Configuration
This section lists all configuration parameters available to configure the Tesseract OCR component.
| Element | Type | Default | Description | |
|---|---|---|---|---|
| OCR Settings | tesseractPath | text | - | Tesseract binary location |
| processTimeout | number | 600000 | Time (in milliseconds) to wait before killing a tesseract process | |
| imageDirectory | text | - | Directory used to store the temporary files generated during OCR | |
| maxSize | text | 10mb | Apply image correction only for those images that fall under this size. (i.e., 250kb, 5mb, 1gb) | |
| confidenceThreshold | number | 80.0 | Minimum confidence value to accept the OCR output | |
| Image creation settings | outputFormat | select | jpg | Image format (JPG, PNG, tiff) |
| imageType | select | bilevel | Image color scale (bilevel, gray, rgba, rgb) | |
| dpi | number | 300 | Image dots per inch | |
| Mime Type settings | mimeTypeXPath | text | /doc/mimeType | XPath's expression to get the document Mime type |
| pdfMimeTypes | array | - | Mime type for PDF documents | |
| imageMimeTypes | array | - | Mime type for image documents | |
| Page splitter settings | startPage | number | 0 | Page to start processing with OCR. If the value is 0 will start from the first page. |
| endPage | number | 20 | Last page to process with OCR | |
| Advanced settings | processThreads | number | 8 | Max number of threads used by the application |
| processQueue | number | 30 | Size of application process queue, should be at least 3 times the process threads | |
| backoffTime | number | 1000 | Time (in milliseconds) to wait before trying to add a job to the queue when it is full | |
| debug | boolean | false | Check if you want debug messages enabled |
Example Configuration
{
"tesseractPath": "C:\\Tesseract-OCR\\tesseract",
"processTimeout": 600000,
"imageDirectory": "C:\\dev\\tempDir",
"maxSize": "10mb",
"confidenceThreshold": 80,
"outputFormat": "png",
"imageType": "bilevel",
"dpi": 300,
"mimeTypeXPath": "/doc/normalizedMimeType",
"pdfMimeTypes": "aspire/pdf",
"imageMimeTypes": "aspire/drawing",
"startPage": 0,
"endPage": 20,
"processThreads": 8,
"processQueue": 30,
"backoffTime": 1000,
"debug": true
}
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