I tried with 400 DPI and had set page segmentation mode to 1 - AUTO_OSD
No improvement, problem is PDF itself is of low quality.


On Monday, November 25, 2019 at 11:36:48 AM UTC-5, shree wrote:
>
> Also try with 300 dpi
>
> On Mon, Nov 25, 2019 at 9:45 PM Jeetendra Ahuja <jeetendr...@gmail.com 
> <javascript:>> wrote:
>
>> Nopes, I will do it. Thanks.
>>
>> On Monday, November 25, 2019 at 9:48:08 AM UTC-5, shree wrote:
>>>
>>> have you tried `osd` - orientation and script detection?
>>>
>>> On Mon, Nov 25, 2019 at 8:13 PM Jeetendra Ahuja <jeetendr...@gmail.com> 
>>> wrote:
>>>
>>>> So before processing a document, we want to rejects ones which are CJK 
>>>> so I've used Tesseract for this.. It does pretty good job but some times 
>>>> when document quality is low then from "Table of Contents" page, most of 
>>>> the dots are recognized as "CJK" characters. I am planning to create own 
>>>> training data but wanted to get advice from experts.
>>>>
>>>> *Config:*
>>>>
>>>>    - Tesseract 4.0
>>>>    - instance.setLanguage("chi_simB+chi_traB+korB+jpnB+engB");
>>>>    - instance.setOcrEngineMode(1);
>>>>
>>>>
>>>> Image is zoomed to 600% in Adobe PDF reader.
>>>>
>>>> Please let me know.
>>>>
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>>>> .
>>>>
>>>
>>>
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