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Darren_Jiachen Ding_22018988
Category: Nuke
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Week 17: Green Screen Extraction 2
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Week 16: Green Screen Extraction
This week combined with last week’s content to continue learning on the point basis of Matchmove3D. The learning builds on the foundation of 3D space. With the tracking points calculated by the camera, a large number of point arrays can be generated using Point Cloud to organise the relationship between the positions of objects in the frame. Even a prototype 3D model of the scene can be created using BakedMesh.
The assignment for this session is to generate multiple Cards from the tracked points in a space and subsequently add objects and tracking tapers to these Cards. The space is divided into a front ground, a wall with a hole in it, a back ground, and a back wall.
The first Nuke course of the new semester is about the 3D system in Nuke. Here’s our first look at working with the Nuke 3D system. Among them, “scene” and “camera” are the basic nodes of the 3D scene. We can then create basic shape nodes like “Sphere” to add geometry to the “Scene”. You can also import obj files to directly add completed models.
We can adjust the size, material, lighting and many other information of the 3D model in Nuke.
Afterwards, we focused on explaining and practicing the “CameraTracker” node, which allows video sequences to generate points in 3D space through RotoPaint tracking. We can then create and add images or models in 3D space based on these calculated points. Creating a “card” as the ground is our first exercise.
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Week 9: Balloon Festival test 4 & 2D_cleanup
The third Balloon Festival test adds dark clouds to the previous project, these clouds are a sequence of three dark clouds that combine to form the sky. The three clouds were then panned using the ‘Transform’ node. Next I changed my overall colour node, updated the overall flickering effect caused by the lightning, and added a glow node to the lightning in the background so that not only the colour but also the overall effect style of the lightning effect. Finally the rendering was done to mov format.
The second stage was the creation of the sound effects. I went to a free sound effects website and found the sound of wind, thunder and electricity. In addition to this, I also found a piece of low music for the background. I sequenced these in Pr and adjusted the volume decibels. The final export is Balloon Fantasy 4.0 mp4.
2D cleanup is an exercise for the week 9 course. For comparison and practice, I have added new nodes to the original file. The purpose of the cleanup is to combine the previous roto and tracker nodes with other nodes to clean up the screen and add objects to the screen. After creating CornerPin2D in the tracker node, the text was added to the screen by copying and adding text nodes to this node. The erasing effect is achieved with RotoPaint. In this I can replace some of the objects in the frame with backgrounds by copying the brush. The Premult and FrameHold nodes then allow them to blend in with the picture.