Image processing on encoded video sequences
| Autor: | Farshid Arman, Ming-Yee Chiu, Arding Hsu |
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| Rok vydání: | 1994 |
| Předmět: |
Video post-processing
Computer Networks and Communications Computer science Video capture business.industry ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Image processing Data_CODINGANDINFORMATIONTHEORY Video processing Hardware and Architecture Video tracking Media Technology Video denoising Computer vision Video browsing Artificial intelligence Multiview Video Coding business Software Information Systems |
| Zdroj: | Multimedia Systems. 1:211-219 |
| ISSN: | 1432-1882 0942-4962 |
| Popis: | This paper presents a novel approach to processing encoded video sequences prior to complete decoding. Scene changes are easily detected using DCT coefficients in JPEG and MPEG encoded video sequences. In addition, by analyzing the DCT coefficients, regions of interest may be isolated prior to decompression, increasing the efficiency of any subsequent image processing steps, such as edge detection. The results are currently used in a video browser and are part of an ongoing research project in creating large video databases. The procedure is detailed with several examples presented and studied in depth. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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