JPEG Lossless

In this mode:

ImageGear saves grayscale images as 8…16 bits per pixel, using "JPEG Lossless, Non-Hierarchical (Process 14)" transfer syntax.
ImageGear saves RGB images as 24 bits per pixel, using "JPEG Lossless, Non-Hierarchical (Process 14)" transfer syntax.

JPEG Lossless compression does not involve internal conversion or RGB rasters into YCbCr colorspace (YCC in DICOM terminology).

To save an image as DICOM JPEG Lossless, use ImGearSavingFormats Enumeration.DICOM saving format, and set SaveSyntax to ImGearDICOMTransferSyntaxes.JPEG_LOSSLESS or ImGearDICOMTransferSyntaxes.JPEG_LOSSLESS_NONH_PR_14.