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Ontology is a hotspot of research in knowledge engineering. It is an effective means that building an ontology-based domain knowledge base to realize the sharing of domain knowledge. Manual building needs lots of repetitive work, which is inefficient and hard to migrate from one field to others. To solve the above problems, this paper presents an approach of domain ontology construction based on resource...
In this paper, we present a novel low complexity yet very efficient rate control algorithm for Scalable Video Coding (SVC) based on the ρ-domain model. Compared with the conventional ρ-domain model in determining quantization parameter, the proposed algorithm adopts a new linear model to obtain the quantization parameter at frame-level. This linear model is able to characterize the relationship between...
Robust transmission of compressed video bit-streams over heterogeneous packet loss network is one of the key challenges in the contemporary video communication system. Recent researches have focused on enhancing error resilience of bit-stream through the deployment of transcoder between wired and wireless networks. However, the conventional error resilient algorithms (e.g., Intra refresh) through...
We propose in this paper a novel error resilient transcoding scheme that can be placed at the boundary between wired and wireless networks via heterogeneous network links. This error resilient transcoder shall seamlessly complement the standard scalable video coding (SVC) bitstream to offer additional error resilient adaptation capability for receiving devices. The novel error resilient transcoding...
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