G'MIC fun with afre

gmic
fun

#1

Edit #1: I removed Neon from the title since I intend to add fun new effects that I discover along the way. Feel free to share and discuss interesting stuff you have come across that don’t fit into the one-liner challenge thread (see link in original post below).

Edit #2: This is intended for new effects that you have made either from scratch or on top of other filters. Doesn’t have to be unique; just fun.


Error with updated Neon command inspired me to play around with the idea of neon lights. I started from scratch and came up with something interesting. It isn’t a One-liner challenge qualifier, so I decided to share the results.

neon_flower

neon_barbara

neon_eagle

zombie lisa


G'MIC exercises
(dumb) #2

This is why I (try to) make filters. I’d love to use the code to add some sort of glow and boost glow to it.


#3

I made this thread broader by replacing the word Neon with G’MIC. Feel free to share and discuss random effects that you have discovered. :slight_smile:

apples

duck


[PlayRaw] Mairi Troisieme
#4

I’m a fan or Dream Smoothing.


#5

I refined the purpose of the thread a bit more.


#6

I have yet to try it. Which settings do you typically use?


#7

The default setting usually work well with large images. It can take some time to process however. Here’s an image of my bike, I used 2 iterations setting on this one.


#8

More fun: this time a “blueprint” effect.

blueprint


[Play Raw] You can run but you can't hide
#9

I discovered that the effect in post #3 has an interesting application. It helped highlight spots that needed healing when I did this PlayRaw entry.


#10

Here is another fun effect. Its temp name is “ludic”: not quite lucid. :slight_smile: (I used something similar for my second alt on [PlayRaw] Landsat 8 image of Lake Elton

ludic_flower


New PhotoFlow batch processing options for setting image export parameters
(dumb) #11

Reminds me of GIMP’s alien map filter. Do you have the script code?


#12

Sure; it is not in #@gui format yet. It is different from the alien map filter. Since it piqued your interest, I might consider adding it as a filter. I have to figure out GitHub and GitLab someday… :stuck_out_tongue:

afre_ludic: skip ${1=14.5},${2=0},${3=0}
  if {$1<1||$1>15}
    e[] "\n  NB: Argument '$"1"' is not between 1 and 15.\n" v - q fi
  repeat $! l[$>]
    if !$2 b 1,1,1 fi
    n 0,{2^16-1} & {2^$1-1}
    if $2 b 1,1,1 fi
    n 0,255
    if $3 negate n 0,255 fi
  endl done

(dumb) #13

I see a main parameter, a skip parameter and a negation parameter. I’ll see what I can do.


#14

I have a bunch of techniques in my head but I usually forget about them. This is one of them.

1. skip is for cli and is a list of the default parameters.
2. The key line is n 0,{2^16-1} & {2^$1-1}. This filter is basically an application of bit planing.


(dumb) #15

Bit-planing is something I’ve been wanting to achieve for a while, as it happens. I gave up on it but this’ll help a lot.


#16

Glad I could help. I like simple concepts and implementations. One thing to note is that the default parameter is set to 14.5, which does not represent a bit plane per se. You would need positive integers; i.e., 1,2,3,... up to the max plane.


(dumb) #17

I’ve quickly made a bit plane decomposer for 8-bit RGB images:

to_rgb
repeat 8
[0]
l[-1] & {2^$>} endl
done
rm[0]
#n 0,255

Making a reverse command shouldn’t be difficult (without that extra commented n it’s just a case of blend add but it might require some kind of idiotproofing to cram values into a plane before recomposition.


#18

The reverse command is +. :slight_smile:


(dumb) #19

Thanks for the help, here’s what I have now:

##decompose
to_rgb
repeat 8
[0]
&[-1] {2^$>}
done
rm[0]
#n 0,255

##recompose
#repeat 8
#n[{$>}] 0,{2^$>}
#done
+

(G'MIC staff) #20
binary_planes :
  sp lena

  # Decompose (as a 8-slices volume).
  100%,100%,8,100%,"(i(#-1,x,y,0,c)>>z)&1"

  # Recompose.
  100%,100%,1,100%,"a=0;for(k=0,k<8,++k,a+=i(#-1,x,y,k)*2^k)"