axis of projection

The transform from angle motion to two-dimensional ( 2D) space motion of small target was made with the technique of complex multi-axis and space projection.

通过多轴复合技术以及空间投影技术，实现了角运动向小目标二维空间运动的转换；

For recognition, the front or trailing edge of projection of binary image on horizontal axis basically shows linear shape, so least square theory is applied in tilt correction.

识别过程中，数码管二值化后的图像在水平轴上的投影，其上升沿或下降沿基本呈现直线的形状，尝试把最小二乘法应用于倾斜校正。

The widths and height of the projection, and the distances from the axis of the projection to posterior superior iliac spine and posterior inferior iliac spine were measured bilaterally.

分别测量两侧投影的宽度、高度、投影纵轴到髂后上棘、髂后下棘的距离。