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    1. COThank you very much for your answer. I have searhed a lot and there was only few resources about Stroke Filters, now I see why. It says that when we find pixel with strong response all of its neighbours should be set at same value. But as stated in this paper one "stroke" have 4 orientations, do I have to iterate 4 times through one pixel neighbourhoud(becayse of different orientation) or is there some simpler way to do that? If I have larger image, it would be a lot of time visiting same pixels. Can you suggest me maybe better way to acomplish my goal?
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    2. COI have read 20-30 papers on this subject, and all of authors have just propesed methods ... a lot of words but it is question if that methods actually works. Most of them have even same pictures as final result. This article seemed well because I have text with very specific sizes to filter out.
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    3. COI've never personally implemented this method so I can't easily answer your questions. They are good questions though, and not having them completely answered is why it's difficult to do work on the cutting edge. It seems like they have some good ideas, and figure 7 in the linked paper is convincing; but it's a question of what they are not telling you, like do they only show the 1% of images where the method actually worked? It's impossible to know the details without contacting the authors or finding someone who's spent some real time with this.
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