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Automatic Edge detection does not work all the time

Open SumanBhowmick opened this issue 7 years ago • 9 comments

After using this library, I find that automatic edge detection does not work all the time. It works only when I capture the image of the document at a certain angle.

I am pretty much new to OpenCV. Can you suggest something to improve the automatic edge detection feature??

SumanBhowmick avatar Jun 19 '17 12:06 SumanBhowmick

@SumanBhowmick,

Did you find any solution to auto detect edge for all time ?

We are also trying, and will post here if we find.

Thanks.

kirantpatil avatar Aug 19 '17 12:08 kirantpatil

No We are also trying, and will post here if we find.

On Sat, Aug 19, 2017 at 5:53 PM, kirantpatil [email protected] wrote:

@SumanBhowmick https://github.com/sumanbhowmick,

Did you find any solution to auto detect edge for all time ?

We are also trying, and will post here if we find.

Thanks.

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waqasawan44 avatar Aug 19 '17 18:08 waqasawan44

same here https://github.com/jhansireddy/AndroidScannerDemo/issues/55

klaszlo8207 avatar Nov 17 '17 12:11 klaszlo8207

The edges are getting detected if you keep object on black background, something like black cardboard.

kirantpatil avatar Nov 17 '17 12:11 kirantpatil

kirantpatil can you help me in this?

https://i.imgur.com/81DrIIK.jpg

klaszlo8207 avatar Nov 17 '17 13:11 klaszlo8207

@klaszlo8207, keep that paper on any black object like on top of your laptop if it is black.

kirantpatil avatar Nov 17 '17 13:11 kirantpatil

kirantpatil :DDD any other ways?:) modify the c++ code?:D in the camscanner android app this is working like a charm, so it is possible!

klaszlo8207 avatar Nov 17 '17 13:11 klaszlo8207

Has this issue resolved?? I'm also not able to detect the document edges

kumar5572 avatar Sep 03 '18 10:09 kumar5572

has some body made changes to the code to detect edges. Its has been two years since the last comment :)

maxakash avatar Sep 17 '20 12:09 maxakash