Movie Viewer Main Panel

To call up this module:

The Movie Viewer module uses unique techniques to rapidly display images, including movies made using modules such as Volume Render and Surface Render. Geometric relationships and/or motion (such as myocardial wall motion through a heart beat) are perceived by viewing many frames rapidly, producing animation. This module also has the capability to flip image data sets about the major axes. You can use this module for producing video either by direct video taping of the screen or by using scan converters.

File Menu Button

Load Image Menu Item
To use the Movie Viewer, you must first load the image file into Shared Memory.The Load Image menu item under the File menu button calls up the Movie: Load Images Panel which allows you to select an image from shared memory to be used with the movie viewer.
Movie: Load Image panel -- More Information.

Save Image Menu Item
The Save Image menu item under the File menu button calls up the Movie: Save Images panel which allows you to save the movie to disk or shared memory.
Movie: Save Images panel -- More Information.

View Menu Button

Show Viewer Menu Item
The Show Viewer menu item under the View menu button calls up the Quick Viewer window, an animation window for viewing the movie.
Quick Viewer -- More Information.

Snapshot Menu Item
The Snapshot menu item under the View menu button calls up the Snapshot panel which displays a snapshot of the slice currently displayed in the animation window.

Cine Menu Button

Standard Size
The Standard Size menu item under the Cine menu button calls up a panel which animates the movie in a window with the X and Y dimensions of the movie file loaded into shared memory. The window size can be increase or decreased with the Zoom slider.

Full Screen Cine
The Full Screen Cine menu item under the Cine menu button blanks the screen and animates the image dataset in it. In this mode of Movie display, all other processes are hidden such that the dynamically displayed image data set is viewed on a black background. To stop the movie at anytime click the left-mouse button anywhere in the screen.

This form of display is particularly useful if you have a means of converting the high resolution video to standard video for recording purposes. Note, filming the movie via a video camera aimed at the screen may result in roll bars due to the beating of the two video frequencies. Please consult your local computer sales representative or a VIDA sales representative for suggested video recording solutions.

Full Screen, One Shot
The Full Screen, One Shot menu item under the Cine menu button loops through all the slices once, display them on a blank screen. Once done then screen is blank. To return the screen, click the left-mouse button anywhere.

Properties: Buttons

The Interp button interpolates (smooths) each image before displaying it.
The Flip X button flips the X axis. What was displayed on the left side of the viewer will now be displayed on the right.
The Flip Y button flips the Y axis. What was displayed at the top of the viewer will now be displayed on the bottom.
The Flip X&Y button flips the X and Y axis. The original image will be displayed on its side.

Zoom [%]: Slider

The value of this slider determines the image magnification. That is, 100% means that the program displays the image in the actual original size, a 200% value would double the actual image size.

Pan X [%]: Slider

The Pan X [%] slider moves the movie to the right or left of the screen. Draging the slider to the left, toward -100, moves the movie to the left. Draging the slider to the right, toward 100, moves the movie to the right.

Pan Y [%]: Slider

The Pan Y [%] slider moves the movie up and down. Draging the slider to the left, toward -100, moves the movie up. Draging the slider to the right, toward 100, moves the movie down.

Delay [.01 sec] Slider

The value of this slider determines the cycling delay in milliseconds. To cycle faster drag the slider to the left, toward 1. To cycle slower drag the slider to the right, toward 1000. Note: If you try to cycle too fast for your particular computer, the movie viewer will just cycle as fast as possible.

Cycle: Buttons

The Foward Button displays the slices in the foward direction.
The Reverse Button displays the slices in reverse order.
The Back & Forth Button loops forward then backward through the slices.

Inc by: Buttons and Phase/Slice Slider

If the Slice button is selected, the movie is displayed slice by slice within a phase. Furthermore the Slider is labelled "Phase:". If the movie has multiple phases, you can select which phase you want to be displayed.

If the Phase button is selected, the movie displays the same slice in each phase. Furthermore, the Slider is labelled "Slice:", and it indicates which slice number is being displayed for each phase.

Copyright 1994-99 Division of Physiologic Imaging, Dept. of Radiology, Univ. of Iowa


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