I plan to use Pseudo Color Softcopy presentation state(PCSPS) to map pixel values from grayscale space to rgb space. I don't want set the photometric interpretation in the original dicom file to 'Palette color'(it's MONOCHROME2) and add color lut to avoid editing/copying the original file(btw the above method works for getting false color images)
I created a presentation file(*.pre) with the following fields where the reference SOP Instance UID refers to my dicom file. When I load the presentation file into the weasis I can see the effects of changed Modality and VOI but color palette lut is not working, image is still a grayscale image.
(0002, 0001) File Meta Information Version OB: b'\x00\x01'
(0002, 0002) Media Storage SOP Class UID UI: Pseudo-Color Softcopy Presentation State Storage
(0002, 0003) Media Storage SOP Instance UID UI: 1.2.826.0.1.3680043.8.498.10772247590204536926265311115669287656
(0002, 0010) Transfer Syntax UID UI: Implicit VR Little Endian
(0002, 0012) Implementation Class UID UI: 1.2.40.0.13.1.4
(0002, 0013) Implementation Version Name SH: 'graphic_1.0'
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(0008, 0016) SOP Class UID UI: Pseudo-Color Softcopy Presentation State Storage
(0008, 0018) SOP Instance UID UI: 1.2.826.0.1.3680043.8.498.10772247590204536926265311115669287656
(0008, 0023) Content Date DA: '20220602'
(0008, 0033) Content Time TM: '195422.999854'
(0008, 0060) Modality CS: 'PR'
(0008, 1010) Station Name SH: 'DellXPS'
(0008, 103e) Series Description LO: 'GSPS'
(0008, 1115) Referenced Series Sequence 1 item(s) ----
(0008, 1140) Referenced Image Sequence 1 item(s) ----
(0008, 1150) Referenced SOP Class UID UI: CT Image Storage
(0008, 1155) Referenced SOP Instance UID UI: 1.2.826.0.1.3680043.8.498.14003991661580071171173424711461917486
---------
(0020, 000e) Series Instance UID UI: 1.2.826.0.1.3680043.8.498.90028613279640809707933154515673507962
---------
(0010, 0010) Patient's Name PN: 'Test'
(0010, 0020) Patient ID LO: '123'
(0020, 000d) Study Instance UID UI: 1.2.826.0.1.3680043.8.498.63124762837262268223850956817440292415
(0020, 000e) Series Instance UID UI: 1.2.826.0.1.3680043.8.498.50191488873500476754366946620234552528
(0020, 0010) Study ID SH: '1_PR'
(0020, 0011) Series Number IS: None
(0020, 0013) Instance Number IS: '15'
(0028, 1052) Rescale Intercept DS: '5.0'
(0028, 1053) Rescale Slope DS: '2.0'
(0028, 1101) Red Palette Color Lookup Table Desc US: [256, 0, 8]
(0028, 1102) Green Palette Color Lookup Table De US: [256, 0, 8]
(0028, 1103) Blue Palette Color Lookup Table Des US: [256, 0, 8]
(0028, 1201) Red Palette Color Lookup Table Data OW: Array of 256 elements
(0028, 1202) Green Palette Color Lookup Table Da OW: Array of 256 elements
(0028, 1203) Blue Palette Color Lookup Table Dat OW: Array of 256 elements
(0028, 2002) Color Space CS: 'SRGB'
(0028, 3110) Softcopy VOI LUT Sequence 1 item(s) ----
(0028, 1050) Window Center DS: '127.0'
(0028, 1051) Window Width DS: '255.0'
---------
(0070, 0080) Content Label CS: 'PRE_PSEUDO_COLOR'
(0070, 0082) Presentation Creation Date DA: '20220602'
(0070, 0083) Presentation Creation Time TM: '195422.999854'
My desired output is what we get when the photometric interpretation is set to Palette Color, but I'm not able to get the color image using PCSPS. Can I get the same effect using PCSPS file with the photometric interpretation set to 'Monochrome2' in the reference dicom file?
