On Sun, Mar 27, 2011 at 2:27 AM, zdenko podobny <zde...@gmail.com> wrote: > On Sun, Mar 27, 2011 at 12:45 AM, TP <wing...@gmail.com> wrote: >> On Sat, Mar 26, 2011 at 7:42 AM, zdenko podobny <zde...@gmail.com> wrote: >> >> Can somebody explain why a tif size (2480x3508 @ 8BPP) is not >> >> processed? >> >> The test image has 16 bpp. >> > Interesting. How did get this information? I tried: > > identify (imagemagick): TIFF 2480x3508 2480x3508+0+0 8-bit Grayscale > DirectClass 1.556MB > infranview "says": Original colors: 65536 (16 BitsPerPixel); > Current colors: 256 (8 BitsPerPixel); Number of unique colors: 41;
I used: ACDSee and AsTiffTagViewer (http://www.awaresystems.be/imaging/tiff/astifftagviewer.html) The results are a bit complicated but pretty sure this one tells you EXACTLY what the tiff tags contains. "Whenever a customer reports your software doesn't handle this or that particular TIFF, use AsTiffTagViewer and discover why." :P It's the only tag viewer I know of that correctly shows the ImageDescription tag for each page of a multi-page tiff. Most image viewers seem to only show the first page's ImageDescription. And since you asked, I also ran the libtiff 3.9.4's tiffinfo.exe to get: TIFF Directory at offset 0x174e32 (1527346) Image Width: 2480 Image Length: 3508 Resolution: 300, 300 (unitless) Bits/Sample: 8 Compression Scheme: LZW Photometric Interpretation: min-is-black Extra Samples: 1<unassoc-alpha> FillOrder: msb-to-lsb Orientation: row 0 top, col 0 lhs Samples/Pixel: 2 Rows/Strip: 1 Planar Configuration: single image plane Page Number: 0-1 DocumentName: C:/www/test/wwwdocs/files/ea1/ea1064bb1fdb449c28f97fa31b8e3ea6.tif Predictor: horizontal differencing 2 (0x2) Looks to me like some programs just look at Bits/Sample and forget to also take into account Samples/Pixel? -- TP -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To post to this group, send email to tesseract-ocr@googlegroups.com. To unsubscribe from this group, send email to tesseract-ocr+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/tesseract-ocr?hl=en.
