Recent Advances in Optical Image Processing
Résumé
Optical processing of images has received much attention recently. Experimental breakthroughs have been achieved mainly by studying correlation applications for identification and tracking, two-dimensional and three-dimensional holography, compression and encryption of images, etc. While images are originally optical, numerical processing is often realized to fully exploit their information content. Within this context, our aim is to review the recent progress made in the field of optical processing of information. We consider techniques allowing us to increase image quality to render them more useful for correlation and reconstruction applications. The chapter is divided in two parts. In the first part, techniques for increasing image quality are described in detail. Interestingly, those dealing with color encoding are addressed. In addition, methods for denoising images are dealt with. The second part considers the polarization encoding methods. Throughout this review chapter, many examples illustrating the performances of these techniques are given. Future prospects for optimizing current techniques of optical processing of images are suggested.