Actual DPI is unknown as it depends on various factors (inter alia physical
dimensions of taken object and distance you took the picture from). The
easiest way to establish real DPI is to take photo of a ruler and count
number of pixels on 1 inch distance. As an example, there is approximately
use scanner
regards
Armando
On Mon, 11 Jun 2018, 17:00 Vidur Malhotra,
wrote:
> Hi,
> I was going through tesseract tutorials wherein it is mentioned that for
> Tesseract to do OCR, image should have alteast 300dpi. How is it possible?
> I tried capturing images from different phones (even
For better recognition 300 dpi is recommended.
You can use a program like imagemagick to change dpi if needed.
On Mon, Jun 11, 2018 at 8:30 PM Vidur Malhotra
wrote:
> Hi,
> I was going through tesseract tutorials wherein it is mentioned that for
> Tesseract to do OCR, image should have
Hi,
I was going through tesseract tutorials wherein it is mentioned that for
Tesseract to do OCR, image should have alteast 300dpi. How is it possible?
I tried capturing images from different phones (even iPhone 7plus), all of
them are giving 72dpi.
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