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Questions on OCR evaluation #5

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Soongja opened this issue Jan 3, 2023 · 2 comments
Open

Questions on OCR evaluation #5

Soongja opened this issue Jan 3, 2023 · 2 comments

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@Soongja
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Soongja commented Jan 3, 2023 •
edited

Hi, I have a few questions on OCR evaluation.

  1. When evaluating OCR performance on DIR300 dataset(or DocUNet benchmark), the size of the predicted image and GT image are different. I suppose you have resized one of the two in advance. To which size did you resize the images?(predicted size or GT size?)

  2. Which tessdata(traineddata) did you use for Tesseract?(tessdata_fast or tessdata_best or tessdata)
    reference: https://tesseract-ocr.github.io/tessdoc/Data-Files.html
@Soongja Soongja changed the title Questions on evaluation Questions on OCR evaluation Jan 5, 2023
@fh2019ustc
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fh2019ustc commented Jan 5, 2023 •
edited

Hi, sorry for the late reply due to my health.
(1) I have uploaded the evalUnwarp.m in this repo.
(2) For the OCR evaluation, I do not resize the two images. Maybe you could explore the impact of resize operation.
(3) I didn't pay particular attention to this problem. I download the tesseract from the link and the version is 5.0.1.20220118.
Hope this helps~!

@Soongja
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Soongja commented Jan 10, 2023

Thank you for your reply! I was able to evaluate correctly.

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@Soongja @fh2019ustc