Use Xtreme Viewer to do fast animation of hundreds of frames in a MIE4NITF series. With Xtreme Viewer, you can view the animation in a forward or backward order, change the Frames Per Second on-the-fly (up to 30 FPS), step through frames one at a time, bookmark frame views to return to later, and apply a contrast stretch.

The Xtreme Viewer opens when you select a MIE4NITF series in the NITF Dataset Browser and click the Play in Xtreme Viewer button . Or, from the NITF Dataset Browser, right-click on a series and select Play in Xtreme Viewer.

When you move the cursor to the top-left corner of the Xtreme Viewer main view, an overview window will appear (animation must be paused for the overview to appear). The red box inside the overview window shows the extent of the current view, relative to the entire image. To change the area shown in the main view, pan around inside the overview window, or press left mouse button and drag in the main view.

The pixel or map location of the cursor will display below the main view as follows:

  • Non-georeferenced files will display only pixel location.
  • Georeferenced files will display either latitude and longitude in Lat/Lon Decimal Degrees, or the map coordinates.

Use the zoom tools in the top toolbar to Zoom to Full Extent , Zoom In , Zoom Out , or Zoom to Full Resolution . Rolling the mouse wheel will also zoom in or out of the main view.

Player Controls


The blue buttons located at the bottom of the player control the animation. The Frame progress bar appears above the controls.

From left to right, the player buttons do the following:

  • Go to the Beginning jumps to the first frame in the series.
  • Step Backwards goes backwards through the frames, one frame per click.
  • Play Backwards animates the series as a loop, starting with the last frame of the series and ending with the first frame.
  • Pause pauses animation.
  • Play Forwards animates the series as a loop, starting with the first frame of the series and ending with the last frame.
  • Step Forwards goes forwards through the frames, one frame per click.
  • Go to the End jumps to the last frame in the series.
  • Play Back and Forth animates the series as a back and forth loop.

Another way to animate the frames is by rolling the mouse wheel. Hold the cursor over the Frame progress bar until the cursor pointer turns into a hand, then roll the mouse wheel forwards or backwards.

Animate a Subset of Frames

You can set limitations on the range of frames to include in the animation:

  1. Hover the cursor over the Frame progress bar to see a pop-up box with the frame number.
  2. Move the cursor over the progress bar until you see the number of the frame you want to start at, then right-click and select Select Bower, or double-click. A vertical mark is added to the progress bar
  3. Move the cursor over the Frame progress bar again until you see the number of the frame you want to end with, then right-click and select Select Bower, or double-click. A second vertical mark is added, and a rectangular box appears in the progress bar to indicate there is a selected subset of frames.
  4. Click the Play Forwards, Play Backwards, or Play Back and Forth buttons, and the animation will be limited to the frames that were selected.

To remove the bowers:

  1. Hover the cursor over the Frame progress bar.
  2. Right-click and select Clear Bowers.

The next time you click any of the Play buttons, the animation will include all of the frames.

Speed and Stretch Controls


To adjust the animation speed or apply a stretch, use the controls described below:

  • When in a Play mode, the Frame Rate will display the current FPS of the animation. Use the FPS drop-down list to change this setting on-the-fly.
  • You can additionally increase or decrease the speed of the animation from the Speed drop-down list.
  • Move the slider bar to apply a contrast stretch to the animation on-the-fly. Click the Reset Contrast button next to the slider to return to the default contrast.

Frame Controls


Use the controls described below to perform various actions on frames.

Bookmarks

You can add bookmarks to frames and return to them later. A bookmark saves the zoom, location, and time. Bookmarks are retained only for the current Xtreme Viewer session.

  • To bookmark a frame, click the Add Bookmark button.
  • To go to a bookmarked frame, select the bookmark from the Saved Bookmarks drop-down list.
  • To clear the bookmarks from the current Xtreme Viewer session, select Saved Bookmarks > Clear Bookmarks.

Go To

Using the Go To field, you can jump to a specific frame by entering a frame number, Pixel or Map coordinates, or time value.

  • To go to a frame by number, enter the specific frame number.
  • To go to a frame by Pixel or Map coordinates:
  • Enter PixelX,PixelY as x,y points.
  • Enter MapX,MapY as x,y points. If the x and y values are greater than 30,000, ENVI assumes it is a map coordinate.
  • Enter Lat,Lon in decimal degrees format. For example: 32.8753,-95.7771.
  • To go to a frame by time, use ":" to separate hours and minutes and "." to separate minutes and seconds. For example:
  • Enter 10.0 to go to the frame for time 00:10.00.
  • Enter 14:27 to go to the frame for time 14:27.00.

Open in ENVI

To send the currently displayed frame to ENVI, click the Open Frame in ENVI button.