NDLI: Finite state DCT with global bitmap image coding

Content Provider	IEEE Xplore Digital Library
Author	Yung-Gi Wu Shen-Chuan Tai
Copyright Year	1994
Description	Author affiliation: Inst. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan (Yung-Gi Wu; Shen-Chuan Tai)
Abstract	The ordinary DCT coding techniques always classify the image into 4 classes, then select suitable bitmaps for the 4 classes. This is not enough for complicated images. In order to encode the image in more detail, the authors classify the image into 16 classes. This classification can reduce the artifacts which are caused by the ordinary coding scheme. However, it will take a lot of time to generate the 16 bitmaps for the 16-class classification. Besides, it will take a very large overhead to transmit the 16 bitmaps. In order to solve the deficiency, the authors developed the concept of global bitmaps of 16 classes which can be used for all the images. As to the side information of the classification, the authors use the idea of the finite state machine to predict the current class from the previously classes. Thus, the overhead of the class will be reduced. The experimental results show that the performance of the coding system is very good and the prediction correct ratio can be over 70% in the Lena image.<>
Starting Page	193
Ending Page	196
File Size	346271
Page Count	4
File Format	PDF
ISBN	078031865X
DOI	10.1109/SIPNN.1994.344934
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-04-13
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Degradation Image coding Costs Bit rate Transform coding Karhunen-Loeve transforms Compaction Decorrelation Discrete cosine transforms Frequency domain analysis
Content Type	Text
Resource Type	Article

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