Importing the First Image Volume using a URL

The first image volume has the following special properties:

• No other images can be displayed until the first image volume has been loaded or imported
• All subsequent image volumes must have the same dimensions as the first image volume and will be discarded if they do not
• Loading or importing a new first image volume will cause all other images to be discarded if they do not match the dimensions of the newly loaded or imported first image volume
• Only the first image volume can be modified or saved

Files in the Analyze and MINC Image formats must be loaded rather than imported, and files in BMP and FITS format must be imported directly by selecting the file name.

• uncompressed Tagged Image File Format (TIFF)
• zipped TIFF format
• Graphics Interchange Format (GIF)
• Joint Photographic Experts Group (JPEG) format

To import the first volume image using a URL:

• From the main MultiTracer window "File" menu, choose "Import First Volume ..."
• Press the button labelled "Import URL..."
• Type the URL into the input window. URL's of uncompressed TIFF files must end with '.tif', and URL's of zipped TIFF files must end with '.zip'. Examples of acceptable URL's include:
  • http://www.bmap.ucla.edu/image.tif
  • file:///Users/roger/image.jpg
• Press the 'OK' button.
• Large files may take several seconds to load
• Once the file is loaded, the image should appear in the display region. If no prior image has been loaded, MultiTracer will automatically take you to a plane in the middle of the image and will adjust the intensity of the display to a (usually) reasonable value. If the display appears black, this may reflect a problem with the automatic intensity adjustment, and you may need to set the intensity manually.

If you have already loaded or imported a file and choose to import a new first image volume with different dimensions, any tracings of structures will be discarded (you will be given a opportunity to save them first). Nonetheless, it is always a good idea to save your traces before you import a new image.

If you have previously loaded or imported a file and choose to import a new first image volume with the same dimensions, you will be given the option to discard or to retain any existing traces.

File importing in MultiTracer relies on public domain Java classes in Wayne Rasband's ImageJ 1.29 program. If you want to help support importing of additional file formats into future versions of MultiTracer, please consider contributing code to Wayne Rasband for incorporation into ImageJ.

Modified: April 22, 2003