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This paper considers tracking of objects for video-based intrusion detection systems. Current tracking algorithms can be used for surveillance, but in that use-case, these algorithms execute with too high latency and are not suitable for real-time applications. In this paper, we propose novel techniques for tracking algorithms based on tracklets in order to improve the execution time by limiting the...
In this paper, we discuss the design and real-time implementation of a novel wavelet coefficient encoder for Scalable Video Coding (SVC) in a surveillance environment. The novel wavelet coefficient encoder, called Two-Stage SPECK (TSSP), is designed for efficient hardware/software implementations on parallel architectures. As the encoder needs to be integrated into an embedded system, we will elaborate...
This paper considers the problem of tracking a variable number of objects through a surveillance site monitored by multiple cameras with slightly overlapping field-of-views. To this end, we propose to cluster tracklets generated by a commercially available single-camera video-analysis algorithm which is solely based on the position of objects. A first contribution of this paper is the proposal of...
The availability of inexpensive cameras enables alternative applications beyond personal video communication. For example, surveillance of rooms and home premises is such an alternative application, which can be extended with remote viewing on hand-held battery-powered consumer devices. Scalable wavelet image/video coding is attractive for this application since the video can be scaled easily to many...
In this paper, we address two problems found in embedded implementations of Scalable Video Codecs (SVCs): the temporal signal energy distribution and frame-to-frame quality fluctuations. The unequal energy distribution between the low- and high-pass band with integer-based wavelets leads to sub-optimal rate-distortion choices coupled with quantization-error accumulations. The second problem is the...
In this paper, we present a temporal candidate generation scheme that can be applied to motion estimators in Scalable Video Codecs (SVCs). For bidirectional motion estimation, usually a test is made for each block to determine which motion compensation direction is preferred: forward, bidirectional or backward. Instead of simply using the last computed motion vector field (backward or forward), giving...
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