How can I recreate this coloured pencil effect with Inkscape? The original image is just flat colours with a slight gradient on the background. I uploaded it to PhotoMania and used their coloured pencil effect which produced this output:
The export from PhotoMania is very low resolution so I'm trying to recreate the effect in Inkscape. I've played around with all the filter options, but I can't find anything that's even close.
The main issue is the way the lines extend from the cupcakes and the clouds. I can get the edge detection using a convolution filter, but I can't think of any way to have the lines extend like this.
Inkscape doesn't seem to have a transform option for custom filters, but even if it did that would only allow simple horizontal/vertical transforms, which wouldn't create this "extended line" effect.