A New Approach for Real Time Motion Estimation Using Robust Statistics and MPEG Domain Applied to Mosaic Images Construction.

Barceló, Lluis; Felip, R.L.; Binefa, Xavier

doi:10.1109/icme.2005.1521444

Cited by 4 publications

(2 citation statements)

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“…Accordingly, parameter can be selected adaptively by monitoring the change of values in vector and triggering pixel-based GME when a large change is detected. These results also indicate that sprite generation based only on MVs, such as [4]- [6], would face significant penalty in accuracy in sequences containing abrupt camera motion.…”

Section: Resultsmentioning

confidence: 80%

“…On the other hand, compressed-domain algorithms for sprite construction are able to significantly reduce computational complexity by utilizing information from the encoded video bitstream [4]- [6]. Typically, in this case, GM between each pair of frames would be estimated using encoded motion information, and the warping parameters between each frame and the sprite's coordinate system would be computed by concatenating current frame's GM parameters with previous frame's warping parameters.…”

Section: Introductionmentioning

confidence: 99%

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Still visualization of object motion in compressed video

Khatoonabadi

Bajić

2013

2013 IEEE International Conference on Multimedia and Expo Workshops (ICMEW)

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Visualizing motion of objects in a scene is important in video analytics, summarization, sports, entertainment, and security. In this paper, we propose an efficient framework for constructing a sprite-based visualization of the object's trajectory from compressed video. A background sprite is generated by using a limited amount of information from a compressed video stream -motion vectors from each frame, and pixel values from a select subset of frames. Global motion parameters are estimated using a combined motion vector-based and pixel-based approach, and then used to map decoded pixel values to the sprite. Meanwhile, the trajectory of a moving object is estimated using an efficient method based solely on decoded motion vectors and coding modes, and overlaid onto the sprite to indicate the path traversed by the object. Experimental results demonstrate both efficiency and effectiveness of the proposed method.

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Section: Resultsmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%