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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：信息与通信工程学院
学科：信号与信息处理. 通信与信息系统
办公地点：大连理工大学创新园大厦A526室
联系方式：0411-84706005-3526
电子邮箱：zhechen@dlut.edu.cn
An Improved Floating-to-Fixed-Point Conversion Scheme for DCT Quantization Algorithm
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论文类型：期刊论文
发表时间：2012-02-01
发表刊物：JOURNAL OF SIGNAL PROCESSING SYSTEMS FOR SIGNAL IMAGE AND VIDEO TECHNOLOGY
收录刊物：SCIE、EI
卷号：66
期号：2
页面范围：135-139
ISSN号：1939-8018
关键字：Floating-to-fixed-point conversion; Discrete cosine transform; Quantization; Video compression
摘要：Conventional fixed-point implementation of the DCT coefficients quantization algorithm in video compression may result in deteriorated image quality. The paper investigates this problem and proposes an improved floating-to-fixed-point conversion scheme. With a proper scaling factor and a new-established look-up table, the proposed fixed-point scheme can obtain bit-wise consistence to the floating-point realization. Experimental results verify the validity of the proposed method.