Difference between revisions of "Documentation/Nightly/FAQ/UserInterface"

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== How to overlay 2 volumes ?==
 
== How to overlay 2 volumes ?==
# [[Documentation/{{documentation/version}}/SlicerApplication/LoadingData|Load]] the two volumes
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# Use the [[Documentation/{{documentation/version}}/SlicerApplication/MainApplicationGUI#Slice_Viewers|slice viewer controls]] to select one of the volumes as the foreground and one as the background.
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https://slicer.readthedocs.io/en/latest/user_guide/modules/volumes.html#overlay-two-volumes
# Change the opacity of the Foreground to your liking.
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# If you click on the link symbol, this happens to all viewers
 
 
== How to load data from a sequence of jpg, tif, or png files?==
 
== How to load data from a sequence of jpg, tif, or png files?==
  
# Choose from the menu: ''File'' / ''Add Data''
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See instructions here:  
# Click ''Choose File(s) to Add'' button and select ''any of the files'' in the sequence in the displayed dialog. Important: do not choose multiple files or the entire parent folder, just a single file of the sequence.
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https://slicer.readthedocs.io/en/latest/user_guide/modules/volumes.html#load-a-series-of-png-jpeg-or-tiff-images-as-volume
# Click on ''Show Options'' and uncheck the ''Single File'' option
 
# Click ''OK'' to load the volume
 
# Go to the ''Volumes'' module
 
# Choose the loaded image as ''Active Volume''
 
# In the ''Volume Information'' section set the correct ''Image Spacing'' and ''Image Origin'' values
 
# Most modules require grayscale image as input. The loaded color image can be converted to a grayscale image by using the [[Documentation/{{documentation/version}}/Modules/VectorToScalarVolume|Vector to scalar volume module]]
 
  
 
{{#ev:youtube|https://www.youtube.com/watch?v=BcnpzYE8VO8}}
 
{{#ev:youtube|https://www.youtube.com/watch?v=BcnpzYE8VO8}}
 
'''Note''': Consumer file formats, such as jpg, png, and tiff are not well suited for 3D medical image storage due to the following serious limitations:
 
 
* Storage is often limited to bit depth of 8 bits per channel: this causes significant data loss, especially for CT images.
 
* No standard way of storing essential metadata: slice spacing, image position, orientation, etc. must be guessed by the user and provided to the software that imports the images.
 
* No standard way of indicating slice order: data may be easily get corrupted due to incorrectly ordered or missing frames.
 

Latest revision as of 04:43, 21 August 2020

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