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 > nvizible – 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 >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected] >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> _______________________________________________ >> Nuke-users mailing list >> [email protected] >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > _______________________________________________ > Nuke-users mailing list > [email protected] > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
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