why such simple word can't be recognized?

[xll...@gmail.com]

I use opencv to extract chars from image and combine them together, but tasseract failure to recognize it.

I have tested with paramters "-c tessedit_char_whitelist=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz,.-\\'"  "-psm 7" and "-psm 8", still no lucky.

please see attachment, ears.png

but some others were successful, like godmother.png.

who could teach me, please.

[zwwts...@gmail.com]

It's interesting. I'v tried many way to process the img, binary inverse, cut, resize. 

I'v tried with oem of 3.0.0 and 4.0.0,  psm of 3\6\7 

I thought maybe some one works, but actually no one did, and nothing went out

Maybe this special fonts just hit some weakness of tesseract

在 2018年8月14日星期二 UTC+8下午6:59:01，xll...@gmail.com写道：

[xll...@gmail.com]

yes, more funny thing is that if I feed all words to tesseract, it will successful read "ears" out, you can test with attachment .

在 2018年8月14日星期二 UTC+8下午8:41:06，zwwts...@gmail.com写道：

[xll...@gmail.com]

many thanks for your information.

I have tried a lot of scaling, from factor y1.0, x0.8 to y1.0, x0.5 , none of them work.

I will try do some fine tune train with this font.

thanks again for let me known this font name :)

在 2018年8月15日星期三 UTC+8下午9:49:01，James Q写道：

It looks like you may need to fine tune train Tesseract on this particular font. From the letters in you images it looks like 'Bevan', which you can download from here:

https://www.fontsquirrel.com/fonts/bevan

If you are unable to train Tesseract, I have sometimes had success by stretching (changing the aspect ratio) of the image. In this case it is quite a fat font so stretching it taller might improve the result.

Hope this helps

James

[xll...@gmail.com]

all scaling images

在 2018年8月17日星期五 UTC+8上午1:24:27，xll...@gmail.com写道：

[Art Rhyno]

Try reducing the images, e.g.:

 

convert -resize 25% ears.png ears2.png

 

art

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