when specify the white-list, why show the following effect?

[gbolin]

---

Environment

• Tesseract Version: 4.0.0-alpha
• Commit Number:
• Platform:

Current Behavior:

I am using the tesseract to detect the chi_sim, for example "2017年11月06日”.
when I using the following command:
tesseract XX.jpg stdout -l chi_sim --psm 7 --oem 0,
it outputs:2017年10月 12 臼
but when I use this one:
tesseract XX.jpg stdout -l chi_sim --psm 7 --oem 0 -c tessedit_char_whitelist="0123456789年月日"
it outputs:
2017 10 12
it looks that after I specify the whitelist, the letter "年” and “月” go missing while not specify, it is there, why?

Expected Behavior:

input: tesseract XX.jpg stdout -l chi_sim --psm 7 --oem 0 -c tessedit_char_whitelist="0123456789年月日"
output: 2017年10月 12

Suggested Fix:

in my opinion, whitelist means the result filter, for example:
input "6758490210", the whitelist is as: "02468"
the output should be:"684020"

sincerely thanks for your answer.

[wosiu]

whitelisting does not work for LSTM.
#751

[ghost]

Not sure if this is related but we've had this issue for a long time:
#960