Lets a caller to Compress tell whether data needs to be transformed before compression. It is only relevent if the image has a Planar Configuration value (0028,0006) of 1.

If this property is true, then the compressor expects data in "by pixel" mode, irrespective of the stated Planar Configuration, so DicomObjects will apply a suitable transformation pre-compression.

If this property is false, then the compressor can use data in the original form as stated by the Planar Configuration, so pre-compression transformation is not necessary.