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This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. -This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compar

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用VB编写DirectX7.0游戏 　　DirectX7.0终于出现了，同前面DirectX6相同，版本7也带了一个庞大（129M）的SDK开发库，同DirectX6 SDK库相比，DirectX7的SDK库提供了以下新的功能： 　　＊ 对于Visual Basic的支持。用户可以使用类库在Visual Basic环境下开发基于DirectX的程序。 　　＊ 提供更多DirectX3D立即模式（Immediate Mode）下的API函数，以支持DirectX7中新的3D特效，包括立体环境映射、顶点混合等。 　　＊ DirectMusic支持DownLoadable Sound Level 2标准。 　　＊ DirectInput支持8按键的游戏杆设备，同时支持Microsoft的力反馈摇杆。SDK库提供了读取力反馈效果文件的方法。同时提供了Force Editor程序来建立效果。 　　对于VB爱好者来说，新的SDK库终于提供了完整的对VB的支持，现在终于可以使用Visual Basic来编写DirectX的程序了。 -err

软件简介：收录了数部精典童话,如安徒生童话全集,格林童话全集,一千零一夜,伊索寓言,王尔德童话,成语小故事,哈利波特四部童话巨集等,并集成了数十首儿童歌曲,让孩子们在童话中畅游吧!-software description : a collection of a few classical fairy tales, such as Hans Christian Andersen"s The Complete Works, Green Fairy Tales Collected Works, 1,001 nights Aesop"s Fables, Oscar Wilde fairy tale, a small story saying that Harry Potter 4 fairy macros. and the integration of dozens of children songs, and let the kids in China to visit the fairy!

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