本文基于三维离散余弦变换（3D-DCT）技术和扩频通信技术提出三维体数据鲁棒水印嵌入算法。
This paper proposes a robust watermarking algorithm for volume data based on three-dimension discrete cosine transform(3D-DCT) and spread-spectrum communication technique.
文章阐述了以小层精细标定、相干数据体、三维可视化等地震解释新技术为技术保证，地质、测井、地震综合解释为技术路线的构造研究方法及其应用。
A method for research of structure with a new seismic interpretation involving fine subzone calibration, coherent data volume and visualization as a technical guarantee and.
由于体绘制技术是将三维的离散数据直接转换为二维图像而不必生成中间几何图元，所以又称为直接体绘制。
Volume rendering is also known as direct volume rendering, for no intermediate geometry primitives are generated during its visualization process.
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