invert the image get the same result.

On Thursday, February 16, 2017 at 3:58:07 PM UTC+8, shree wrote:
>
> Preprocess the image, invert so that it is in white background, make it 
> 300 di.
>
> See the following for more tips
>
> https://github.com/tesseract-ocr/tesseract/wiki/ImproveQuality
>
> - excuse the brevity, sent from mobile
>
> On 16-Feb-2017 12:17 PM, "wh cc" <wenhu...@gmail.com <javascript:>> wrote:
>
>> Hi,
>> I have an image like this, it is recognized as "lLDIII", I guess the 
>> reason is that tessract considers the black line in "0" as the text. So 
>> Could I set some parameters to tell tesseract to recognize the white one?
>>
>>
>> Thanks.
>>
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