为什么会返回此错误？
root@amd-3700-2gb ~/ocr_test # tesseract -l dan pdf.png out pdf Tesseract Open Source OCR Engine v3.03 with Leptonica Error opening data file /usr/local/share/tessdata/osd.traineddata Please make sure the TESSDATA_PREFIX environment variable is set to the parent directory of your "tessdata" directory. Failed loading language 'osd' Tesseract Couldn't load any languages! Warning: Auto orientation and script detection requested,but osd language Failed to load
语言清单
root@amd-3700-2gb ~/ocr_test # tesseract --list-langs List of available languages (3): eng dan dan-frak
输出为txt
这很好,输出文本到out.txt
tesseract -l dan pdf.png out
输出PDF
这会创建out.pdf,但也会返回提到的错误,并且PDF中的可搜索文本没有意义
tesseract -l dan pdf.png out pdf
解决方法
错误消息很明确：它需要osd.traineddata文件.您可以安装或下载Orientation&来自
https://github.com/tesseract-ocr/tessdata的Tesseract脚本检测数据.