Rotation Invariant Parallel Signal Processing Using a Diffractive Phase Element for Image Compression

Applied Sciences

Habib Hamam¹ 

[1] Faculty of Engineering, Uni de Moncton, Moncton, NB E1A3E9, Canada;

关键词: rotation invariance;    parallel information processing;   

DOI  :  10.3390/app12010439

来源: DOAJ

【 摘 要 】

We propose a new rotation invariant correlator using dimensionality reduction. A diffractive phase element is used to focus image data into a line which serves as input for a conventional correlator. The diffractive element sums information over each radius of the scene image and projects the result onto one point of a line located at a certain distance behind the image. The method is flexible, to a large extent, and might include parallel pattern recognition and classification as well as further geometrical invariance. Although the new technique is inspired from circular harmonic decomposition, it does not suffer from energy loss. A theoretical analysis, as well as examples, are given.

【 授权许可】

Unknown