Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » R »

ROI - return on investment/region of interest

(1) Short for return on investment, ROI is an accounting formula used to obtain an actual or perceived future value of an expense or investment.

(2) Short for region of interest, it is a term most commonly used in reference to a "machine vision" field of view (i.e. digital camera, scanner, medical x-ray equipment, etc.). 

(3) Short for region of interest (ROI) coding it is a function supported by JPEG2000 it enables a non-uniform distribution of the image quality between a selected region (the ROI) and the rest of the image (background).

8 Agenda Apps to Help Students Stay Organized

Webopedia's student apps roundup will help you to better organize your class schedule and stay on top of assignments and homework. Read More »

List of Free Shorten URL Services

A URL shortener is a way to make a long Web address shorter. Try this list of free services. Read More »

Top 10 Tech Terms of 2015

The most popular Webopedia definitions of 2015. Read More »

Java Basics, Part 1

Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »

Java Basics, Part 2

This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »

The 7 Layers of the OSI Model

The Open System Interconnection (OSI) model defines a networking framework to implement protocols in seven layers. Use this handy guide to compare... Read More »