Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2003.07e
- /
- Pages.1803-1806
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- 2003
H/W Implementation of JPEG compatible fragile watermarking algorithm
JPEG 호환 프래절 워터마킹 알고리즘의 하드웨어 구현
Abstract
This paper presents a H/W module that executes a fragile watermarking algorithm. The module inputs sequentially quantized DCT values, encodes watermark and then outputs watermarked DCT coefficients. A fragile and invisible watermarking algorithm is adopted, modified and enhanced here to reduce H/W size and image degradation. The module can be directly inserted between DCT quantizer and VLC encoder in wide spread JPEG/MPEG encoder. The module is expected to be used for real-time authentication purpose in DVR(Digital Video Recorder) or digital cameras.
Keywords