What are the numbers in Tesseract box file?
I cannot for the love of me find any documentation about how Tesseract box files work, and what the coordinates represent.
For instance, I'm getting:
T 2768 165 2789 191 0
The first token is obviously the character. I know that Tesseract uses bottom-left. 2768 should therefore be the bottom. The 4th token (2789) seems to be the top. I don't get what the 3rd (165), 5th (191), and 6th (0) tokens are. 165 and 191 are incorrect as left/right coordinates, and 0 I have no idea what it refers to.
Can anyone help me? Are these pixel coordinates, or do I have to factor in the DPI of the image?
Thanks!
image-processing ocr tesseract
asked Nov 19 '18 at 23:16
nkkollawnkkollaw
550719
add a comment |
I cannot for the love of me find any documentation about how Tesseract box files work, and what the coordinates represent.
For instance, I'm getting:
T 2768 165 2789 191 0
The first token is obviously the character. I know that Tesseract uses bottom-left. 2768 should therefore be the bottom. The 4th token (2789) seems to be the top. I don't get what the 3rd (165), 5th (191), and 6th (0) tokens are. 165 and 191 are incorrect as left/right coordinates, and 0 I have no idea what it refers to.
Can anyone help me? Are these pixel coordinates, or do I have to factor in the DPI of the image?
Thanks!
image-processing ocr tesseract
asked Nov 19 '18 at 23:16
nkkollawnkkollaw
550719
add a comment |
I cannot for the love of me find any documentation about how Tesseract box files work, and what the coordinates represent.
For instance, I'm getting:
T 2768 165 2789 191 0
The first token is obviously the character. I know that Tesseract uses bottom-left. 2768 should therefore be the bottom. The 4th token (2789) seems to be the top. I don't get what the 3rd (165), 5th (191), and 6th (0) tokens are. 165 and 191 are incorrect as left/right coordinates, and 0 I have no idea what it refers to.
Can anyone help me? Are these pixel coordinates, or do I have to factor in the DPI of the image?
Thanks!
image-processing ocr tesseract
asked Nov 19 '18 at 23:16
nkkollawnkkollaw
550719
I cannot for the love of me find any documentation about how Tesseract box files work, and what the coordinates represent.
For instance, I'm getting:
T 2768 165 2789 191 0
The first token is obviously the character. I know that Tesseract uses bottom-left. 2768 should therefore be the bottom. The 4th token (2789) seems to be the top. I don't get what the 3rd (165), 5th (191), and 6th (0) tokens are. 165 and 191 are incorrect as left/right coordinates, and 0 I have no idea what it refers to.
Can anyone help me? Are these pixel coordinates, or do I have to factor in the DPI of the image?
Thanks!
image-processing ocr tesseract
image-processing ocr tesseract
asked Nov 19 '18 at 23:16
nkkollawnkkollaw
550719
asked Nov 19 '18 at 23:16
nkkollawnkkollaw
550719
asked Nov 19 '18 at 23:16
nkkollawnkkollaw
550719
asked Nov 19 '18 at 23:16
nkkollawnkkollaw
550719
asked Nov 19 '18 at 23:16
nkkollawnkkollaw
550719
550719
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
According to documentation, the format for each line is
<symbol> <left> <bottom> <right> <top> <page>
Where:
<symbol>is the character e.g. a or b.
<left> <bottom> <right> <top>are the coordinates of the rectangle that fits the character on the page. Note that the coordinates system used by Tesseract has (0,0) in the bottom-left corner of the image!
<page>is only relevant if you’re using multi-page TIFF files. In all other cases just put 0 in here.
So in your particular case
T 2768 165 2789 191 0
would be
- character:
T
- left:
2768
- bottom:
165
- right:
2789
- top:
191
- page:
0
answered Nov 19 '18 at 23:21
Michael JasperMichael Jasper
6,32712954
Ha! Thanks for linking the documentation! I guess the <bottom> and <left> coordinates are wrong, then. It's just a character, so if that's pixels or points the numbers should be very similar. I'll look at the docs to see if I can find out more. Thanks!!
– nkkollaw
Nov 19 '18 at 23:23
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
According to documentation, the format for each line is
<symbol> <left> <bottom> <right> <top> <page>
Where:
<symbol>is the character e.g. a or b.
<left> <bottom> <right> <top>are the coordinates of the rectangle that fits the character on the page. Note that the coordinates system used by Tesseract has (0,0) in the bottom-left corner of the image!
<page>is only relevant if you’re using multi-page TIFF files. In all other cases just put 0 in here.
So in your particular case
T 2768 165 2789 191 0
would be
- character:
T
- left:
2768
- bottom:
165
- right:
2789
- top:
191
- page:
0
answered Nov 19 '18 at 23:21
Michael JasperMichael Jasper
6,32712954
Ha! Thanks for linking the documentation! I guess the <bottom> and <left> coordinates are wrong, then. It's just a character, so if that's pixels or points the numbers should be very similar. I'll look at the docs to see if I can find out more. Thanks!!
– nkkollaw
Nov 19 '18 at 23:23
add a comment |
According to documentation, the format for each line is
<symbol> <left> <bottom> <right> <top> <page>
Where:
<symbol>is the character e.g. a or b.
<left> <bottom> <right> <top>are the coordinates of the rectangle that fits the character on the page. Note that the coordinates system used by Tesseract has (0,0) in the bottom-left corner of the image!
<page>is only relevant if you’re using multi-page TIFF files. In all other cases just put 0 in here.
So in your particular case
T 2768 165 2789 191 0
would be
- character:
T
- left:
2768
- bottom:
165
- right:
2789
- top:
191
- page:
0
answered Nov 19 '18 at 23:21
Michael JasperMichael Jasper
6,32712954
Ha! Thanks for linking the documentation! I guess the <bottom> and <left> coordinates are wrong, then. It's just a character, so if that's pixels or points the numbers should be very similar. I'll look at the docs to see if I can find out more. Thanks!!
– nkkollaw
Nov 19 '18 at 23:23
add a comment |
According to documentation, the format for each line is
<symbol> <left> <bottom> <right> <top> <page>
Where:
<symbol>is the character e.g. a or b.
<left> <bottom> <right> <top>are the coordinates of the rectangle that fits the character on the page. Note that the coordinates system used by Tesseract has (0,0) in the bottom-left corner of the image!
<page>is only relevant if you’re using multi-page TIFF files. In all other cases just put 0 in here.
So in your particular case
T 2768 165 2789 191 0
would be
- character:
T
- left:
2768
- bottom:
165
- right:
2789
- top:
191
- page:
0
answered Nov 19 '18 at 23:21
Michael JasperMichael Jasper
6,32712954
According to documentation, the format for each line is
<symbol> <left> <bottom> <right> <top> <page>
Where:
<symbol>is the character e.g. a or b.
<left> <bottom> <right> <top>are the coordinates of the rectangle that fits the character on the page. Note that the coordinates system used by Tesseract has (0,0) in the bottom-left corner of the image!
<page>is only relevant if you’re using multi-page TIFF files. In all other cases just put 0 in here.
So in your particular case
T 2768 165 2789 191 0
would be
- character:
T
- left:
2768
- bottom:
165
- right:
2789
- top:
191
- page:
0
answered Nov 19 '18 at 23:21
Michael JasperMichael Jasper
6,32712954
answered Nov 19 '18 at 23:21
Michael JasperMichael Jasper
6,32712954
answered Nov 19 '18 at 23:21
Michael JasperMichael Jasper
6,32712954
answered Nov 19 '18 at 23:21
Michael JasperMichael Jasper
6,32712954
6,32712954
Ha! Thanks for linking the documentation! I guess the <bottom> and <left> coordinates are wrong, then. It's just a character, so if that's pixels or points the numbers should be very similar. I'll look at the docs to see if I can find out more. Thanks!!
– nkkollaw
Nov 19 '18 at 23:23
add a comment |
Ha! Thanks for linking the documentation! I guess the <bottom> and <left> coordinates are wrong, then. It's just a character, so if that's pixels or points the numbers should be very similar. I'll look at the docs to see if I can find out more. Thanks!!
– nkkollaw
Nov 19 '18 at 23:23
Ha! Thanks for linking the documentation! I guess the <bottom> and <left> coordinates are wrong, then. It's just a character, so if that's pixels or points the numbers should be very similar. I'll look at the docs to see if I can find out more. Thanks!!
– nkkollaw
Nov 19 '18 at 23:23
Ha! Thanks for linking the documentation! I guess the <bottom> and <left> coordinates are wrong, then. It's just a character, so if that's pixels or points the numbers should be very similar. I'll look at the docs to see if I can find out more. Thanks!!
– nkkollaw
Nov 19 '18 at 23:23
add a comment |
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