Adding custom color LUT to Weasis UI

[Bharys J]

Hi, 

In Weasis viewer, can we add a custom color LUT to the ones offered by weasis in the dropdown(...NIH, Rainbow1, Rainbow2, ...) . Please refer the pic below. 

We can add a custom color LUT by setting the photometric interpretation but wanted to know if there is a way to add it to the dropdown list as seen in the picture

Thanks

[Nicolas Roduit]

The LUTs are located in the app/resources directory which can be modified (by adding or removing files).

If you use weasis-pacs-connector to launch Weasis then you can also have your own resources by setting the property "weasis.resources.url" (see in the preferences table)

[Bharys J]

Thanks, will look into it

[Bharys J]

LUT's work with float pixel data as well even if the range length of floatpixel array and LUT's are different. I didn't expect it to work with floatpixelarray.  I wanted to know how is the mapping done from float pixel array to LUT table when their range is of different lengths, is it a linear mapping from min-max of floatarray to min-max of LUT?

[Nicolas Roduit]

Pseudo-color is applied to byte pixel values after all the DICOM W/L transformations (which can be linear or non-linear): Modality LUT -> VOI LUT -> PS LUT 

[Bharys J]

Thank you