Engraving Lines - an error occurred

[Kevin]

Why are we ignoring the fact that when entered manually in the console plug_in_gauss_rle2 generated an error.

Can you do Filters>>Blur>>Gaussian Blur without error?

Can you do Filters>>Generic>>GEGL Graph and try gaussian-blur?
   

[Krikor]

(12-17-2020, 06:10 PM)Kevin Wrote: Why are we ignoring the fact that when entered manually in the console plug_in_gauss_rle2 generated an error.

Can you do Filters>>Blur>>Gaussian Blur without error?

Can you do Filters>>Generic>>GEGL Graph and try gaussian-blur?

Kelvin,

Although I never used this option before - GEGL graph, and I was scared by the huge text that was on the screen (see below), which I didn't try to understand for the moment.

     

Code:

# uncomment a set of lines below by removing the
# leading to test and modify an example, use
# use ctrl+a before typing to select all, if you
# want a blank slate.
#
id=in # name a reference to the input buffer 'in'


# adaptive threshold:
#
#threshold aux=[ ref=in gaussian-blur  std-dev-x=0.2rel std-dev-y=0.2rel ]

# local white balance and contrast stretching
#
#divide aux=[  ref=in  median-blur radius=.25rel percentile=100  gaussian-blur std-dev-x=.5rel std-dev-y=.5rel ]

# median sharpen (unsharp-mask with median-blur):
#
#add aux=[  ref=in subtract aux=[ ref=in  median-blur radius=5  ] ]

# styled text overlay
#
#over aux=[ text wrap=1.0rel  color=rgb(0.1,0.1,.3) size=.1rel string="ipsum sic amet deliriarium mic sel adendum. Mic fubar bax qux facilium dhat." dropshadow radius=.01rel  grow-radius=0.0065rel color=white x=0 y=0 border-align x=0.5 y=0.33  ] # try x=1 y=1


# thumbs with misc filters along bottom of image:
#
#over aux=[
#  ref=in scale-ratio x=0.20 y=0.20 newsprint period=0.01rel period2=0.01rel period3=0.01rel period4=0.01rel color-model=cmyk aa-samples=64 pattern=pssquare pattern2=pssquare pattern3=pssquare pattern4=pssquare
#  pack gap=0.05rel aux=[ ref=in scale-ratio x=0.20 y=0.20 newsprint period=0.01rel period2=0.01rel period3=0.01rel period4=00.01rel color-model=rgb aa-samples=64  ]
#  pack gap=0.05rel aux=[ ref=in scale-ratio x=0.20 y=0.20 id=scaled snn-mean snn-mean crop aux=[ ref=scaled ] ]
#  pack gap=0.05rel aux=[ ref=in scale-ratio x=0.20 y=0.20 mosaic tile-size=0.03rel ]
#  border-align x=0.5 y=0.9
#]

# All the examples can be expanded to be on
# multiple lines, this graph description
# language is not whitespace sensitive, the
# rel suffix is relative to image height

Without adjusting any value, just using the gaussian-blur command, the blur was applied smoothly to the selected area (1/4 of the image at the top right).
And the Gaussian blur in Filters - Blur - Gaussian Blur I use it directly and I never had any problems with it.
   
Thank you for your help!

[Ofnuts]

In the sequence of instruction in post #4, what happens if your replace

Code:

pdb.plug_in_gauss_rle2(image,layer,0.,0.)

by

Code:

pdb.plug_in_gauss_rle2(image,layer,1.,1.)

In other words, if you attempt to have some blur? What happens if you add some blur in the OEL dialog, for instance a value of 2.0?

[Krikor]

No messages this time. (Is that a good sign?)
   

---

(12-17-2020, 10:31 PM)Ofnuts Wrote: In other words, if you attempt to have some blur? What happens if you add some blur in the OEL dialog, for instance a value of 2.0?

Sorry, I don't know what OEL dialog would be.  
I tried searching on google but found no answers.

What I did, and I don't know if it makes any sense, was to type the text:
gaussian-blur std-dev-x = 2rel std-dev-y = 2rel inside the GEGL graph window.

This worked, as shown in the image below that shows the preview of the applied command.
   

---

With a value of 2, it looked like a 200 blur, so I tried it with .02. Perhaps there is some logic to this.    

[Ofnuts]

(12-17-2020, 11:45 PM)Krikor Wrote: No messages this time. (Is that a good sign?)

---

(12-17-2020, 10:31 PM)Ofnuts Wrote: In other words, if you attempt to have some blur? What happens if you add some blur in the OEL dialog, for instance a value of 2.0?

Sorry, I don't know what OEL dialog would be.  
I tried searching on google but found no answers.

What I did, and I don't know if it makes any sense, was to type the text:
gaussian-blur std-dev-x = 2rel std-dev-y = 2rel inside the GEGL graph window.

This worked, as shown in the image below that shows the preview of the applied command.

---

With a value of 2, it looked like a 200 blur, so I tried it with .02. Perhaps there is some logic to this.

OEL: ofn-engraving-lines .Anyway, given your first try , it seems that the gaussian plug-in no longer likes to be called with a 0 value, so that's just a  quick fix. Note that you get better results with a blur anyway, the actual definition of the final image is the distance between two paths.

New version uploaded to SourceForge

[Krikor]

(12-18-2020, 08:22 AM)Ofnuts Wrote: OEL: ofn-engraving-lines .

   

(12-18-2020, 08:22 AM)Ofnuts Wrote: Anyway, given your first try , it seems that the gaussian plug-in no longer likes to be called with a 0 value, so that's just a  quick fix. Note that you get better results with a blur anyway, the actual definition of the final image is the distance between two paths.

New version uploaded to SourceForge

I thought this was an impossible mission ... 
But with the update the plugin is running without errors! 
For now only a few tests with the Line Thickness option, still nothing with the Dashes option, but I am confident this time.

Now it's time to play around with the new plugin!
   

To all who tried to solve this problem, thank you very much for your help!