系统使用CCD获取原始数字图像数据，采用快速算法实现了核心的二维DCT变换，经过编码后，在一个16位定点DSP上实现了快速图像压缩。

The system uses CCD for getting digital image, uses a 16 bit fix-point DSP to perform fast discret cosine transform(DCT) arithmetic and image encoding and realizes a fast image compression in end.

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文中给出了用于MPEG_4的各种短长度（< 8）一维DCT快速算法。 该算法不仅具有高的计算效率，而且都具有规则的实现结构。

This paper develops all short_length (<8) one_dimensional DCT algorithms for MPEG_4 applications, which have not only high computation efficiency but also regular implementation structure.

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通过约束传播分析，为几何约束求解引擎的实现提供了理论依据和快速算法。

All these measure along with propagation analysis of constraints established the theory and quick solution of geometric constraint engine.

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