[WEBINAR] The New Normal: Dealing with the Reality of an Unsecure World

Alpha Value

Definition - What does Alpha Value mean?

In the context of Java imaging, the alpha value specifies the amount of transparency in an image. Java alpha channels carry transparency information for each image. Alpha values range between 0.0 and 1.0 inclusive, where 0.0 is completely transparent and 1.0 is completely opaque. Transparency effects may be achieved by using alpha values.

Techopedia explains Alpha Value

Transparency is the physical property of a material that specifies the amount of light that can pass through the material. Glass is a good example of a transparent material. Objects that do not allow light to pass through are opaque. In Java imaging, the source image disappears when the alpha value is 0.0, and it is completely opaque when the alpha value is 1.0. Thus, any alpha value between 0.0 and 1.0 may be selected for varying degrees of transparency. The AlphaComposite class uses alpha values to create show-through imaging effects.

The following is an alpha value example: Let circle A be the destination and circle B be the source. When circle B is superimposed on circle A, circle A’s degree shown through circle B may be varied by adjusting circle B’s alpha value. If circle B has an alpha value of 1, it is opaque. Thus, circle A may not be seen through B. When circle B has a value of 0, it is transparent, and circle A is fully visible.

This definition was written in the context of Java

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
"Techopedia" on Twitter

Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Free Whitepaper: The Path to Hybrid Cloud
Free Whitepaper: The Path to Hybrid Cloud:
The Path to Hybrid Cloud: Intelligent Bursting To Amazon Web Services & Microsoft Azure
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.