Moment Invariants for Pattern Recognition Under Translation, Rotation, and Changes of Size and Brightness
Qiong Zhan, Takumi Minemoto · Journal of Modern Optics · 1993
The use of moment invariants in the frequency plane is proposed for pattern recognition. Moment invariants are theoretically derived in the case of translation, rotation, and changes of size and brightness. The usefulness of the moment invariants is shown by numerical experiments using Chinese characters and model car images with grey-level intensities.