CompStart

Pro Lecciones Cursos Elementos Software

Extrusión de borde

ToolSets / Filter

Filter

2026-09-07

ToolSets/filter/edgeExtrude.nk

filtrar

borde

difuminar

mascarilla

utilidad

registro

View on GitHub

Expande el color de los bordes hacia afuera con una pila de desenfoque multiescala, erosión de máscara opcional y manejo de espacio logarítmico para composiciones de Nuke.

La función Edge Extrude expande los píxeles de los bordes hacia afuera mediante una cascada de desenfoques de caja de tamaño creciente, cada uno con máscara alfa aplicada y fusionado bajo el original. El resultado rellena o extiende el color del borde sin un simple halo de desenfoque único.

Envía la imagen a la entrada principal. Opcionalmente, conecta una máscara y elige su canal; las opciones de erosión e inversión controlan cuánto se ajusta la máscara antes de que se ejecute la extrusión. El tamaño determina la pila de desenfoque; la calidad se comparte entre todos los desenfoques.

Cuando Log está activado, la placa se convierte a Cineon para la extrusión y viceversa, lo que mantiene el empuje de los bordes más estable en placas Log. Úselo para engrosar bordes, cubrir franjas o reconstruir detalles de borde faltantes antes de fusionar y crear claves.

Script code

set cut_paste_input [stack 0]
version 9.0 v7
push 0
push $cut_paste_input
Group {
 inputs 2
 name edgeExtrude
 tile_color 0x421010ff
 selected true
 xpos 480
 ypos 114
 addUserKnob {20 User l edgeExtrude}
 addUserKnob {41 from0 l "mask channel" T Copy1.from0}
 addUserKnob {7 erodeMask l "erode mask" R 0 100}
 erodeMask 10
 addUserKnob {6 invertMask -STARTLINE}
 addUserKnob {41 size T master.size}
 addUserKnob {52 group T "import nuke\nknobChanged \"\\n\\ng = nuke.thisNode()\\nk = nuke.thisKnob()\\n\\nif k.name() in \\\[\\\"frames\\\",\\\"method\\\"]:\\n    \\n    i = nuke.toNode(\\\"img\\\")\\n    i2 = nuke.toNode(\\\"mask\\\")\\n    o = nuke.toNode(\\\"Output1\\\")\\n    c = nuke.toNode(\\\"Copy1\\\")\\n\\n    if k.name() == \\\"frames\\\":\\n    \\n        defaultNodes = \\\[i,i2,o,c]\\n        for n in nuke.allNodes():\\n           if n not in defaultNodes:\\n               nuke.delete(n)\\n        \\n        fvalue = g\\\['frames'].value()\\n        step = 1\\n        if fvalue < 0:\\n           step = -1\\n          \\n        for f in range(0,int(fvalue)+step,step):\\n           t = nuke.nodes.TimeOffset()\\n           t\\\['time_offset'].setValue(-f)\\n           t.setInput(0,i)\\n        \\n           if f == 0 :\\n               lastnode = t\\n        \\n           else :\\n               slice = nuke.nodes.Grade()\\n               slice\\\['channels'].setValue(\\\"alpha\\\")\\n               slice\\\['blackpoint'].setValue((1/(fvalue+1))*abs(f))\\n               slice\\\['whitepoint'].setValue((1/(fvalue+1))*(abs(f)+1))\\n               slice.setInput(0,c)\\n               exp = nuke.nodes.Expression()\\n               if g\\\['method'].value() == \\\"average\\\":\\n                   exp\\\['expr3'].setValue('a>1?1:a')\\n               else:\\n                   exp\\\['expr3'].setValue('a>0?1:0')\\n               exp.setInput(0,slice)\\n               km = nuke.nodes.Keymix()\\n               km.setInput(1,t)\\n               km.setInput(0,lastnode)\\n               km.setInput(2,exp)\\n               lastnode = km\\n        \\n        sw = nuke.nodes.Switch()\\n        sw.setInput(0,i)\\n        sw.setInput(1,lastnode)\\n        sw\\\['which'].setExpression('parent.maskChannel!=0')\\n        o.setInput(0,sw)\\n            \\n        for n in nuke.allNodes():\\n           nuke.autoplace(n)\\n\\n    elif k.name() == \\\"method\\\":\\n\\n        for e in nuke.allNodes('Expression'):\\n               if g\\\['method'].value() == \\\"average\\\":\\n                   e\\\['expr3'].setValue('a>1?1:a')\\n               else:\\n                   e\\\['expr3'].setValue('a>0?1:0')\\n\\n\"" +STARTLINE}
 addUserKnob {41 quality -STARTLINE T master.quality}
 addUserKnob {6 log -STARTLINE}
 log true
 addUserKnob {26 ""}
 addUserKnob {26 lbl l "" +STARTLINE T "Edge Extrude v1.2"}
 addUserKnob {22 btn l DerekVFX.ca T "nuke.tcl('start', 'https://derekvfx.ca')" +STARTLINE}
}
 Input {
  inputs 0
  name mask
  xpos -137
  ypos -799
  number 1
 }
set Na4475400 [stack 0]
push $Na4475400
 Copy {
  inputs 2
  from0 rgba.alpha
  to0 rgba.alpha
  name Copy1
  xpos -137
  ypos -751
  disable {{"\[exists parent.input1] == 0"}}
 }
set N492aa800 [stack 0]
push $N492aa800
 Dot {
  name Dot2
  xpos -208
  ypos -741
 }
 Invert {
  channels alpha
  name Invert1
  xpos -242
  ypos -696
 }
 Dot {
  name Dot4
  xpos -208
  ypos -623
 }
 Switch {
  inputs 2
  which {{invertMask}}
  name Switch1
  xpos -137
  ypos -627
 }
 Dilate {
  channels alpha
  size {{abs(erodeMask)*-1+-1}}
  name Dilate1
  xpos -137
  ypos -575
 }
 Input {
  inputs 0
  name Input
  xpos 27
  ypos -729
 }
 Colorspace {
  colorspace_out Cineon
  name Colorspace1
  xpos 27
  ypos -626
  disable {{"parent.log != 1"}}
 }
 Merge2 {
  inputs 2
  operation mask
  bbox B
  name Merge1
  xpos 27
  ypos -501
 }
 Dot {
  name Dot3
  xpos 61
  ypos -428
 }
set Nc32cdc00 [stack 0]
 Dot {
  name Dot1
  xpos 370
  ypos -428
 }
 Blur {
  channels rgba
  size {{parent.master.size/32}}
  filter box
  quality {{parent.master.quality}}
  name Blur5
  label "\[value size] px"
  xpos 336
  ypos -380
 }
set Nb0597800 [stack 0]
 Unpremult {
  name Unpremult5
  xpos 336
  ypos -342
 }
 Expression {
  expr3 "a != 0"
  name Expression1
  xpos 336
  ypos -316
 }
 Blur {
  channels rgba
  size {{parent.master.size/16}}
  filter box
  quality {{parent.master.quality}}
  name Blur13
  label "\[value size] px"
  xpos 343
  ypos -293
 }
set Nb0596000 [stack 0]
 Unpremult {
  name Unpremult13
  xpos 336
  ypos -255
 }
 Expression {
  expr3 "a != 0"
  name Expression13
  xpos 336
  ypos -229
 }
 Blur {
  channels rgba
  size {{parent.master.size/8}}
  filter box
  quality {{parent.master.quality}}
  name Blur15
  label "\[value size] px"
  xpos 336
  ypos -203
 }
set Nc1a1f400 [stack 0]
 Unpremult {
  name Unpremult15
  xpos 336
  ypos -165
 }
 Expression {
  expr3 "a != 0"
  name Expression15
  xpos 336
  ypos -139
 }
 Blur {
  channels rgba
  size {{parent.master.size/4}}
  quality {{parent.master.quality}}
  name Blur16
  label "\[value size] px"
  xpos 336
  ypos -113
 }
set Nc1a1f000 [stack 0]
 Unpremult {
  name Unpremult16
  xpos 336
  ypos -75
 }
 Expression {
  expr3 "a != 0"
  name Expression16
  xpos 336
  ypos -49
 }
 Blur {
  channels rgba
  size {{parent.master.size/2}}
  quality {{parent.master.quality}}
  name Blur17
  label "\[value size] px"
  xpos 336
  ypos -19
 }
set Na4475000 [stack 0]
 Unpremult {
  name Unpremult17
  xpos 336
  ypos 19
 }
 Expression {
  expr3 "a != 0"
  name Expression17
  xpos 336
  ypos 45
 }
 Blur {
  channels rgba
  size {{parent.master.size}}
  quality {{parent.master.quality}}
  name Blur18
  label "\[value size] px"
  xpos 336
  ypos 71
 }
set Na4475c00 [stack 0]
 Unpremult {
  name Unpremult18
  xpos 336
  ypos 116
 }
 Expression {
  expr3 "a != 0"
  name Expression18
  xpos 336
  ypos 131
 }
 Blur {
  channels rgba
  size {{parent.master.size*2}}
  quality {{parent.master.quality}}
  name Blur19
  label "\[value size] px"
  xpos 336
  ypos 157
 }
 Unpremult {
  name Unpremult6
  xpos 336
  ypos 195
 }
 Expression {
  expr3 "a != 0"
  name Expression6
  xpos 336
  ypos 221
 }
push $Na4475c00
push $Na4475000
push $Nc1a1f000
push $Nc1a1f400
push $Nb0596000
push 0
push $Nb0597800
push $Nc32cdc00
 Merge2 {
  inputs 8+1
  operation under
  bbox B
  invert_mask true
  name Merge4
  xpos 27
  ypos 221
 }
 Colorspace {
  colorspace_in Cineon
  name Colorspace2
  xpos 27
  ypos 293
  disable {{"parent.log != 1"}}
 }
 Output {
  name Output1
  xpos 27
  ypos 356
 }
push $Nc32cdc00
 Blur {
  channels rgba
  size 20
  name master
  label "\[value size] px"
  xpos 154
  ypos -384
  hide_input true
 }
push $Nb0597800
 Viewer {
  frame_range 100-100
  colour_sample_bbox {-0.15625 0.2568359375 -0.1552734375 0.2578125}
  name Viewer1
  xpos 1872
  ypos 1458
 }
end_group