Tesseract Returns blank output file

AmitGorvadiya / tesseract-ocr

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Tesseract Returns blank output file #160

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago

What steps will reproduce the problem?
1. tesseract title.tif test_output

What is the expected output? What do you see instead?
I expect to see 'Title', but the text file is empty.  I get 

'Tesseract Open Source OCR Engine
Image has 24 bits per pixel and size (103,53)'

as output in the commandline.

What version of the product are you using? On what operating system?
2.03

Please provide any additional information below.

Original issue reported on code.google.com by pequn...@gmail.com on 24 Oct 2008 at 3:45

Attachments:

title.tif

GoogleCodeExporter commented 9 years ago

Ok I was having the same problem and I found it had to do with the file format. 
My
image was a PDF produce from a scanned image. I used gimp to extract the 
individual
pages from the pdf, and to extract the bits of text that I wanted to OCR. I 
saved the
text as tiff (using gimp) and tesseract produced an empty text file. Gocr 
works, but
with tons of mistakes. I tried converting the image to greyscale, changing the 
size,
nothing worked.

So what I did next was save the image as a bmp (again using gimp), re-open it 
and
save it as tiff, and it worked. The file size is 1/2 of the original tiff, but 
I can
find no other differences listed in the file specs. So obviously there is some
setting that tesseract doesnt like.

Original comment by uglybudg...@gmail.com on 3 Nov 2008 at 3:47

GoogleCodeExporter commented 9 years ago

no comment

Original comment by simos.mo...@gmail.com on 3 Nov 2008 at 3:56

GoogleCodeExporter commented 9 years ago

There have been several bugs associated with various bit-depths with and 
without 
libtiff. These are all fixed in 2.04.

Original comment by theraysm...@gmail.com on 14 Nov 2008 at 3:51

Changed state: Started

GoogleCodeExporter commented 9 years ago

Issue 135 has been merged into this issue.

Original comment by theraysm...@gmail.com on 14 Nov 2008 at 5:55

GoogleCodeExporter commented 9 years ago

Issue 133 has been merged into this issue.

Original comment by theraysm...@gmail.com on 14 Nov 2008 at 6:01

GoogleCodeExporter commented 9 years ago

Issue 113 has been merged into this issue.

Original comment by theraysm...@gmail.com on 14 Nov 2008 at 6:35

GoogleCodeExporter commented 9 years ago

Issue 102 has been merged into this issue.

Original comment by theraysm...@gmail.com on 14 Nov 2008 at 6:54

GoogleCodeExporter commented 9 years ago

Issue 96 has been merged into this issue.

Original comment by theraysm...@gmail.com on 14 Nov 2008 at 7:27

GoogleCodeExporter commented 9 years ago

Issue 95 has been merged into this issue.

Original comment by theraysm...@gmail.com on 14 Nov 2008 at 7:28

GoogleCodeExporter commented 9 years ago

Issue 71 has been merged into this issue.

Original comment by theraysm...@gmail.com on 28 Dec 2008 at 7:29

GoogleCodeExporter commented 9 years ago

Fixed in 2.04

Original comment by theraysm...@gmail.com on 30 Dec 2008 at 6:35

Changed state: Fixed

GoogleCodeExporter commented 9 years ago

Issue 61 has been merged into this issue.

Original comment by theraysm...@gmail.com on 30 Dec 2008 at 9:39