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Special Graduate Schools
Graduate School of Information and Communication Technology
Department of Information and Communication
3. Theses(Master)
점진적 해상도 기법을이용한 정지영상 압축 방법
- Author(s)
- 김정율
- Department
- 정보통신전문대학원 정보통신공학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2009-02
- Language
- kor
- Abstract
- 본 논문은 점진적인 해상도 기법을 이용하여 휴대 단말기에 적합한 정지영상 압축 알고리즘을 제안한다. 본 방법은 빠른 복원속도를 위하여 매우 단순한 예측방법을 사용하는데, 기존의 압축 방법에 비해 우수한 압축성능을 가진다. 본 방법은 무손실 압축의 경우 JPEG-LS방법에 비해 압축성능과 복원시간이 향상된다. 또한 예측영상과 원본영상의 차이 값에 변환(Transform) / 양자화(Quantization) / 엔트로피코딩(Entropy coding)을하는손실압축기법을적용함으로써고화질영상에서 JPEG정지영상에비해동일한비트레이트(BitsRate)에서더높은PSNR(Peak Signal Noise Ratio)값을 얻을 수있다.
- Alternative Abstract
- In this paper, the new image compression method using progressive resolution scheme for mobile device is introduced. The new method has better compression performance yet uses simpler prediction algorithm compare to previous methods. For lossless compression, he result shows improved compression performance compared with JPEG-LS image compression. For lossy compression, transformation, quantization and entropy coding applied. Higher PSNR is produced for high quality image compare to JPEG with same bitsrate.
- Fulltext
- Appears in Collections:
- Special Graduate Schools > Graduate School of Information and Communication Technology > Department of Information and Communication > 3. Theses(Master)
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