Feature #525
open
CP-1264 introduced a new value for VOI LUT Function (LINEAR_EXACT)
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Description
Implementing support for this new VOI LUT Function would be straightforward (i.e. similar to SIGMOID), if there wouldn't be an issue with small values for Window Width (even < 1.0 is allowed). Therefore, the transformation pipeline in the DicomImage class library has to be extended by also supporting floating point values (32- or 64-bit) for the intermediate pixel data representation.
If I remember correctly, some forum user (?) already extended the various data type switch-statements by floating point values.
This new feature might also be interesting for RT Dose objects and some CR images ...
Updated by Jörg Riesmeier about 12 years ago
Also see CP-1316 (Clarify exact windowing function): ftp://medical.nema.org/medical/dicom/cp/cp1316_01.pdf
Updated by Jörg Riesmeier almost 12 years ago
- Status changed from New to Assigned
Updated by Jörg Riesmeier over 4 years ago
See also CP-1880 (Update Linear Exact and Sigmoid formula): ftp://medical.nema.org/medical/dicom/final/cp1880_ft_UpdateLinearExactAndSigmoidFormula.pdf