Use the Select AVI Save Options dialog box to make all the settings that are to be used for saving an image series (time stack) as an AVI file.
Opening the dialog box
To open this dialog box, load an image series. Select the File > Save As... command. In the Save Image As dialog box, select the AVI Video File (*.avi) entry in the File Type list. Click the Options... button to open the Select AVI Save Options dialog box.
Before saving an AVI video
Before saving an image series as an AVI file, you should pay attention to the following points:
1.Reducing file size
•Saving an image series as an AVI video can quickly result in large files. If possible, reduce the image series' size before saving it as an AVI video. You can find more information about how to reduce the size of an image series here.
2.Displaying the image series the way you want
•When saving an image series as an AVI video, a number of display settings are automatically adopted. You can find more information on displaying image series here.
Description of dialog box
AVI compressor options
Modern digital cameras acquire very high-resolution images which require a correspondingly large amount of storage capacity. Therefore, the size of an AVI video that is not compressed can be considerably large.
It is possible to compress the video data during the storage in order to save disk space. To do so, your image analysis program uses one of the compressors that have already been installed on your PC. Several compressors are part of the operating system, other compressors have automatically been installed with different application programs. The AVI compressor options group indicates whether a video compressor is activated and which one it is. Click the Select... button to choose another compressor or to change its settings. In this dialog box, you will also find a description for each compressor that has been installed on your system.
Note: For technical reasons, the maximum file size for AVI files is currently limited to 2 GB (2048 MB). Due to this limitation, it may be necessary to reduce the file size of the image series in order to be able to save it. You can find more information about how to reduce the size of an image series here.
Frame rate selection
When you play back a movie in your software, you can adjust the play back speed in the Define Speed dialog box. A detailed description of this dialog box can be found here.
When you play the movie back with another output device or another software program, it will be played back at a fixed speed. Use the Frame rate selection group to set this play back speed while saving the AVI video.
In the frames per second field, enter the number of frames that are to be displayed per second by the output device. As an example: TV images run at a rate of 25 images per second, whereas cinemas show 24 images per second.
Select the Use navigation settings check box to adopt the current play back speed of the image series from the Define Speed dialog box.
In this case you should always check the play back speed before you save the AVI file. To do so, click the Play 
button in the navigation bar of the image window.
Target image dimensions
Modern digital cameras can make very large images. This results in very large video files. In the Target image dimensions group, select the size of video image you want.
Use source image size
Select the Use source image size option to read out the X/Y-resolution of the current image series and adopt it for the video file. You can also use this option to adapt the AVI video to a certain size, e.g., your monitor resolution, if you want to watch the AVI video using the fullscreen mode of your monitor.
Use custom size
Choose the Use custom size option to reduce the X/Y-resolution and in this way save storage space.
The optimal X/Y-resolution depends on the output device with which you want to watch the videos. The X/Y-resolution for VGA videos are preset, 640x480 pixels for one frame.
Note: It's not possible to reduce the image size without losing data.
Resize with interpolation
When you have selected a reduced image size for creating the AVI video, the individual frames will also need to be adapted to match it. You can employ an interpolation procedure to obtain better images when you take this step. Select the Resize with interpolation check box to use a bilinear interpolation. This interpolation averages out the gray/color values of adjoining pixels in the source image. When you employ bilinear interpolation, the gray values, or the color value transition in the resulting image will appear more continuous. However, employing this process can create the impression that the image is too soft, or is washed-out.
Clear this check box, if you do not want the image to be interpolated when you change the image's size.
Fit image to target size
The Fit image to target size check box indicates whether or not the source image's X/Y-ratio is to be retained.
Clear this check box to adapt the image series to the selected X/Y-resolution in such a way that the single frames are not distorted. If the single frames of the image series, for example, have an X/Y-resolution of 480x480, your software will add black bars, 80 pixels in width, to the left and right image border to obtain a video resolution of 640x480.
Select this check box to adapt the image series to the selected X/Y-resolution without adding black bars. Usually, the single frames will then be distorted.
1010 20092012