence ◽  
Video Quality ◽  
Video Sequences ◽  
Fourth Generation ◽  
Image Artifacts ◽  
Quality Degradation ◽  
Digital Encoding ◽  
Temporal Redundancy ◽  
Perceived Qos

Multimedia applications over 3G and 4G (third and fourth generation) networks will be based on digital encoding techniques (e.g., MPEG-4) that achieve high compression ratios by exploiting the spatial and temporal redundancy in video sequences. However, digital encoding causes image artifacts, which result in perceived-quality degradation. Due to the fact that the parameters with strong influence on the video quality are normally those set at the encoder (most importantly, the bit rate and resolution), the issue of user satisfaction in correlation with the encoding parameters has been raised (MPEG Test, 1999).

scholarly journals Block Based Motion Estimation Algorithms: Analysis

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Motion Estimation ◽  
Video Coding ◽  
Video Processing ◽  
Search Algorithm ◽  
Video Sequences ◽  
Estimation Process ◽  
Estimation Algorithms ◽  
Block Based ◽  
Temporal Redundancy ◽  
Full Search

several video coding standards and techniques have been introduced for multimedia applications, particularly h.26x series for video processing. These standards employ motion estimation process in order to reduce the amount of data that is required to store or transmit the video. Motion estimation process is an inextricable part of the video coding as it removes the temporal redundancy between successive frames of video sequences. This paper is about these motion estimation algorithms, their search procedures, complexity, advantages, and limitations. A survey of motion estimation algorithms including full search algorithm, many fast search and fast full search block based algorithms has been presented. An evaluation of up to date motion estimation algorithms, based on a number of empirical results on several test video sequences, is presented as well.

Detecting “DeepFakes” in H.264 Video Data Using Compression Ghost Artifacts

2020 ◽  
Vol 2020 (4) ◽  
pp. 116-1-116-7
Author(s):  
Raphael Antonius Frick ◽  
Sascha Zmudzinski ◽  
Martin Steinebach
Keyword(s):  
Image Forensics ◽  
Video Data ◽  
Experimental Results ◽  
Video Sequences ◽  
The Internet ◽  
Video Content ◽  
High Quality ◽  
The Public

In recent years, the number of forged videos circulating on the Internet has immensely increased. Software and services to create such forgeries have become more and more accessible to the public. In this regard, the risk of malicious use of forged videos has risen. This work proposes an approach based on the Ghost effect knwon from image forensics for detecting forgeries in videos that can replace faces in video sequences or change the mimic of a face. The experimental results show that the proposed approach is able to identify forgery in high-quality encoded video content.

Analyse des interactions didactiques lors de l’enseignement du football à l’école Tunisienne

2013 ◽  
Vol 22 (5-6) ◽  
pp. 387-404
Author(s):  
Guerchi Maher ◽  
Makram Zghibi
Keyword(s):  
Physical Education ◽  
Qualitative Methodology ◽  
Video Sequences ◽  
Physical Education Teacher ◽  
Education Teacher ◽  
Social Facts ◽  
Close Observation ◽  
The Impact

Abstract Our research focuses on describing what is really happening when a teacher wants to transmit to pupils - girls and boys - knowledge socially marked as masculine. To describe the processes involved in effective didactic interactions between a teacher a pupil and knowledge, we opted for qualitative methodology, consisting on a close observation of the didactic interactions of a teacher with his pupils (girls and boys). Analysis of the interviews focused especially on the nature of knowledge actually transmitted for girls and boys. The studied video sequences permitted to study the didactic interactions more precisely as are actually happening on the pitch. Both tools allowed us to identify the educational intentions of teachers (specialist or not); women or men in the teaching of football. The results show that teachers’ conceptions influence implicitly or explicitly the modalities of their interventions and the nature of football knowledge transmitted to pupils. This makes us think that the impact of social facts (backgrounds) on Tunisian teachers is great. This phenomenon may lock the physical education teacher in some representations modeling masculine and feminine stereotypes and affect his didactic and teaching contribution. Therefore, the teacher must be aware of the impact of the connotation that may have certain “masculine” practices on his interventions and consequently over the pupils learning (either boys or girls).

Hydrological data and site feature information for a forest clearcutting and residual biomass removal study at the Marcell Experimental Forest

2020 ◽  
Author(s):  
Colin P. R. McCarter ◽  
Stephen D. Sebestyen ◽  
Susan L. Eggert ◽  
Kristine M. Haynes ◽  
Randall K. Kolka ◽  
...  
Keyword(s):  
Hydrological Data ◽  
Residual Biomass ◽  
Biomass Removal ◽  
Feature Information
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