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Introduction to nuke
From the node graph ( right click on viewer 1 , image then colour wheel)
I then connected the viewer 1 to colour wheel to see it in the viewer window
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After this To get more solid colours i used the gamma correction slider at the top . I then got more colours from this by using a grade node by pressing G and connecting them together. Also put a transform mode in by pressing t .
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Organisation and Roto
In this week we learnt to rotoscope around images and mainpulate them.
To start off I Clicked R in the viewer and brought in the overhead building shot to roto around.
I first played the footage then did a rotop for the top of the building. I brought in a copy node first by pressing k and and a roto node by pressing O, then conncected them all together.
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Then I used the filter tool to soften the edges and pressed M to get a matte overlay of the building.
(Matte Overlay)
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After this I selected all my points and moved back on the timeline so I could rotoscope the building for the while sequence. I pressed q on the keyboard to turn the overlay on/off.
(Pressed space on keyboard to bring up this view)
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Complex Roto
This week I did a roto of a waving hand .Started off by analysing the thumb first bringing in a copy node pressing k and roto node pressing (o). After I used the bezier tool to draw around the thumb
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Used bezier on first section of the thumb, and blspine on the second section of the thumb.
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I then did the roto for the thumb. but first I made sperate folders for it.
Basic keying
In this lesson we learnt about keying so how to remove parts of an image
I then brought in the nuke file and added a keyer and connected it with the viewer( pressing tab in node graph and searching "keyer")
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changed to alpha channel then changed yellow bars in keyer to cut out the sky . After this I then inverted the image (ticking the invert box in keyer) , brought in copy, premult node and after merge node.
I finally connected the nodes all together and made the cloudy sky match the background of the bridge instead of the very bright sky.
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Advanced keying:
In this lesson we learnt how to cover the green screen whilst keeping the detail of a character
De noised the shot first pressed tab in node graph searched denoise.
Brought out a key light node began to key the side of her head
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I then pressed refines the scene using the screen matte setting and pressing a to get back the colour. After this brought ina copy node and blur node to make image less sharp
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Then sampled new area and used key mix and roto tool to bring back detail . After used a premult node to get green screen to merge with character
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Final process of clearing green screen :
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Tracking:
Firstly I brought in image of car and the added a roto node by pressing the tab and searching roto in node graph. Then used bezier tool to draw shap around the wind screen and right clicked on planar track backwards .
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Next I baked the bezier shape onto the car for the animation and added a roto to it. I also added a grade node to make the wind screen lighter
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Advanced clean up : Mex post box
In this lesson I learnt to remove a logo from a box and add in a shadow
Played the scene first then brought in roto node at first frame. then I drew bezier shape around box.
went to 1040 for hero frame and brought in frame hold node . and connected it with roto paint to take off the logo using clone tool . pressing control first and moving to sample an area. then put logo back on box by rearranging the nodes as seen below.
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Then viewed premult node and applied the patch
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Patch on box with node graph display
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Now I will grade the patch . so I put the grade after copy node. put mask from grade node onto roto node. made a shape using bspline to make corner of box darker. using offset slider in grade 1 . chnaged the name of grade 1 to " Top corner"
I put another grade node below and named it "overall", to improve the grade of the box , changing the sliders in the luminance view by pressing Y.
Now the final step was to have a shadow showing on the box when the hand moves. viewed original image and rotoscoped the shadow
Then viewed the merge node and did the rest below . when i viewed the premult node I pressed 1 and 2 to switch between the different nodes
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Assignment 2: class task
for this assignment, we had to use the techniques we've learnt to correct and image. we had to get rid of the letters on the wall , place an image on the tv, remove the logo on the bag and change the green screen
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Removing the letters:
brought in a roto node and use eclipse tool to draw around each letter. after i planar tracked it
Next I set up the nodes in the picture below . brought in a frame hold node. double clicked frame hold node and typed in 1130 in first frame
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I then brought in a roto paint node ontop of frame hold node using the clone tool to paint out the letters
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Now i applied the patch back to the image by bringing in a copy node and a roto shape. then viewed the original image and drew another roto shape around where i painted the letters out
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now i had to roto out the person so he doesnt walk under the patch
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removing logo on the bag
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Firstly, i went to the first frame and brought in a roto node. Then used the bezier tool on the side to draw a shape around the logo
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I then selected the whole shape , right click planar track forward.
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Now I have the corner pin 2d data i will paint out the logo. firstly, i brought in a frame hold node clicked frame hold node and typed in 1020 for the first frame
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Now i brought in a roto paint node and used the clone tool to remove the logo, making sure i put the viewer to the frame hold node.
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Now i applied the patch back to the footage so the logo doesnt show on the scene. after this i ordered the nodes in the image below and moved onto the final step.
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Finally I selected the corner pin 2d1 node and went to the "from tab" and clicked the copy to button. after I clicked all the squigly lines and turned off the animation
applying the colour bars to the tv
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I brought up another merge node under the merge node for removing the logo. I then added the colour bar node and attached it to a reformat node.
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I then rotoed out the head so it wont go under the tv
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adding blue screen:
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brought in a keylight node and viewed it. clicked marker box next to screen colour and ctrl shift and clicked on green screen area. after wards I pressed a to view the alapha channel.
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Next double clicked on keylight node and adjusted the clip black and white setting in screen matte and went back to the viewer and pressed a to bring up the image again
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brought in merge node connecting a pipe to keylight and b pipe to the constant, I changed the constant colour using the colour wheel on the side. then viewed the merge node so blue screen is in backgrund
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My Final node arrangement :
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after I used the write node to render out the scene then put it into after effects
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my final render:
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