selvaline's profile - activity

It could be interesting! I can't use Emgu but I understand what you mean! By the way I am not sure this filter can work for me. It empathize white that has a walk like the filter's line of 4s.. But if the analyzed white pixel has another white near it, with the subtraction it will disappear.. I believe it can work by using different set of values but it's difficult to find a filter that works on every picture

Yes with a simple threshold I can preprocess the image removing the major part of grains, however I have to use another method then, because there are some grains too bright..For what concerns Hough Transform I dunno how the result will be: grains have a line walk too.. But I'll try it to see! Thank you Ben!

Thank you for the reply Keghn. Has this solution got a name or it's a filtering technique invented by you? It's a kind of mean-filtering without the division by the number of box's pixels, or am I wrong?

Hi there! I try to explain my problem.. I've an image of wood beam where I've to identify the scratches and flaws contained in. I've attached a picture to describe my problem. I've to identify the scratches surrounded by squares. The rectangles in picture were added by hand, just to illustrate my purposes. Can you suggest me some algorithms, procedures or tricks that I can adopt for my goal? I'm new to the computer vision subject and I just know the basis of opencv, so I dunno what kind of algorithms are better for me.. Thank you for the patience and the suggestions! Nikolaj

image (1920x5000 - 923 KB)

EDIT by @sturkmen :

Note : please don't upload such a big file or give a link to image. i think there is some users have a limited internet access like me :)