2000.02.03 20:53 "Re: Simple question that became complex (long message)", by Helge Blischke
I don't really think it is a thumbnail but that is what it appears to be when I print it. The report on the Resolution line for the "thumbnail" concerns me. Is there something wrong with the image or is there a bug which is presenting the odd numbers in the "thumbnail"? Why is there no Subfile type, Thresholding, samples/pixel, and Rows/Strip on the "thumbnail"? Does this have to do with the different compression schemes?
The missing tags should correctly be interpreted as samples per pixel = 1 (as the compression is G4), rows per strip = image length (i.e a single-strip image). The resolution obviously is given in "unnamed units" (the TIFF spec says that the resolution in this case has no real meaning for a single image). So you'd have to ask the supplier of the images what the resolution unit really is and then convert ir to pixels/inch, e.g. (probably the given values are interpreted as pixels/inch as they are, thus resulting in a real "thumbnail" size).