发布求助
文献互助 智能选刊 最新文献

Proceedings of the International Conference on Signal Processing and Multimedia Applications最新文献

筛选
英文 中文
Improved inter mode decision for H.264/AVC using weighted prediction 利用加权预测改进H.264/AVC模式间决策
Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003517300730078
Amrita Ganguly, A. Mahanta
{"title":"Improved inter mode decision for H.264/AVC using weighted prediction","authors":"Amrita Ganguly, A. Mahanta","doi":"10.5220/0003517300730078","DOIUrl":"https://doi.org/10.5220/0003517300730078","url":null,"abstract":"H.264/AVC video coding standard outperforms former standards in terms of coding efficiency but at the expense of higher computation complexity. Of all the encoding elements in H.264, inter prediction is computationally most intensive and thus adds to the computational burden for the encoder. In this paper, we propose a fast inter prediction algorithm for JVT video coding standard H.264/ AVC. Prior to performing the motion estimation for inter prediction, characteristics like stationarity and homogeneity of each macroblock is determined. The macroblocks correlation with neighboring macroblocks in respect of predicted motion vectors and encoding modes are studied. Weights are assigned for these parameters and the final mode is selected based upon these weights. The average video encoding time reduction in the proposed method is 70% compared to the JVT benchmark JM12.4 while maintaining similar PSNR and bit rate. Experimental results for various test sequences at different resolutions are presented to show the effectiveness of the proposed method.","PeriodicalId":103791,"journal":{"name":"Proceedings of the International Conference on Signal Processing and Multimedia Applications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133525313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Senses — What u see? Vision screening system dedicated for iOS based devices development and screening results 感官——你看到了什么?视觉筛选系统专用于基于iOS的设备开发和筛选结果
Proceedings of the International Conference on Signal Processing and Multimedia Applications Pub Date : 2011-07-18 DOI: 10.5220/0003513901730180
Robert Kosikowski, Lukasz Kosikowski, Piotr Odya, A. Czyżewski
{"title":"Senses — What u see? Vision screening system dedicated for iOS based devices development and screening results","authors":"Robert Kosikowski, Lukasz Kosikowski, Piotr Odya, A. Czyżewski","doi":"10.5220/0003513901730180","DOIUrl":"https://doi.org/10.5220/0003513901730180","url":null,"abstract":"This paper describes a design and implementation of the vision screening system dedicated for iOS (iPhone/iPad/iPod Operating System) based devices. The aim of the system is to promote and popularize the vision tests, especially among children and youth. The examination consists of color vision and contrast differentiation tests. After the examination the system automatically evaluates users' answers and generates the results. Test data are anonymously sent to the server allowing for a detailed analysis. The paper contains analysis of the results on the population of about 3800 people. Presented data show that vision problems concern about half of users. The analysis was divided into two age groups (pre-school children and older) and two types of eye disorders - vision acuity and perceptions of colors including Dalton testing. Test for the first age group has been adapted to examine people with special educational needs.","PeriodicalId":103791,"journal":{"name":"Proceedings of the International Conference on Signal Processing and Multimedia Applications","volume":"24 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132398322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信