Much Thanks Luc !
2011/4/22 luc julien <[email protected]>
> Find below a gizmo I've built with some matrix that I've found over the
> years.
>
> A good start for learning more about it.
>
> Luc
>
>
>
> Group {
> name Matrix_selector
> label "\[value matrix]"
> selected true
> xpos 16708
> ypos 22754
> addUserKnob {20 User l Matrix}
> addUserKnob {4 matrix M {"Horizontal Edges" "Vertical Edges" "Left
> Diagonal Edges" "Right Diagonal Edges" "Right Diagonal Edges" North West
> East South Northeast "Basic Smooth" "Basic Smooth 5x5" High-Pass "High-Pass
> 5x5" Laplacian "Laplacian 5x5"}}
> }
> Input {
> inputs 0
> name Input1
> xpos 400
> ypos -179
> }
> set N148564d0 [stack 0]
> Matrix {
> matrix {
> {1 1 1 1 1}
> {1 1 1 1 1}
> {1 1 24 1 1}
> {1 1 1 1 1}
> {1 1 1 1 1}
> }
> normalize true
> name Matrix16
> label "Laplacian 5x5"
> xpos 1280
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {0 -1 0}
> {-1 4 -1}
> {0 -1 0}
> }
> name Matrix15
> label Laplacian
> xpos 1170
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {0 -1 -1 -1 0}
> {-1 2 -4 2 -1}
> {-1 -4 13 -4 -1}
> {-1 2 -4 2 -1}
> {0 -1 -1 -1 0}
> }
> name Matrix14
> label "High-Pass 5x5"
> xpos 1060
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {-1 -1 -1}
> {-1 9 -1}
> {-1 -1 -1}
> }
> name Matrix13
> label High-Pass
> xpos 950
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {1 1 1 1 1}
> {1 4 4 4 1}
> {1 4 12 4 1}
> {1 4 4 4 1}
> {1 1 1 1 1}
> }
> name Matrix12
> label "Basic Smooth 5x5"
> xpos 840
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {1 2 1}
> {2 4 2}
> {1 2 1}
> }
> normalize true
> name Matrix11
> label "Basic Smooth"
> xpos 730
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {0 -1 -2}
> {1 0 -1}
> {2 1 0}
> }
> name Matrix10
> label Northeast
> xpos 620
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
>
> {1 2 1}
> {0 0 0}
> {-1 -2 -1}
> }
> name Matrix9
> label South
> xpos 510
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
>
> {1 0 -1}
> {2 0 -2}
> {1 0 -1}
> }
> name Matrix20
> label East
> xpos 400
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {-1 0 1}
>
> {-2 0 2}
> {-1 0 1}
> }
> name Matrix7
> label West
> xpos 290
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {-1 -2 -1}
>
> {0 0 0}
> {1 2 1}
> }
> name Matrix6
> label North
> xpos 180
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {-1 -1 2}
> {-1 2 -1}
> {2 -1 -1}
> }
> name Matrix5
> label "Right Diagonal Edges"
> xpos 70
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {-1 -1 2}
> {-1 2 -1}
> {2 -1 -1}
> }
> name Matrix8
> label "Right Diagonal Edges"
> xpos -40
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {2 -1 -1}
> {-1 2 -1}
> {-1 -1 2}
> }
> name Matrix17
> label "Left Diagonal Edges"
> xpos -150
> ypos 71
> }
> push $N148564d0
> Matrix {
> matrix {
> {-1 2 -1}
> {-1 2 -1}
> {-1 2 -1}
> }
> name Matrix18
> label "Vertical Edges"
> xpos -260
> ypos 71
> }
> Dot {
> name Dot1
> xpos -232
> ypos 156
> }
> push $N148564d0
> Matrix {
> matrix {
> {-1 -1 -1}
> {2 2 2}
> {-1 -1 -1}
> }
> name Matrix19
> label "Horizontal Edges"
> xpos -370
> ypos 71
> }
> Dot {
> name Dot2
> xpos -342
> ypos 180
> }
> Switch {
> inputs 16
> which {{matrix}}
> name Switch1
> xpos 400
> ypos 277
> }
> Output {
> name Output1
> xpos 400
> ypos 349
> }
> Viewer {
> frame 1
> input_process false
> name Viewer1
> xpos 400
> ypos 469
> }
> end_group
>
>
> <http://www.lucjulien.com/>
> <http://www.lucjulien.com/> <http://www.lucjulien.com/>
>
> <http://www.lucjulien.com>
>
>
>
> ------------------------------
> From: [email protected]
> Subject: Re: [Nuke-users] Select horizontal and vertical lines
> Date: Fri, 22 Apr 2011 09:14:50 -0700
> To: [email protected]
>
>
> Someone who understands the voodoo of the Matrix node! Awesome!
>
> I don't suppose you know how to do an edge detect at an arbitrary angle,
> instead of either horizontally or vertically?
>
> On Apr 22, 2011, at 7:58 AM, Hugh Macdonald wrote:
>
> You can create your own vertical/horizontal edge detect by using the Matrix
> node to create a basic Sobel filter.
>
> Create a Matrix node, and set it to be 3x3.
>
> For a vertical edge detect, enter the following values:
>
> [ -1 0 1 ]
> [ -2 0 2 ]
> [ -1 0 1 ]
>
> For a horizontal edge detect, enter these values:
>
> [ -1 -2 -1 ]
> [ 0 0 0 ]
> [ 1 2 1 ]
>
> Then follow this with an Merge node set to Difference. Make sure the B
> input is plugged into the Matrix node, and leave the A input disconnected.
> This will make the negative values that came out of the Matrix node
> positive.
>
> Hugh Macdonald
> *n**vizible** – VISUAL EFFECTS
> *
> [email protected]
> +44(0) 207 659 2038
> +44(0) 7773 764 708
>
> www.nvizible.com
>
> On 21 Apr 2011, at 14:12, Renato Carone wrote:
>
> Hi,
>
> If you use a Erode node after your Edge Detect, you can select vertical or
> horizontal lines.
>
> Cheers,
> Renato carone
>
> On 21/04/2011, at 06:44, Spider <[email protected]> wrote:
>
> Hi everyone,
>
> I'd like to kow if there is a way to select only vertical and/or horizontal
> lines after an edge detect node, cause i'd like to apply a node only for
> these selection.
> Any hint ?
>
> Thanks for your help.
>
> Spider
>
>
> --
> *Luddnel Spider Magne **|** Director - Lead Motion Compositor*
> 555Lab – Alchemy between you and us
> 24 rue du Pré St-Gervais 93500 Pantin
> Office (+33)148 453 555 | Fax (+33)171 864 387
> Mobile (+33)699 434 555 | 555lab.com <http://www.555lab.com/>
>
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>
--
*Luddnel Spider Magne **|** Director - Lead Motion Compositor*
555Lab – Alchemy between you and us
24 rue du Pré St-Gervais 93500 Pantin
Office (+33)148 453 555 | Fax (+33)171 864 387
Mobile (+33)699 434 555 | 555lab.com <http://www.555lab.com/>
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