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The way to create an art work "Shinjyuku".
In this corner, Abstract of usage of SIC is shown. To do that, we will take example by "Shinjyuku" which has got an excellent award at 9th Toyama CG Contest.

The photo image for SIC is better to be applied by a blur filter because almost every images has artifacts coursed to jpeg compression.
The photo image is shown below.

This image was captured by a digital camera. Such type of image has visible noise is less than other images but they usually have square noises by jpeg-compression and excessively enhanced edge. That why, You have to chose
filter->blur->Gaussian-blur(blur radius=3).

For a preparation of the processing, Let's make new directory named "Shinjyuku" and put the this photo image into the directory. Let us call this directory a working directory.

>mkdir Shinjuku
>cd Shinjyuku
>cp ../shinjyuku.jpg .

From now on, the new files created in the process is in the working directory.
Then, run the Gimp.
Of course, in this time, SIC's plugins have to be in the .gimp-1.x/plug-ins.

Common processing for every SIC creation (not recorded in the history)

Created image by SIC has a record that what kind of plugins are applied. That record is called the history. If you read the history, You can make the similar creation. Almost all of scripts are recorded into the history, but several common scripts that always applied to the image are doesn't recorded. Two plugins in this section are such type of plugins.

The processes below are applied to the image finished preparation above. The first plugin "Gklab" has the function to convert rgb color space into lab color space.

First, Adjust the pointer of your mouse on this image and click a right button. Then, a pulldown menu will appear.
Chose the "Synergistic->1->Gklab" from the menu.

The parameter window below will appear.

The parameter you can chose is only a mode parameter. You have to neglect a (dummy) parameter. All SIC process have to be executed in a Lab color space, chose the "RGB to L*a*b*" and click "OK", then, this image turned into a pinkish image.

On this pink image, click the right button to get the pulldown menu.
Then, get a chose "Synergistic->1->1GkDirec "
Because 1GkDirec has no parameter to chose, just put the "OK".
When this process is finish, new red image appear on another window. This image is the result of edge elements extraction. Let us call this image an edge image from now on.

These processes are always required for every SIC creation.

Plugins for Image Analyzing (recorded in the history)

On this pink image, click the right button to get the pulldown menu.
Chose "Synergistic->1->2GkMeanAlgo".
The window below open.

"Source 1" = the red image and
"1 Segment Number" = 1 AdaptiveInitialValue.

Chose the red image as "Source 1".
You can select 0 Fixed Initial Value or 1 Adaptive Initial Value as "1 Segment Number".

Hints of selection of "1 Segment Number".
0 Fixed Initial Value produces similar sized blush strokes and this condition dose not terribly break the taste of the original photo.
1 Adaptive Initial Value produces large sized blush strokes on little texture background.

To draw sky part boldly by large brush strokes, 1Adaptive Initial Value is selected. Other parameter are left to be default value.
This process need about 5 minutes which depends on a CPU or an image size.
When the process is finished, a green image emerges and the file named "map" is created in the working directory where gimp was started.

"2 Weight L*" = 4,
"3 Weight a*" = 1,
"4 Weight b*" = 1,
"5 Weight function for Color" = 4,
"6 K" = 0,
"7 Threshold" = 10,
"8 Direction X" = 50,
"9 Direction Y" = 50 and
"10 Divided segments Number" = 3.

If you use Windows, it is basically same. However, if you start by clicking a GIMP shortcut on the desktop, a map file is created in C:\Program Files \GIMP\images.

[Current Parasite...]
Current Parasite shows the comments in parasite.
The comments show that this image have been created by what plugins with what parameters. That's why, you can understand how to create a same kind of image by your SIC.
This is very important characteristics of SIC. We regard not only image but also the comments as a artwork. Because we adopted this manner, all works created by SIC become references for a creation of new work.

The image above has comments: "plugin_gk_mean_algo-01-04-01-01-04-00-10-050-050-03" in its comment line. It has 10 number groups and each number group corresponded to each parameter cumbered by from 1 to 10 in the GK_Mean_Algo window.
First 01 mean1 Adaptive Initial Value or only 1 is left in a comment line. If 0 Fixed Initial Value is selected, it would be shown by 00. This comment line has no the name of a selected edge image as source1 and dummy. It makes this plugin to save this information to check the box "Export to File" and to click the "OK".

We need to analyze this image.
On this green image, click the right button to get the pulldown menu.
When you chose "Synergistic->1->3GkAddPrincipal", the window below is appear.

The only parameter you can select is "mode".
"2 map_28 and map_28_abst(recommended)" should be selected without special intention.
This process make new files "map_28" and "map_28_abs"in the working directory but the image dose not change.
As the result of this process, in the comment lines of the green image new line is added which becomes

"2 map_28 and map_28_abst(recommended)" is expressed by 02.

On this green image, click the right button to get the pulldown menu again.
And select "Synergistic->1->4GkIMerge " in the menu.

"1 Map Set"= 0map_28(strongly recommended),
"2 Threshold"= 80,
"3 Number of Segments"= 9 and
"4 Edge Threshold"= 98.

On the emerged pop-up window, "0map_28(strongly recommended) " is usually selected as mode parameter. We selected default value for other parameters, but if you need higher fidelity of a work, The higher value;for example 150, must be selected as "2 Threshold"
This plugin make new file "map_28_merged"
As the result of this process, in the comment lines of the green image new line is added which becomes

This plugin is last one of analyzing process. Like former plugin, click the right button on this green image to get the pulldown menu. And select "Synergistic->3->GkAnalyse ."

"1 Map Set" = 2 abst-map-set.
Basically SIC has three deferent map sets. This plugin creates one of these three map sets for preparation of a next step. Because one of three was already created by previous processing, two of three are selected and created here. The one is 0 imp-map-set and the another is 2 abst-map-set. You can chose one of them as "1 Map Set". In the art work"Shinjuku", We chosen 2abst-map-set.

0 imp-map-set can create relatively faithful image to the original photo image. This plugin make new files "map_28_imp" and "map_28_merged_imp."
2 abst-map-setcan create the image which has brush strokes that are grown by around strong texture. In the result, the work should be with many strong brush strokes and face or something should be warped badly.
This plugin changes the file"map_28_abst" and create a new file "map_28_merged_abst."

"2 Compensation of L*" =10,
"3 Ranges of randomness of a* and b*"=7,
"4 Threshold 1" =30,
"5 Threshold 2"=30 and
"6 Number of Segments" =9.

This work was created in a condition that other parameters are left default value. However, we explain Other parameters
If "2 Compensation of L*" takes large value, painting like compensation of brightness becomes large. Then, if you need fidelity, this one need to be 0 or small value.
The larger value of "3 Ranges of randomness of a*b*" is, the larger variance of color is.
If this value would be set appropriately, you could get color scheme like impressionist's.
After processing, new window open but you need not mind it and just close it.

So far the comment lines of the green image become

Where 02 of plug_in_gk_analyse-02 means "2 abst-map-set".

At this point, you'd better save this green image by lossless compression file format like tiff file format. Tiff file save not only image but comment lines. With saving the image, you can have break and continue it later by loading the tiff-file.

Plugins for expressions (recorded in the history)

From now on, plugins are executed for image expression by using of analyzed data.

Let's click the right button on this green image to get the pulldown menu. And, select "

"1 Brush Touch Type" = 3Realistic

Selection of "1 Brush Touch Type" creates many types of brush stroke. The most usual one is 3 Realistic.
Let us explain other parameters of this plugin.

"2 Fraction" = 4
"3 Number of Segments" = 80
"4 Image Scale" = 1
"5 Use Map Filters" = 0
"6 Number of Sketch Line" = 92
"7 Isolated Segments" = 0
"8 Abst3" = 72
"9 Abst 4" = 0
"10 Scale" = 1
"11 Map Set" = 2

"4 Image Scale"means scale of image. You can enlarge size of an original photo image without any jaggy or any other defects. If 1ScaleUp as "10 Scale"is selected, "4 Image Scale" getting large makes image large. You have to put same value as "2 Image Scale" in 5GKSubstColor.
"6 Number of Sketch Line" getting smaller increases the sketch lines. If this value = 0, all brush strokes become line. In the art work"Shinjuku", this value was 92.

The value of "11 MapSet" is according to the sort of map-sets.
0 -> map-set
1 -> imp-map-set
2 -> abst-map-set,

In the art work "Shinjuku", because2abst-map-set as "1 Map Set" was selected at previous plugin, it is natural to select 2 as "11 Map Set".

After the processing, a green reconstructed image appear.

The comment line are

where 03 of plug_in_gk_reconst-03 means 3 Realistic.

On the newly created green image, click the right button to get a pulldown menu.
Then, get a chose"Synergistic->1->5GKSubstColor"

"1 Type of Coloring" = 16 Sketch.
To express humidity and hotness in the summer into the artwork "Shinjuku", special brush coloring 16 Sketch as "1 Type of Coloring" was selected .

"2 Image Scale" = 1,
"3 Use Map Filters"= 1 USE ,
"4 Number of Dark brush strokes" = 95 and
"5 Isolated brush strokes" = 0.
It increases dark brush strokes for "4 Number of Dark brush strokes" going small value. This value must less than "6Number of Sketch Line" in [4GKReconstImage] because it make you feel strange that brush strokes except thin sketch lines are colored by black.
"4 Number of Dark brush strokes" larger than "6 Number of Sketch Line" in [4GKReconstImage] creates sketch lines of not dark. We selected 95 as "4 Number of Dark brush strokes."

"6 Abst3" = 1
"7 Abst4" = 50.
When 16 Sketch as "1 Type of Coloring" is choose, "6 Abst3"=0 or 1 is selected. Choosing1 as "6 Abst3"make "7 Abst4" the parameter modulating solidity of brush strokes.

In this art work "Shinjyuku", we selected 50 as "7 Abst4", because we want to stand out solidity of brush strokes to make unusual feeling.

After finish of this processing the pink image appears.

The comment line of this image are

where 16 of plug_in_gk_subst-16 means 16 skech.

The discription of comment line is enough to create the work "Shinjuku". You can create your own work by referring to this description and changing some parameters a little.

After-processings (not recorded in the history)
On this pink image, click the right button to get a pulldown menu.
Then, get a chose "Synergistic->1->1GkDirec ".

Because this image need transformation from L*a*b* to RGB, you select "L*a*b* to RGB" and click "OK". Then, you get the image below.

Thus the image above is created. This image usually need adjustments of color or something according to your taste. Such left processes that this image needs can be executed by GIMP.
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