Category Archives: Nuke

Final Exercise

I made two shots during the holiday and reviewed what I learned last semester. After finished this assignment. I have become more confident in Nuke.

As usual, I denoise the background original video first which is better for me to track in the next steps. and then roto the astronaut as the foreground. for the rotoscoping, I have to be patient and careful to avoid wabbling on the edge. I divided it into three pieces for roto, bag, head as well as the shoulder. And adjust the location for every 10 frames. The final step of rotoscoping is to match the color of the background and foreground.

Another part of the exercise is Clean up and Tracking. The first step is to track the denoised file and create the Matchmove node. Then remove the chimney by using Rotopaint in one frame. Next is to roto this frame and premult as a reference. It worth noting that when you using FrameHold, you have to set the frame that you just changed as the reference frame. Like the image shows. Otherwise, you won’t get the result.

Here is the Process


Shot 2

The macking process is quite similar with the first shot. It aims to make me more familiar with these nodes.



2D Clean up- week8

In this session, we focused on clean up. For me, this is the most complicated part of this term.

In this footage, I replaced the exterior view of the window and cleaned a small part of the curtain on the right.

For me, the initial work was quite difficult. Because the unfamiliar new node makes me panic. Once I understood how the node works, I tried it several times and then did the following exercises.


In this session, we have learned 2D tracking. It is a simple way for us to add an image or video into another shot.

The new node:

Track node can help us to extract animation data from the shots. Then we can apply the data directly to transform and match-move another element. If the object which you have added into the shot starts skewing weirdly, we should change the different point. Before you tracking, do not forget to set the reference frame.

In addition, we should denoise the original footage before we start tracking. This step can make tracking data more accurate.

Transform, Rotation, Scale, Translation, and crop. These nodes are used to adjust the images, which can make the new element looks more reasonable.

Color Match- week5

For this week we have learned color match.


  • Grade: It is used for both adjusting contrast and brightness.
  • ColorCorrect: The ColorCorrect bode is used to make quick adjustments to contrast, gamma, gain, and offset.

We can consider the color correction as three parts Highlights, Midtones, and Shadows.

Here is the practice.

The original footage


The sceond practice


This week, we mainly learned Rotoscoping, a technique that can trace and cut the part of the objects in the footage. 

There are several nodes that have been introduced

Roto: It can create a mask to assist with operations such as tracking and cutting.

Merge: merge node can be used to merge two footage into a single frame.

  • Here is the outcomes

Hair edge is a big problem for this work. Another thing is that a normal speed footage might be a better choice for me to practice.

  • The second practice

I’m getting more and more proficient with this skill.

  • Third practice

After finishing these three projects, I am quite familiar with rotoscoping. Besides, I find that this is a job that requires a lot of patience and practice. If you want a good result, you need to put the time in. However, I still have a problem with the hair edge. I wonder if Nuke has a tool like channel matting in Photoshop that can cut the irregular edge perfectly.