good day - dear froemds.
for me its helpful if i write things down by hand or step by step, things i have to do.
well i have made up my mind and tested some steps in doing so: i hope that this might be helpful for others too.
first of all: i take a screenshot of a meaningful frame from the image.
then i open the image in GIMP (File > Open).
note: (Optional): If the image is colored, convert it to grayscale (Image > Mode > Grayscale). This simplifies edge detection.
in the next step i think its important to extract the dominant edge
therefore i need to go to the menu: Filters > Edge-Detect > Edge.
BTW: hmm - there are other options like "Sobel" or "Laplace", but "Edge" usually gives a clean result for network structures.
Hmmm - for the fine-tuning: If the line is too weak or too strong, we need to adjust it using Colors > Curves or Colors > Brightness/Contrast. The goal is a crisp black-and-white line network.
Result: wou now have a base layer (let's call it "Base"), which ideally looks like a white surface with a black web of lines on it.
Fig. 1: our Base layer with the extracted line network.
in the next step i think it is important to take care for the "tracing Dots and Connecting Them
and here i have the important part - which is allways a challenge for me . . the Working with Layers and Paths
i think its important - to open a second layer - that is imporant: for the creative par that starts now: On a second layer, i select specific nodes and connect them. The Paths Tool is perfect for this.
Step 3: Create a New Drawing Layer
now i create a new transparent layer above the Base layer. well i name it "My_Network".
Important: i need to mak sure this new layer is selected in the Layers dialog.
see below - how it is menat:
Fig. 2: The layer structure. The drawing layer sits on top of the base.*
for me its helpful if i write things down by hand or step by step, things i have to do.
well i have made up my mind and tested some steps in doing so: i hope that this might be helpful for others too.
first of all: i take a screenshot of a meaningful frame from the image.
then i open the image in GIMP (File > Open).
note: (Optional): If the image is colored, convert it to grayscale (Image > Mode > Grayscale). This simplifies edge detection.
in the next step i think its important to extract the dominant edge
therefore i need to go to the menu: Filters > Edge-Detect > Edge.
BTW: hmm - there are other options like "Sobel" or "Laplace", but "Edge" usually gives a clean result for network structures.
Hmmm - for the fine-tuning: If the line is too weak or too strong, we need to adjust it using Colors > Curves or Colors > Brightness/Contrast. The goal is a crisp black-and-white line network.
Result: wou now have a base layer (let's call it "Base"), which ideally looks like a white surface with a black web of lines on it.
Quote:+---------------------------------------+
| Base Layer |
| .-----o .-----o |
| | \ / | |
| o o--o o |
| / \ / \ / \ |
| o o---o o---o |
+---------------------------------------+
Fig. 1: our Base layer with the extracted line network.
in the next step i think it is important to take care for the "tracing Dots and Connecting Them
and here i have the important part - which is allways a challenge for me . . the Working with Layers and Paths
i think its important - to open a second layer - that is imporant: for the creative par that starts now: On a second layer, i select specific nodes and connect them. The Paths Tool is perfect for this.
Step 3: Create a New Drawing Layer
now i create a new transparent layer above the Base layer. well i name it "My_Network".
Important: i need to mak sure this new layer is selected in the Layers dialog.
see below - how it is menat:
Quote:+---------------------------------------+
| My_Network (Transparent) | <-- all my drawing goes here
+---------------------------------------+
| Base |
| .-----o .-----o |
| | \ / | |
| o o--o o |
+---------------------------------------+
Fig. 2: The layer structure. The drawing layer sits on top of the base.*