Unspecified Weixiang Ma Profile

Weixiang Ma

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 | 13 May 2024 Paper

Slice-based ray casting volume shadow of volumetric datasets

Dening Luo, Weixiang Ma, Dequan Guo

Proceedings Volume 13158, 1315803 (2024) https://doi.org/10.1117/12.3029429

KEYWORDS: Light sources and illumination, Shadows, Attenuation, Volume rendering, Light sources, Visualization, Matrices, Computed tomography, Light scattering, Image resolution

Read Abstract +

The realistic volume shadow of volumetric datasets can improve the perception of shape and depth, and further enhance the efficiency of detecting defects, anomalies, and other issues. In this paper, a novel and high-performance method called slice-based ray casting (SBRC) is proposed to implement the volume shadow of volumetric datasets. The first step of the SBRC method is to use the light source as the viewpoint to render the illumination information of each slice of the volumetric datasets, slice by slice, into the illumination attenuation buffer. The second step is to use the camera as the viewpoint, render volumetric datasets using ray casting, and calculate volume shadows using the illumination attenuation buffer. The experiments show that the method can obtain much better volume shadows and more scalable performance than other volume illumination methods. This is due to the illumination attenuation calculation slice by slice and the high-efficiency shadow calculation in ray casting. And, by using a genetic algorithm, we can optimize the shadow calculation parameters in CT images to make the edges in the images clearer.

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