Interactive Exploration with Image Viewer App

View, explore, and edit images interactively using the Image Viewer app

Use the Image Viewer app to view and explore images. Image Viewer includes tools that you can use to examine image pixels in detail, crop an image, and measure distances between pixels. Use the imtool function to launch Image Viewer.

If you want to interact with a large image using Image Viewer, then you may notice that zooming and panning actions can be slow, or the image may not load. If this happens, create a reduced resolution data set (R-Set) to improve performance. You can use Image Viewer to navigate an R-Set image the same way you navigate a standard image.


Image ViewerView and explore images


expand all

imtoolOpen Image Viewer app
imageinfoImage Information tool
imcontrastAdjust Contrast tool
imdisplayrangeDisplay Range tool
imdistlineDistance tool
impixelinfoPixel Information tool
impixelinfovalPixel Information tool without text label
impixelregionPixel Region tool
immagboxMagnification box for image displayed in scroll panel
imoverviewOverview tool for image displayed in scroll panel
iptgetprefGet values of Image Processing Toolbox preferences
iptprefsDisplay Image Processing Toolbox Preferences dialog box
iptsetprefSet Image Processing Toolbox preferences or display valid values
isrsetCheck if file is valid R-Set file
openrsetOpen R-Set file and display R-Set
rsetwriteCreate R-Set file from image file
imtoolOpen Image Viewer app


Interact with Images Using Image Viewer App

You can display, explore, and process images interactively with Image Viewer app.

Explore Images with Image Viewer App

You can use navigation aids to magnify and pan across images. You can also see an overview of the entire image with a rectangular overlay that indicates the current region in view.

Get Pixel Information in Image Viewer App

You can display information about the location and value of individual pixels or small neighborhoods of pixels. This information updates as you move the pointer over the image.

Adjust Image Contrast in Image Viewer App

You can adjust image contrast by manipulating the histogram of intensity values or by setting the window and level.

Crop Image Using Image Viewer App

You can extract, or crop, a rectangular region of the image. You can fine tune the size and position of the crop region.

Measure Distance Between Pixels in Image Viewer App

You can measure the length of a line segment drawn between two pixels. You can refine the position of the line segment and make multiple measurements.

Get Image Information in Image Viewer App

You can get information about the image dimensions, class, image type, and file metadata.

Manage Display Preferences

You can view and edit preferences to control how images are displayed on your screen by default.