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OCR Tips: Difference between revisions
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= FineReader tips = | |||
==== '''What works best:''' ==== | |||
'''Size, Color/Grayscale, and Resolution:'''<br> | |||
Recommended Image Resolution: 300 dpi for typical texts (printed in fonts of size 10pt or larger), 400–600 dpi for texts printed in smaller fonts (9pt or smaller). For best OCR results vertical and horizontal resolutions must be the same. See User's Guide for additional information.<br> | |||
Recommended Image Resolution: 300 dpi for typical texts (printed in fonts of size 10pt or larger), 400–600 dpi for texts printed in smaller fonts (9pt or smaller). For best OCR results vertical and horizontal resolutions must be the same. See | |||
*Fullsize, color JPEG images of herbarium specimens are ±7-15 MB in size and take about 2 minutes to process each. | *Fullsize, color JPEG images of herbarium specimens are ±7-15 MB in size and take about 2 minutes to process each. | ||
*Fullsize, grayscale JPEG images of full herbarium sheets are about 1 MB in size and take about 1 minute to process each. | *Fullsize, grayscale JPEG images of full herbarium sheets are about 1 MB in size and take about 1 minute to process each. | ||
*JPEG images | *Cropped JPEG images containing primary collection label only are about 300-600 KB in size and take 6-10 seconds to process each.<br> | ||
<br> | ==== '''What to look out for:'''<br> ==== | ||
*Setting the resolution too high (over 600 dpi) increases the recognition time, as does . Increasing the resolution does not yield substantially improved recognition results. Setting an extremely low resolution (less than 150 dpi) adversely affects OCR quality. See [http://finereader.abbyy.com/guide/ User's Guide] for additional information. | |||
*'''Pattern training:''' If using this tool, be sure to train the tool on an image that is the same resolution as the other images you wish to OCR. This tool can be useful when running the software on many labels with the same format/fonts. | |||
* | *'''Hot Folder: '''Using the Hot Folder allows for running the OCR software on batches of images. However, it does not scan barcodes in an image, only human-readable tex. When running the software on individual images (i.e. not using the Hot Folder), one can select to scan the barcode, as well as detect human-readable text. | ||
== Recognition Server == | == Recognition Server == | ||