基于JPEG2000一种上下文生成的改进方法 |
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作者姓名: | 田冬庚 赵亦工 孙文方 |
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作者单位: | 西安电子科技大学模式识别与智能控制研究所 西安710071 |
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摘 要: | 提出一个在JPEG2000标准的基础上改进的上下文生成方案,它基于当前位平面一个系数产生的重要信息对当前位平面其它系数的上下文不产生影响的原则。这个方法在基本不降低压缩质量的前提下,提高了编解码的执行速度,降低了操作复杂度。实验表明该改进算法将对提高硬件系统性能有很好帮助。
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关 键 词: | JPEG2000 上下文 率失真优化 图像编码 图像处理 |
An Improved Scheme of Forming Context Based on JPEG2000 |
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Authors: | Tian Donggeng Zhao Yigong Sun Wenfang |
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Abstract: | An improved scheme of forming context based on JPEG2000 is proposed.This scheme is based on the principle that the significant information of a coefficient in the present bit-plane doesn't affect the context of the other coefficients in that bit-plane.This scheme speeds up the execution of coding and decoding,lowers the operating complexity.Experiments results indicate that it can promote the performance of hard ware-system. |
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Keywords: | JPEG2000 Context Rate-distortion optimization Image coding Image processing |
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