Terrible accuracy even though "tessinput.tiff" looks fine.

[Mike Russell]

Hi

I installed tesseract v4.0.0 on macOS. I am trying to use it to recognize vehicle VIN code images (image is already cropped, single line 17 characters).

I have what I think is a clear image but the accuracy is terrible. I have set "tessedit_write_images" and checked the "tessinput.tiff" (attached) and it looks fine. 

For the attached image the result I get in the output file is:

"WDAPFICDOKFOES | 2"

Can anyone help me to understand what I am doing wrong?

Thanks

Michael

[Shree Devi Kumar]

Most tesseract 4.0 models have been trained on line images with 48 pixels height. Resize your image to 48 pixels height, 300 dpi and try .

my test results

ubuntu@tesseract-ocr:~/TEST$ tesseract VIN.png - --tessdata-dir ~/tessdata_fast -c tessedit_write_images=1
WD4PF 1ICDOKP075122
ubuntu@tesseract-ocr:~/TEST$ tesseract tessinput.tif - --tessdata-dir ~/tessdata_fast
Page 1
WD4PFICDOKP075122

Edited Files are attached.

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