Edge enhancement in digital holo-microscopy

Sanjukta Sarkar; K. Bhattacharya

doi:10.1117/12.2181861

15 June 2015 Edge enhancement in digital holo-microscopy

Sanjukta Sarkar, K. Bhattacharya

Proceedings Volume 9654, International Conference on Optics and Photonics 2015; 96540S (2015) https://doi.org/10.1117/12.2181861
Event: International Conference on Optics and Photonics 2015, 2015, Kolkata, India

Abstract

A simple edge enhancement technique in the digital holo-microscopy is presented here. In Digital Holo-microscopy (DHM) the intensity distribution of the CCD is produced by the interference of a plane reference wave and that scattered by the object. The reconstruction is accomplished by multiplication of the digitally stored hologram with a digital model of the reference wave and subsequent numerical determination of the diffracted field of the object in a defined image plane. Hence, a focused and a defocused version of the object may be reconstructed from only one recorded hologram by varying the reconstruction distance during numerical reconstruction. The edge enhancement of the object is possible by simply subtracting this numerically reconstructed defocused real image from the focused real image. It is interesting to note that using this technique edge enhancement technique is possible for amplitude and phase objects. The simulation and experimental results presented validate our theoretical expectations.

Citation Download Citation

Sanjukta Sarkar and K. Bhattacharya "Edge enhancement in digital holo-microscopy", Proc. SPIE 9654, International Conference on Optics and Photonics 2015, 96540S (15 June 2015); https://doi.org/10.1117/12.2181861

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available