question about over operator for images with no alpha/matte channel

Hi,

I’m new to Nuke but pretty familiar with the capabilities of the program.

I’m trying to learn the merge operations, starting with the Merge(over).

I understand that this operator expects a premultiplied image that is, correct me if I’m wrong, an image with an alpha channel integrated with the file.

Image A 400×400 pixels a picture of a happy face
Image B 400×400 pixels the Nuke Checkerboard

So OK, Image A has NO transparency, you can’t see through it.
I put a transform and translated Image A out of the frame ( I moved it over) and with the merge you can now see the checkerboard under it.

What I want to do is add an alpha channel to Image A to make it a premultiplied image.

Could anyone help me figure this out?

Notice how the checkerboard underneath shows through a little but with the transform it doesn’t show through the image itself, only around the sides where it was moved. Could anyone explain why that is?

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Funny clip! Funny clip!

FXguide TV #48 – Nuke Demo on Mummy

Hello…

I wanted to share a video that features a demo about 3D / UV / Facial Expression stuff that we used here at DD on the Mummy: Tomb of the Dragon Emperor in NUKE5. Interview was taken while I was back home at IBC’08 in Amsterdam. Its the same, but more fleshed out, demo that I did at the Nuke User Group Meeting at Siggraph. Its the second part in the vid.

Hopefully you guys enjoy!

http://media.fxguide.com/fxguidetv/fxguidetv-ep048.m4v

Greets,
Justin

My reel from 2008

Hi…I am posting my recent demo reel.. i hope to rcv comments n suggestions.
thank you.

http://student.vfs.com/~3d71santhoshi/demo-reel.html thats the link to my reel.
http://www.youtube.com/watch?v=UaFxvHLjx44 : youtube link.

Digital Dimension’s Spirit reel

Digital Dimension’s break-down reel for The Spirit.

read node workflow

I’ve noticed that the read node in Nuke doesn’t give much info regarding what’s going on with the plate being read in. Maybe there is more info there and I’m just missing it but it appears that there is no hint as to whether a plate is pre-multiplied or divided (unpremult) coming in.. I mean, I suppose you could look at the matte-edge and look for aliasing but this seems combersome.

Would it be safe to assume that a good workflow would be to go READ -> REFORMAT -> UNPREMULT -> COLOR CORRECT -> PREMULT and so on…?

Thanks in advance

Last of ’08 . . . 3D demo reel

Even though it’s a week into 2009, here’s my best (finished!) work from 2008 . . . in 3D that is.

http://www.vfxjake.com/3d_artist_reel.html

Missing fingers in Valkyrie

Millimeter’s step by step article on Imageworks’ missing fingers effects for Valkyrie.

Smith & Foulkes: Stop, Look & Listen

smith-foulkes-look

This one nearly slipped by the radar. “The Boy Who Didnʼt Stop, Look & Listen” is the first installment in a three-part series for the Department for Transport THINK! Child Road Safety campaign in the UK.

Leo Burnett set up the series for success by penning “Tales from the Road,” an eerie set of nursery rhymes that show kids what might happen when basic safety rules are ignored.

In the hands of Nexus Productions’ Smith & Foulkes, the stories become painterly visions that are one part children’s book illustration and one part nightmare. They walk a fine line between quiet and creepy, crawling under your skin in the process.

Says Smith & Foulkes, “We wanted these commercials to act as a pause in a child’s TV viewing, holding the gaze of the immobile injured characters almost painfully long as a contrast to the hi-energy multi-coloured frenzy of your average childrenʼs programming break.”

Pay attention to the little details, like the quivering crutch as the boy reaches for his ball or the subtle dimensionality of the vignetting during camera moves. It’s all beautifully realized down to the finest detail in typical Smith & Foulkes fashion.

Stay tuned for parts two and three of the series. They’re worth the wait.


Client: Department for Transport
Title: ‘The Boy who didn’t Stop, Look & Listen’
Length: 1 x 40″
Production Company: Nexus Productions
Director: Smith & Foulkes
Executive Producers: Chris O’Reilly and Charlotte Bavasso
Head of Production: Julia Parfitt
Producer: Melody Sylvester
Production Assistant: Denise Abraham
Character Designer: Mustashrik Mahbub
Project Lead: Mark Davies

Further credits from Leo Burnett:
Executive Creative Director: Jonathan Burley
Creative Directors: Guy Moore and Tony Malcolm
Copywriter: Christopher Birch
Art director: Caroline Rawlings
Planner (creative agency): Nick Docherty
Media agency: Carat
Planner (media agency): Laura Braithwaite
Editor N/A – animation
Audio post-production: Anthony Moore @ Factory
Exposure: National television

Posted on Motionographer

Smith & Foulkes: Stop, Look & Listen

rendering out from 3d viewport camera…

Does anyone know a way to render out what the camera is seeing in the 3d viewport? I want to show some composites I’ve done for my showreel, with all the layers in 3d space. But I haven’t figured out a way to output it.