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What is the Image Display Control in LabVIEW?

Primary Software: Driver Software>>NI-IMAQ
Primary Software Version: 2.6
Primary Software Fixed Version: N/A
Secondary Software: LabVIEW Development Systems

Problem:
What is the LabVIEW image display control, how do I use it, and what versions of LabVIEW and NI-IMAQ are required to use it?

Solution:
The image display control is a LabVIEW front panel control that alows the user to display the IMAQ image data type.  This control installs with NI-IMAQ 2.6 and later, and can be used with LabVIEW 7.0 later.  Vision Development Module is not needed to use the image display control.

Overview

The image display control allows the user to display information about the image, change the current view of the image, and create a region of interest.


Tools

The toolbar on the left-hand side of the image display contains 13 tools that can be used to change the display of the image and draw various regions of interest (ROIs).

  1. Zoom Tool
  2. Selection Tool
  3. Pan Tool
  4. Point Tool
  5. Line Tool
  6. Rectangle Tool
  7. Rotated Rectangle Tool
  8. Polyline Tool
  9. Polygon Tool
  10. Freehand Tool
  11. Closed Freehand Tool
  12. Ellipse Tool
  13. Annulus Tool

Image Information

The image display control can also display information about the current image, view, and ROI.  The image information display is located below the image display and displays five elements.

  1. Image size
  2. Zoom Factor
  3. Image Type
  4. Current Pixel Value
  5. ROI Information

Properties

The visual appearance of the image display control can be changed by right-clicking on the control on the front panel.  The Visible Items category allows the user to display the Label, Caption, Scrollbars, Tools, and Image Information.

The Snapshot option gives the user the ability to display the image after the image has been disposed with IMAQ Dispose.

The Save Image... option allows the user to save the displayed image as a PNG, Bitmap, JPEG, or TIFF image.



Related Links:
Drivers and Updates: Vision Acquisition Software
Knowledgebase 3477G5HW: How Can I Programmatically Clear an Image Display Control?
Knowledgebase 3EP9S6I3: Displaying Images with NI-IMAQ and NI Vision
Products and Services: Vision and Acquisition Software

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Report Date: 10/06/2003
Last Updated: 10/03/2013
Document ID: 325ED8MU

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