2008.03.29 16:26 "Re: [Tiff] TIFFReadRawStrip buffer data type", by James Sumners
This is the specifications on the image as my program sees it:
Input image specifications:
512x512 photo = 1 8bpp 1spp order = 0
res_unit = 2 xres = 72.000000 yres = 72.000000
rows per strip: 64 strips: 8 bytes per strip: 32768
And as the tiffinfo utility sees it:
TIFF Directory at offset 0x40008 (262152)
Subfile Type: (0 = 0x0)
Image Width: 512 Image Length: 512
Resolution: 72, 72 pixels/inch
Compression Scheme: None
Photometric Interpretation: min-is-black
Orientation: row 0 top, col 0 lhs
Planar Configuration: single image plane
So it looks like I am working with the data under the optimal conditions you specify.
On Sat, Mar 29, 2008 at 11:41 AM, Bob Friesenhahn <email@example.com> wrote:
Well, the image I'm reading is not compressed. So I thought the data would just be the integer color value of each pixel. If that is incorrect, how would I get that data? I want to be able to work with the color values for the pixels so that I can do my own compression.
If the image is not compressed, then you should be ok. What is the bits-per-sample of your data? If it is 8 and you are using the RGB photometric with three samples per pixel, then each byte would be one sample representing R, G, or B. If bits-per-sample is 1, 2, or 4 then there is much more work to do since multiple samples will be packed in a byte.
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