1994.02.08 00:55 "Photometric Interpretation question", by Doug Vander Wilt
I need independent advice on the correctness of an image from a Contex FSS5000 scanner and CADImage/SCAN ver. 2.3 for HP-UX. The scanner works great, but the images are prone to misinterpretation due to MINISBLACK. I've seen 3 different applications view these images correctly (white background) but 1 that brings it up with black background.
Based on the TIFF 6.0 spec, page 50, paragraphs 3 & 4, I plan to copy these images and just change the header to PHOTOMETRIC_MINISWHITE. But before I convert many-many megabytes, I want to be sure this is the "poli-TIFF-ly correct" thing to do. Info & sample are attached.
Thanks,
Doug Vander Wilt
Honeywell MICRO SWITCH Division
dwv@cadnet.micro.honeywell.com
$ tiffinfo dummies.tif
TIFF Directory at offset 0x8
Subfile Type: (0 = 0x0)
Image Width: 1442 Image Length: 690
Resolution: 200, 200
Bits/Sample: 1
Compression Scheme: CCITT Group 4 facsimile encoding
Photometric Interpretation: min-is-black
Thresholding: bilevel art scan
FillOrder: msb-to-lsb
Orientation: row 0 top, col 0 lhs
Samples/Pixel: 1
Rows/Strip: 512
Min Sample Value: 0
Max Sample Value: 1
Planar Configuration: single image plane