Re: [tesseract-ocr] Image DPI restriction

2018-06-12 Thread zbgns
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

Re: [tesseract-ocr] Image DPI restriction

2018-06-11 Thread Armando Ota
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

Re: [tesseract-ocr] Image DPI restriction

2018-06-11 Thread ShreeDevi Kumar
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

[tesseract-ocr] Image DPI restriction

2018-06-11 Thread Vidur Malhotra
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. -- You received this message because you