No abstract

The main disadvantage of traditional global thresholding techniques is that they do not have an ability to exploit information of the characteristics of target images that they threshold. In this paper, we propose a new approach based on combination of modified p-tile and edge detection algorithms to have more accurate object segmentation. Using our proposed method, it is shown that almost all of our experiments resulted to better object segmentation than using traditional methods.

No abstract

In this paper beam propagation analysis of a multi-beam multi-collimator optical communication system through free space is studied. For this purpose, the propagation properties of Gaussian multi-beams through a multi-optical path including collimators in transmitters are studied and an analytical formula for intensity distribution is derived. The effects of beam divergence and beam separation distances on the propagation properties of Gaussian multi-beams are studied in detail by calculating the beam width and power in bucket (PIB). The analyses are illustrated by numerical examples.

No abstract