PhilipLB

Hi, I'd find this very usefull: Select either the paintbrush or the pencil. Hold down shift. The first click on the canvas will now be the startingpoint of a line and every next click with shift-down generates a line from the last click-position to the current click-position.

Do you mean this: - you add a new layer and draw everything you want to have selected black - you run the plugin and everything on the current layer which is black, gets selected ?

What are burnt edges? Could you show an example of it?

I think in no way, didn't know about it. But nonetheless usefull as I'll write at least 2 more plugins based on this.

Hi, here is a plugin to perform the basic morphologic operations dilate and erode. More to come based on this. Morphologic.zip

I think the original code is more performant.

Thanks.

Yeah, sorry, wrote a bit confusing, I'm new to the API of Paint.NET and actually new to C#. I wrote only a few plugins for TheGIMP in C so far.

Updated a minor bug in both. Could cause problems with multithreading.

Oh, thanks for that hint. Yeah, sure, of course this can happen. I'll switch to OnSetRenderInfo then.

I stayed with my first solution with the flag. A private boolean, which indicates, whether it's the first call of the render-function. If so, I loop over so whole Sourceimage to determine the min- and maxvalues of the pixels.

The difference: The default one only detects angles in a certain direction. Mine detects all edges. See on the image, how some edges aren't detected by the default-one. The ui of mine is simple. Just a slider to controll the amount of noise-reduce. First image: Really nice result with noise-reduce = 1 and then normalized (See viewtopic.php?f=16&t=23154 ).

I don't know, how the default-one works. I think it goes in a specific angle with scanlines over the image and the result is the first derive of the pixels in this direction. Mine goes in x- and y-direction with the second derive and combines the two results (Laplace-filter). First, it reduces the noise with a gaussian blurr. -> Laplace-Kernel: 0 1 0 1 -4 1 0 1 0

Sure, but a different one with some angle-stuff.

Right. I updated the zip in the first post.