For better efficiency and separability, the binary image is then transformed to a new space by eigenspace and canonical space transformation, and recognition is done in canonical space.

• 此方法可以减少照明对前景人物抽取的影响。为达到较精准与可分别度，二值化影像经由特徵空间及标准空间转换，投影至标准空间。最后人类动作的识别在标准空间中完成。