Mr. Wei Pien Lee Profile

Wei Pien Lee

at Philips Electronics Nederland BV

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Proceedings Article | 14 March 2005 Paper

Video frame rate conversion for mobile devices

Wei Pien Lee, Harm Belt, Erik van der Tol

Proceedings Volume 5684, (2005) https://doi.org/10.1117/12.588726

KEYWORDS: Video, Motion estimation, Mobile devices, Image segmentation, Televisions, Image storage, 3D displays, LCDs, Digital filtering, Video processing

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These years the growing demand for innovative mobile devices has been a major driving force behind mobile multi-media applications. Essential for further growth is a wide range of multi-media content available through the networks either sent by mobile devices or network servers. Limitations on network bandwidth and storage capacity have a large impact on the quality of video. One important quality issue concerns the low video frame rate, typically between 5 and 15 frames per second. Such low frame rates lead to undesired artefacts like motion judder or blur. A typical refresh rate of a mobile display is 60Hz. Currently a frame memory is used as a buffer between the software application and the display to deal with the frequency mismatch, which can be considered as frame repetition. In this paper, frame rate conversion is considered to improve motion portrayal on mobile devices. Two motion estimators are discussed along with simplifications to comply with limited platform resources, and with refinements for acceptable quality. Two frame interpolators and their relationships with the motion estimators are treated. The proposed frame rate converter enhances the quality of portrayed motion significantly, while required platform resources are kept minimal by exploiting typical properties of mobile displays.

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