Old/tesseractFuns: Set and Query the Tesseract Object
In duncantl/Rtesseract: Interface to the tesseract OCR system
tesseractFuns R Documentation
Set and Query the Tesseract Object
Description
These functions provide ways to both set and query the state of the
tesseract object.
Usage
ReadConfigFile(api, files, debug = FALSE, ok = FALSE)
SetImage(api, pix)
SetInputName(api, name, check = TRUE, load = TRUE)
GetInputName(api)
GetImage(api, asArray = FALSE)
SetPageSegMode(api, mode)
GetPageSegMode(api)
SetRectangle(api, ..., dims = sapply(list(...), as.integer))
SetSourceResolution(api, ppi)
GetSourceYResolution(api)
SetOutputName(api, filename)
ProcessPages(filename, api = tesseract(), timeout = 0L, out = tempfile())
Arguments
api
the instance of the TesseractBaseAPI-class
in which to perform the operations.
pix
an object of class Pix from pixRead.
asArray
a logical value. If FALSE,
the image is returned as a reference to the internal C++
object. If TRUE, the contents of the C++ image are returned
as a 3-dimensional array.
ppi
the per-pixel resolution as an integer.
dims
a vector of length 4 giving the location of the rectangle
as x1, y1, width, height. This should NOT be the coordinates
of the top-left and bottom-right of the rectangle, i.e. (x1, y1, x2, y2).
The 3rd and 4th values are the width and height of the box.
...
the left, top, width and height
files
a character vector specifying the full or relative paths
to the configuration files.
name
the name of the file being processed by the OCR system.
ok
in ReadConfigFile, tesseract can locate configuration
files in its data directory (typically, /usr/local/share/tessdata or
specified with the environment variable TESSDATA)
mode
the value for the page segmentation mode for the tesseract
instance. This must correspond to one of the values in
PageSegModeValues or the corresponding R variables.
However, one can use symbolic names (lower or upper case) from this
vector, e.g., "psm_auto".
check
check to see if the file actually exists
load
load the image in the file name and set it as the current
image in the tesseract object.
filename,out
the name of the file.
This is the name of the image file to process, or the output
file to which the results of the OCR will be directed, if that
occurs. The latter is rarely of interest as we can
get this information directly from the TesseractBaseAPI
object directly.
timeout
this is almost always 0 and so not specified.
It controls how long any particular step in the processing should be
allow to take before terminating the entire process.
Author(s)
Duncan Temple Lang
See Also
tesseract
duncantl/Rtesseract documentation built on March 25, 2022, 5:50 a.m.
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| tesseractFuns | R Documentation |
Set and Query the Tesseract Object
Description
These functions provide ways to both set and query the state of the tesseract object.
Usage
ReadConfigFile(api, files, debug = FALSE, ok = FALSE) SetImage(api, pix) SetInputName(api, name, check = TRUE, load = TRUE) GetInputName(api) GetImage(api, asArray = FALSE) SetPageSegMode(api, mode) GetPageSegMode(api) SetRectangle(api, ..., dims = sapply(list(...), as.integer)) SetSourceResolution(api, ppi) GetSourceYResolution(api) SetOutputName(api, filename) ProcessPages(filename, api = tesseract(), timeout = 0L, out = tempfile())
Arguments
api |
the instance of the |
pix |
an object of class |
asArray |
a logical value. If |
ppi |
the per-pixel resolution as an integer. |
dims |
a vector of length 4 giving the location of the rectangle
as x1, y1, width, height. This should NOT be the coordinates
of the top-left and bottom-right of the rectangle, i.e. |
... |
the left, top, width and height |
files |
a character vector specifying the full or relative paths to the configuration files. |
name |
the name of the file being processed by the OCR system. |
ok |
in |
mode |
the value for the page segmentation mode for the tesseract
instance. This must correspond to one of the values in
|
check |
check to see if the file actually exists |
load |
load the image in the file name and set it as the current image in the tesseract object. |
filename,out |
the name of the file.
This is the name of the image file to process, or the output
file to which the results of the OCR will be directed, if that
occurs. The latter is rarely of interest as we can
get this information directly from the |
timeout |
this is almost always 0 and so not specified. It controls how long any particular step in the processing should be allow to take before terminating the entire process. |
Author(s)
Duncan Temple Lang
See Also
tesseract
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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