TITLE:
Multiple Targets Recognition for Highly-Compressed Color Images in a Joint Transform Correlator
AUTHORS:
Abdallah K. Cherri, Alshahd S. Nazar
KEYWORDS:
Image Compression, JPEG Image Format, Multiple Targets Detection, Fringe-Adjusted Joint Transform Correlation, Random-Phase Mask
JOURNAL NAME:
Optics and Photonics Journal,
Vol.12 No.5,
May
26,
2022
ABSTRACT: In this paper, we are proposing a compression-based multiple color target detection for practical near real-time optical pattern recognition applications. By reducing the size of the color images to its utmost compression, the speed and the storage of the system are greatly increased. We have used the powerful Fringe-adjusted joint transform correlation technique to successfully detect compression-based multiple targets in colored images. The colored image is decomposed into three fundamental color components images (Red, Green, Blue) and they are separately processed by three-channel correlators. The outputs of the three channels are then combined into a single correlation output. To eliminate the false alarms and zero-order terms due to multiple desired and undesired targets in a scene, we have used the reference shifted phase-encoded and the reference phase-encoded techniques. The performance of the proposed compression-based technique is assessed through many computer simulation tests for images polluted by strong additive Gaussian and Salt & Pepper noises as well as reference occluded images. The robustness of the scheme is demonstrated for severely compressed images (up to 94% ratio), strong noise densities (up to 0.5), and large reference occlusion images (up to 75%).