SA 5 has some features that make it fairly easy to get going simulating the old MSG Evolver ArtMapper. The SA5 paint synthesizer is very flexible, and can emulate what the old ArtMapper did.
I posted this as an answer to a forum discussion today, but i'm duplicating it here for future reference for people interested in the topic.
First, you want to make a path start regionize paint preset.
So, there is a paint synth macro edit command that allows you to create a default path start regionization preset in one click.
Running the Default Fill Regionize Edit macro edit command (click the arrow to run the command) edits the paint synthesizer settings to use a default path start regionize effect. It fills the individual regions with solid color.
And another one that lets you build a MSG brush off of the current MSG preset in one click.
So, clicking the Make MSG Preset macro edit command edits the current paint synthesizer so that the fill is coming from the MSG Brush Load.
This default msg brush load is going to use whatever the current msg preset is for the MSG effect. So if it's a black and white msg output texture, then every path start region will be painted with the MSG effect (which is a bw texture that might have no relationship to the source image.
SA 5 has an additional Algorithm 2 option at the bottom of the MSG Brush Load control panel. You can use that to bring up different colorization or other effects that get run on the MSG output prior to using it as a paint fill.
In the screen shot above, i have the Algorithm 2 option set to the PaintColor MeanShift effect algorithm. this performs a colorization effect based on the local source image statistics for the region being painted.
Here's a simple example.
The current MSG preset is a simple bw texture generator.
Running the Default Fill Regionize edit gives the following output.
Note that the MSG effect is not being used.
If you then run the Make MSG Paint macro edit, you get the following result.
Note how the BW texture MSG effect is now being used for each region fill.
Algorithm 2 in the MSG Brush Load control panel is set to None in this example. If i then set it to the PaintColor MeanShift option i get the following result.
Note how the individual MSG generated regions are now colorized.
There are lots of different colorization options available for Algorithm2. they all look different. Experimentation is the best way to figure out how they look.
To use a different path start regionize generator with a different visual appearance, just got the Path Start control panel and change the generator to a different regionize option. The default macro edit is using the AdvWatershed generator as seen below.
If you change that generator setting to a different regionize option ( i used Adaptive Block Regionize below), then you can generate a different visual appearence for the generated MSG filled regions.
Here's the output for generator edit shown above.
Note how the visual appearance of the individual path start regions has changed.
If you don't know how to get to the paint synth macro edit commands, they are located in the integrated help browser. Open the Help window if it's not already up in your main workspace.
Then click on the Paint Synth macro Edit link. That will bring up the paint synth macro edit commands. Clicking on any of the active link edit commands will run that macro edit.