دورية أكاديمية
Distributed coding/decoding complexity in video sensor networks.
| العنوان: | Distributed coding/decoding complexity in video sensor networks. |
|---|---|
| المؤلفون: | Cordeiro PJ; Instituto Politécnico de Leiria/ESTG, Alto Vieiro, Leiria, Portugal. paulo.cordeiro@ipleiria.pt, Assunção P |
| المصدر: | Sensors (Basel, Switzerland) [Sensors (Basel)] 2012; Vol. 12 (3), pp. 2693-709. Date of Electronic Publication: 2012 Feb 29. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: MDPI Country of Publication: Switzerland NLM ID: 101204366 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1424-8220 (Electronic) Linking ISSN: 14248220 NLM ISO Abbreviation: Sensors (Basel) Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: Basel, Switzerland : MDPI, c2000- |
| مستخلص: | Video Sensor Networks (VSNs) are recent communication infrastructures used to capture and transmit dense visual information from an application context. In such large scale environments which include video coding, transmission and display/storage, there are several open problems to overcome in practical implementations. This paper addresses the most relevant challenges posed by VSNs, namely stringent bandwidth usage and processing time/power constraints. In particular, the paper proposes a novel VSN architecture where large sets of visual sensors with embedded processors are used for compression and transmission of coded streams to gateways, which in turn transrate the incoming streams and adapt them to the variable complexity requirements of both the sensor encoders and end-user decoder terminals. Such gateways provide real-time transcoding functionalities for bandwidth adaptation and coding/decoding complexity distribution by transferring the most complex video encoding/decoding tasks to the transcoding gateway at the expense of a limited increase in bit rate. Then, a method to reduce the decoding complexity, suitable for system-on-chip implementation, is proposed to operate at the transcoding gateway whenever decoders with constrained resources are targeted. The results show that the proposed method achieves good performance and its inclusion into the VSN infrastructure provides an additional level of complexity control functionality. |
| References: | IEEE Trans Image Process. 2007 Oct;16(10):2436-48. (PMID: 17926927) Sensors (Basel). 2008 Aug 04;8(8):4529-4559. (PMID: 27873772) Sensors (Basel). 2008 Dec 08;8(12):7982-7995. (PMID: 27873971) |
| فهرسة مساهمة: | Keywords: complexity control; real-time transcoding; video sensors |
| تواريخ الأحداث: | Date Created: 20120628 Date Completed: 20121030 Latest Revision: 20211021 |
| رمز التحديث: | 20231215 |
| مُعرف محوري في PubMed: | PMC3376628 |
| DOI: | 10.3390/s120302693 |
| PMID: | 22736972 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1424-8220 |
|---|---|
| DOI: | 10.3390/s120302693 |