Feature Description

LEADTOOLS SDKs include flexible and time-tested image annotation technology for .NET (C# & VB), C/C++, WinRT, iOS, macOS, Java, and web developers. LEADTOOLS Annotations offers many customizable features, flexible development options, and a robust user experience.

Customizable Annotation Features Include:

 Custom Annotations

LEADTOOLS includes more than 25 built-in annotation objects that can be extended to create custom annotation objects. Developers can change the way the user interacts with existing annotations as well as create completely new annotation objects such as Triangle, Shutter, Text Bubble, Bull's-eye, and Permanent Magnifying Glass—the possibilities are endless with LEADTOOLS Annotations!

 User Interface (Toolbars, Context Menus, and Dialogs)

LEADTOOLS provides an extensive collection of objects, toolbars, menus, and dialogs within its .NET, C DLL, WinRT, iOS, macOS, Android, HTML5/JavaScript, Silverlight, and WPF annotations, which can be customized to best suit your application and targeted end-users. All user interface elements can be directly accessed to change strings, images, and event handlers. Additionally, dialog and menu strings can be localized using standard .NET Globalization and Localization to provide country/region specific versions of your application with minimal code.

 XML Annotation Save Format

LEADTOOLS annotations may be stored in multiple formats, but the XML (Extensible Markup Language) format is the most popular. There are many advantages of using the XML format, including:

 Annotation Rotate Option

With the rotate options interface, two rotate handles are displayed on a selected object. One of the handles is the "gripper" handle, which rotates the object when dragged. The other handle is the "center" handle, which determines the axis of rotation. The center and gripper handles can be moved by clicking and dragging.

The following figure illustrates a rotate by dragging the gripper handle:

annotation gripper handle

The following figure illustrates moving the center handle:

annotation center handle

 Calibrate Ruler Feature

With this feature, a user can automatically calibrate a ruler to the desired size. This is useful to allow a user to interactively measure something in an image. Any of the measurement type annotation objects can be calibrated using the Ruler Calibrate Automation Dialog.

Calibration for Ruler Annotation Object Types

 Annotation Cursors

This feature displays different cursors for many tasks in automated annotation mode. This feature displays unique annotation cursors in the following situations:

All annotation cursors may be changed to your own custom cursor.

The following figure displays some of the default cursors:

Default Annotation Cursors

 Alpha Background Fill Option

LEADTOOLS annotation objects support an alpha option to specify an alpha value from 0 (completely transparent background) to 255 (completely opaque background).

The following figure displays rectangle annotation objects with different alpha values:

Annotation Object Alpha

 Dot Dash Lines

Most of the LEAD annotation objects have Line Width and Line Style options. These options can be used to draw the annotations with varying line thicknesses and change the line style to solid, dashed, or dotted.

The following example illustrates this:

Annotation Line Styles

 Text Annotation Options

Text annotation object options include:

Annotation Text Object Styles

Technology Related to Image Annotation & Markup Customizable Features