2DS Select/Volume Panel

The Select Volume menu item under the File menu button on the 2DS main window calls up the 2DS: Select Volume panel which allows you to manipulate the input, output, and process (or mask) volumes.

There are three volumes that are manipulated by 2D segmentation: input, output, and process (or mask). The top control of the Volume Control(2DS) window allows the selection of these volumes.

Input Volume

The Input volume is the set of images you want to edit (add masks to). The Volume: Input button allows you to load the data set into 2-D Seg. Input volumes must come from shared memory. To select a new input volume, select using the mouse the name of the volume in the list in the center of the window. Then select the Load/Select button. This action will be confirmed, and an opportunity to save the current working versions of the process and output volumes will be made available.

To Load an Input Volume into 2-D Seg:

  1. Load the Image into Shared Memory. This should already have been done. If you need information on how to load an image into Shared Memory, please read the Mosaic Tutorial on Loading Image Data.
  2. Left-click on the Input button
  3. Left-click in the 2DS:Select Volume menu on the filename you want to edit. i.e. IMATRONHR is selected in the panel above.
  4. Left-click on the LOAD/SELECT button.
  5. Several message boxes will appear asking you to answer a few questions "Input Volume to be selected from Shared Memory" Left-click on Cancel or Confirm.
    "Save Output Volume to Disk?" Left-click on Yes or No.
    "Save Process Volume to Disk?" Left-click on Yes or No.
    "Output Volume Should Be:" Left-click on 8 bit or 16 bit.

Output Volume

The output volume can reside in either local memory (the default), in which case it is not accessible from other VIDA modules, or within shared memory. Independent of where the output volume is stored, it can also be saved to the disk file specified by the Dir: and File: text fields. The output volume can also be copied from local memory to shared memory (in order to make it available to other VIDA modules). To copy the Output Volume (processed data) to disk:
  1. Left-click on the Output button
  2. On the line next to the word File:, type the name of the post-2D Segmentation file so it can be saved
  3. Left-click on the SAVE TO FILE button.
  4. A message box will appear asking you "Save Output Volume to Disk. Left-click on the Yes button to save the file to disk
To copy the Output Volume (processed data) to Shared Memory:
  1. Left-click on the Output button
  2. On the line next to the word File:, type the name of the post-2D Segmentation file so it can be saved
  3. Left-click ont the Shared Memory button next to the 2DS:Select Volume menu
  4. Left-click on the COPY button
  5. A message box will appear asking you, "Save Output Volume to Shared Memory. Left-click on the Yes button to save the file to Shared Memory

Process Volume

The Process volume can reside only in local memory, but can be saved to or restored from a disk file.

To save the Process volume to Disk:

  1. Left-click on the Process button
  2. On the line next to the word Dir:, type the name of the directory where the Process file will be saved
  3. On the line next to the word File:, type a name for the Porcess file
  4. Left-click on the button SAVE TO FILE button
  5. A message box will appear asking you, "Save Process Volume to Disk?" Left-click on the Yes button to save the file to Shared Memory
To load a Process volume from Disk:
  1. Left-click on the Process button
  2. Left-click in the 2DS:Select Volume Menu on the filename you want to save. i.e. IMATRONHR is selected in the panel above.
  3. Left-click on the LOAD/SELECT button.
  4. A message box will appear asking you, "Load Process Volume to Local Memory. Left-click on the Yes button to save the file to Shared Memory




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


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