目前国内外的相关研究主要集中于对传统的二维地图和固定地图的研究，对三维虚拟地图和可旋转地图的研究还相对较少。
Current and relevant research focused mainly on the traditional two-dimensional maps and static map, and study to three-dimensional virtual map and rotated map relatively less.
三维几何特征能够提供比二维图像更加丰富的信息，其中部分标准化处理后的特征还具有平移、旋转和缩放不变性。
The 3d geometric features can provide more information for recognition than 2d images and some measured features is invariant of transformation, rotation and scale.
GICR码是复数旋转码从二维空间到三维空间的推广。
The codes are the extension of complex rotary codes from 2 dimensional space to 3 dimensional space.
应用推荐