Image Region of Interest SDK Libraries

LEADTOOLS provides a variety of image processing functions for working with regions of interest in images for .NET (C#, VB, Core, Xamarin, UWP), C, C++, iOS, macOS, Linux, Java, and web developers. Create and modify regions of interest in images to process specific portions of an image, save time in OCR and barcode recognition, or perform various image analysis tasks.

Region specification

Image Region of Interest Functions

Regions of interest limit image processing functions to selected areas. There are several methods to create regions of interest including methods to combine or exclude regions. Below lists of some the methods to create regions of interest with the LEADTOOLS SDK image processing libraries:

  • Convert Curve to Bezier Points
  • Create Elliptical Region
  • Create Mask From Bitmap Region
  • Create Polygonal Region
  • Create Rectangular Region
  • Create Region From Mask
  • Create Region Based on Specific Color
  • Create Region Based on Seed Pixel and Threshold Value (Fuzzy Flood Fill)
  • Create Region Based on RGB or HSV Color Range
  • Get Region Area
  • Get Region Bounding Rectangle
  • Get Region Contour Points
  • Get Region Perimeter Length
  • Feret's Diameter or Greatest Linear Dimension (GLD) of an Object
  • Region Hole Removal
  • Resize Region
  • Set Curve Region
  • Various Region Combine Modes
Image Region of Interest Development Made Easy

Easy to Integrate

LEADTOOLS handles the heavy lifting — eliminating months of R&D, while giving you the best quality and performance available. This leaves you free to focus on other components of your application. Download the evaluation and start coding to get an idea of how much more streamlined your development will be using LEADTOOLS.

Cross platform libraries

Image Region of Interest SDK Platforms and Programming Interfaces

Projects that use LEADTOOLS Image Region of Interest libraries can be deployed to web browsers, Windows, macOS, iOS, Android, and Linux devices.

Image Region of Interest SDK libraries are available for

Start Coding With LEADTOOLS Image Region of Interest


Image Region of Interest libraries for Windows, Linux, and macOS as well as all LEADTOOLS Recognition, Document, Medical, Vector, and Imaging technologies for all development and target platforms.

Download LEADTOOLS Libraries

Online Demo Application that include Image Region of Interest SDK Libraries


HTML5/JavaScript Image Processing

Apply some of the image processing functions offered in LEADTOOLS. LEADTOOLS provides more the 200 image processing functions and only a small subset is shown in this interactive demonstration:

  • Flip
  • Histogram Equalize
  • Auto Color Level
  • Invert

Mobile Demo App

The LEADTOOLS Image Processing app applies filters and effects to images loaded from your media library or captured using your camera.