Dr. Kanik Palodhi Profile

Dr. Kanik Palodhi

at Univ of Calcutta

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 21 August 2020 Presentation + Paper

Characterization of biomedical images using Walsh filters followed by convolution

Joydeep Chatterjee, Semanti Chakraborty, Kanik Palodhi

Proceedings Volume 11509, 1150908 (2020) https://doi.org/10.1117/12.2570952

KEYWORDS: Convolution, Image filtering, Biomedical optics, Spatial light modulators, Optical filters, Image processing, Image enhancement, Shape analysis, Sensors

Read Abstract +

In edge enhancement, edges in all directions are usually evenly highlighted in image to demarcate the shape of biological cells apart from other applications. Many diseased cells and parasites deviate from the regularity of a normal cell in terms of shape with deformity increasing with stages of the disease. In this proceeding, a directional / selective edge highlighting using Walsh filters has been proposed. A differentiation between a normal cell and a diseased cell using this selective edge enhancement followed by arc convolutions has been demonstrated. Here, the sample image in spectral domain is multiplied with the Walsh filter before inverse Fourier transform is taken to obtain selectively highlighted edges. Subsequently, arcs of different orientations are convolved with the edge enhanced image. Resulting convolution peaks are isolated from the background by proper thresholding and counted using morphological techniques. For a symmetric cell, convolution with arcs at different orientations gives same number of peaks whereas for asymmetric cells different number of peaks will be obtained. Here, proper thresholding to eliminate lower peaks and selective edge enhancement to highlight or suppress (for example suppressing diameter in semi-circle) certain edges is very important. Also, the positions of the convolution peaks depending upon the arc orientation give edge direction. Spatial Light Modulator (SLM) is usable for the edge enhanced image generation. Additionally, Hilbert transform for edge enhancement has also been used.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years