TIOParams.DICOM_RescaleSlope

Declaration

property DICOM_RescaleSlope: Double;

Description

Returns the value of the Rescale Slope tag (0028,1053).
Rescale Slope and DICOM_RescaleIntercept define a linear subset of a conceptual Modality LUT transformation.

Note: The DICOM_RescaleSlope and DICOM_RescaleIntercept tags are removed when saving DICOM if DICOM_Range = iedrAdjust

Example

// Calculate the Hounsfield unit for a pixel
// https://en.wikipedia.org/wiki/Hounsfield_scale
// hu = pixel_value * slope + intercept

// Load image
ImageEnView1.IO.NativePixelFormat := True;
ImageEnView1.IO.Params.DICOM_Range := iedrSetBlackWhite;
ImageEnView1.IO.LoadFromFileDICOM(...);

// Get Hounsfield unit
hu := ImageEnView1.IEBitmap.Pixels_ie16g[x, y] * ImageEnView1.IO.IOParams.DICOM_RescaleSlope + ImageEnView1.IO.IOParams.DICOM_RescaleIntercept;

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