Hi
How to convert 12/16 bit dicom images to 8 bit dicom images using dcmtk 3.6.0.
Much Appreciated your help. Thanks.
Convert 12/16 bit dicom images to 8 bit dicom images
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Re: Convert 12/16 bit dicom images to 8 bit dicom images
First of all, DCMTK 3.6.0 is really ancient now, being released in 2011, i.e. 10 years ago, and I would encourage you to migrate to a newer release.
One way of converting 12/16 bit DICOM images to 8 bit DICOM would be to apply a (lossless) JPEG compression with dcmcjpeg, followed by a decompression. This is not particularly efficient, but will do the job. With newer DCMTK versions, you will have to specify --pseudo-lossless --bits-force-8 when compressing the image to achieve the effect; I am not certain if 3.6.0 already had the "--pseudo-lossless" option. If it is not present, you can omit it as this was the default in older releases. Note that certain grayscale transformations will most probably be required to make the 8-bit image look "good". Check the VOI windowing options such as --min-max-window.
One way of converting 12/16 bit DICOM images to 8 bit DICOM would be to apply a (lossless) JPEG compression with dcmcjpeg, followed by a decompression. This is not particularly efficient, but will do the job. With newer DCMTK versions, you will have to specify --pseudo-lossless --bits-force-8 when compressing the image to achieve the effect; I am not certain if 3.6.0 already had the "--pseudo-lossless" option. If it is not present, you can omit it as this was the default in older releases. Note that certain grayscale transformations will most probably be required to make the 8-bit image look "good". Check the VOI windowing options such as --min-max-window.
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