Three-dimensional Object Recognition With Microlens Array

Because of non-contact, speed, parallel processing and shift invariant, two-dimensional(2-D) object recognition by use of optical system is be used abroad. But optical system only can be used for processing of 2-D information, not be used for 3-D object recognition, so 3-D object information must be transformed for 2-D information firstly.A novel method for three-dimensional(3-D) object recognition by use of microlens array is proposed. The conversion of depth information of 3-D objects to 2-D elemental images by use of the characteristic of microlens array makes it is possible to recognition by optical processing. Correlative analysis and calculations has been done for the process of recognition, and real-time recognition of dice ,a 3-D object ,has been accomplished by use of the method of match filtering. The result showed that the proposed method performed better, and it can be used for recognition of slightly rotated and slightly shifted object flexibly.3-D object micro-angle rotation invariant recognition is discussed continually, The experiment result of 3-D object real-time recognition showed that the proposed method performed better, and then, A novel method for 3-D object rotation invariant recognition by use of synthetic discriminant function(SDF) is received. The computer simulate experiment for rotation invariant recognition for dice, a 3-D object has been accomplished.