[scikit-image] 回复: Fwd: Extract a particular area in document
imagepy at sina.com
imagepy at sina.com
Fri May 26 05:55:38 EDT 2017
Hi FWD:
There are many methods to do this. as you said, you had do a transform to make sure the image in standard direction.
if your image are in the standard scale, you can use a template match. but if has different scales, it will not work.
but I think you can do a threshold, then binary fill, then the [no, si] will be a solid rectangle. you can do a region analysis http://scikit-image.org/docs/stable/api/skimage.measure.html#regionprops to make sure if it is your goal (by the area, perimeter and moments). I think it will be ok!
you can also try the adboost, sift, and other local descriptor, and so on. but I think it is too fussy and waste to solve this problem.
YXDragon
----- 原始邮件 -----
发件人:Fabio <fdalforno at gmail.com>
收件人:scikit-image at python.org
主题:[scikit-image] Fwd: Extract a particular area in document
日期:2017年05月26日 14点42分
Hi all, my name's Fabio Dal Forno.
I'm a basic scikit user and i have many question too.
I've a lot of scanned document like this
And i want to extract a particular area (si no, yes or no in english) see image below
After that i want to train a neural networ for detect the data compiled by people, y,x coordinate for detect the means of the area (materials damage ecc ecc)
and a fixed dimension image for a neural network
I started to work with the following step:
1) Homography for detect document orientation after that i transform the document for rectify that
2) Homography for detect si/no area and coordinate once
the first step work wery well but the second doesn't detect anything.
Am i wrong reasoning ?
Thanks a lot and sorry for my beginner english :)
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