Bilateral Image Filter

[Meisspa]

Hello,

has someone an idea if a bilateral filter for image smoothing is available in the vision framework? I did not find anything similar. At the moment I use a median filter for image smoothing (remove noise an texture) but the results produced by ImageJ / Fiji with a bilateral Filter are a lot more impressive.

Best regards,

Paul

[Klemen]

Hello,

there is no bilateral filter. You can implement it yourself or (if you just need to use it) use OpenCV's implementation (as a .dll):

http://docs.opencv.org/modules/imgproc/doc/filtering.html?highlight=bilateralfilter#bilateralfilter

If you would like to use the OpenCV implementation and are having problems implementing it, I have this filter already implemented for filtering depth images. Tell me and I can share it with you.

Best regards,

K

[Meisspa]

Hi Klemen,

I had a look to your blog and found that "hough circle" opencv dll implementation. I found the cpp-source for the dll wrapper and remembered that is a long long time ago I coded C++ at school.  So I may ask you to give me the wrapped dll? I can give you only a virtual granola cereal bar because I am sure I have no piece of code which is interesting for you in exchange.

Best regards,

Paul

[Klemen]

Hello,

sure, here you go (please see the attachment). The .dll was built using OpenCV 2.4.6.

Best regards,

K

[Meisspa]

Hello Klemen,

thank you very much! You made my day, a new toy for my project!  I only have one problem because I get a nasty "access violation" error. I tried to implement your DLL as given in the "function prototype" but maybe I overlooked something. So I created a Test vi and put it into the attachment.

Could you give me a hint where I have make a mistake in the code?  Thank you very much!

Paul

[Klemen · Accepted solution]

Hello,

please see the image (block diagram) below:

Try allocating memory for the new image. Tell me how it goes.

Best regards,

K

[Meisspa]

Hello Klemen,

after seeing your example it is so obvious.  Allocate a blank array as placeholder in the memory for the output pointer!  Works great!

Thank you!

Best regards,

Paul

[lizhuo_lin]

Hi Meisspa

I download the dll and the vi, but there always some error missing some dll, I already get opencv 2.4.6. Do I I need to install the vs2010?

[Rahulbala]

Hi,

I have installed latest OpenCV version, I am getting this error

How to build a .dll for the new opencv version?

Thanks

Rahul