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Efficient Intramode SKIP Detection Algorithm for H.264/AVC Video Encoder
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- Authors
- Byung Gyu Kim, Jong Ho Kim
- Issue Date
- 2006-09
- Citation
- Optical Engineering, v.45, no.9, pp.1-5
- ISSN
- 0091-3286
- Publisher
- SPIE
- Language
- English
- Type
- Journal Article
- Abstract
- A fast intramode SKIP detection algorithm based on the rate-distortion (RD) cost for an interframe (P slices) is proposed for H.264/AVC video encoding. There are three types of intrapredictions according to profiles. These are 16 × 16 and 4 × 4 intrapredictions for luminance and an 8 × 8 intraprediction for chroma. For the high profile, an 8 × 8 intraprediction is added for luminance. The 4 × 4 prediction mode has nine prediction directions with four directions for 16 × 16 and 8 × 8 luma, and 8 × 8 chrominance. In addition to the intermode search procedure, an intramode search causes a significant increase in the complexity and computational load for an interframe. To reduce the computational load of the intramode search at the interframe, the rate-distortion (RD) costs of the neighborhood macroblocks (MBs) for the current MB are used, and we propose an adaptive thresholding scheme for the intraSKIP extraction. © 2006 Society of Photo-Optical Instrumentation Engineers.
- KSP Keywords
- Detection algorithm, H.264/AVC video, Optical instrumentation, Prediction mode, Rate-distortion (RD) cost, adaptive thresholding, computational load, video encoder, video encoding