fix polygon generation problem

[kouxichao]

When I use the image below to test the code and generate a polygon, Longer curved text does not produce a polygonal box，the result is shown in the figure.

I found that it is because the scanning of the text area is simply a scan in the w direction, but w is not necessarily a longer side, causing certain problems. After the change, the result is as shown below.

[kouxichao]

But when I see if there is such a problem in the corresponding literature, I found that the test images in the literature does not seem to have this problem.

[ghost]

@YoungminBaek Merge it.

[visiont3lab]

@kouxichao kouxichao, I try the code you suggested, but I get this image. I need to modify something else, or tune some parameters more?

Many thanks

[kouxichao]

@visiont3lab have you fixxed this problem? it looks like you didn't set the --poly option in command

[visiont3lab]

Dea xichao, I've seen the setting 1minute, after i sent the e-mail to you. Is working smooth now, Many thanks Best regards Daniele Il giorno lun 21 ott 2019 alle ore 13:18 xichao <notifications@github.com> ha scritto:

…

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[BhavanaMidde123]

@kouxichao kouxichao, I try the code you suggested, but I get this image. I need to modify something else, or tune some parameters more?

Many thanks

yes, same problem for me have you modified the code