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Diffstat (limited to 'doc/Devices.htm')
| -rw-r--r-- | doc/Devices.htm | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/doc/Devices.htm b/doc/Devices.htm index b4dee7e62..ec21350e9 100644 --- a/doc/Devices.htm +++ b/doc/Devices.htm @@ -70,13 +70,17 @@ <li><a href="#BMP">BMP file format</a></li> <li><a href="#PCX">PCX file format</a></li> <li><a href="#PSD">PSD file format (DeviceN color model)</a></li> +<li><a href="#PDFimage">Bitmap PDF output, PCLm output</a></li> +</ul> +<li><a href="#OCR-Devices">OCR Devices</a></li> +<ul> +<li><a href="#OCR">OCR text output</a></li> +<li><a href="#PDFocr">Bitmap PDF output (with OCR text)</a></li> </ul> <li><a href="#High-level">High level formats</a></li> <ul> <li><a href="#PDF">PDF file output</a></li> -<li><a href="#PDFimage">Bitmap PDF output, PCLm output</a></li> <li><a href="#OCR">OCR devices</a></li> -<li><a href="#PDFocr">Bitmap PDF output (with OCR text)</a></li> <li><a href="#PS">PostScript file output</a></li> <li><a href="#EPS">EPS file output</a></li> <li><a href="#PXL">PCL-XL file output</a></li> @@ -954,9 +958,11 @@ of 'high-level' formats. These allow Ghostscript to preserve (as much as possible) the drawing elements of the input file maintaining flexibility, resolution independence, and editability.</p> -<h2><a name="High-level"></a>High-level devices</h2> +<hr> -<h3><a name="OCR"></a>Optical Character Recognition (OCR) output</h3> +<h2><a name="OCR-Devices"></a>Optical Character Recognition (OCR) devices</h2> + +<h3><a name="OCR"></a>OCR text output</h3> <p> These devices render internally in 8 bit greyscale, and then @@ -974,12 +980,23 @@ resolution independence, and editability.</p> standard Tesseract tools. </p> <p> - These files are looked for from a variety of places. Firstly, - any files placed in "Resource/Tesseract/" will be - included in the binary for any standard (COMPILE_INITS=1) build. - Secondly, files will be searched for in the current directory. - Thirdly, files will be searched for in the directory given by - the environment variable TESSDATA_PREFIX. + These files are looked for from a variety of places. +</p> +<ul> + <li>Firstly, files will be searched for in the directory given by the + environment variable TESSDATA_PREFIX. + <li>Next, they will be searched for within the ROM filing system. Any + files placed in "tessdata" will be included within the ROM + filing system in the binary for any standard (COMPILE_INITS=1) build. + <li>Next, files will be searched for in the configured 'tessdata' path. On + Unix, this can be specified at the configure stage using + '--with-tessdata=<path>' (where <path> is a list of + directories to search, separated by ':' (on Unix) or ';' (on Windows)). + <li>Finally, we resort to searching the current directory. +</ul> +<p> + Please note, this pattern of directory searching differs from the original + release of the OCR devices. </p> <p> By default, the OCR process defaults to looking for English text, @@ -1042,6 +1059,8 @@ resolution independence, and editability.</p> </p> <p> +<hr> + <h2><a name="High-level"></a>High-level devices</h2> <h3><a name="PDF"></a>PDF writer</h3> |