This week we followed the opportunity to successfully complete our group project. This week our group mainly worked on video editing and post-processing. I learned a lot from this group work, first of all, that team projects need to be a joint effort. Our team leader is a very strong leader. This also kept our process in order. Our group members were also very united and communicated actively. There were some minor twists and turns in the middle, but we got over it. Our group is still very satisfied with the work this time. This is the result of our joint efforts. I am also very grateful to my friends for their serious efforts while working. Only by working together and being strict with the project, we can produce excellent work.

Homework

This week the teacher talked about how to further process the green screen material, for example, we can use SpillReplace to do smoother processing of the colors.

We can also use constant to select specific colors in the video, which facilitates better editing.

Then it also introduces the simple method of deducting the blue screen

First of all, I first used keylight for deduction, but the processing of hair is not satisfied, after using SpillReplace for color processing, the effect is much better. After that, I used blur to process the edges, and then the alpha layer of the character was processed. Copy the alpha layer to the image and combine the background with the character. Finally, the whole job is finished with color mixing. After that, the background was resized so that the video had no black edges.

The last week, my machine was rendered and I was going to combine the scene with the machine through NUKE.

Since the two images that merge together will overlap, the first thing I have to do is make a projection to ROTO the part that is obscured in front of me. let the machine be behind the scene.

The ROTO must be done very carefully. Because it will affect your visual effect.

Once the ROTO is complete you can create a card to project the ROTO part onto this plane. This way the other camera can see the projected part when it is played. After that, the ROTO part Invert to the position of the Lieutenant-General to make an alpha layer. And combine this layer with the scene.

Finally, the machine will be toned and Merge to the scene with the production, in Merge a background to the machine. The entire video machine part has been completed

Afterward, to make the scene look more realistic, I removed the coordinate points on the teacher’s environment by projection.

Finally, I output the video, and my machine is finished.

This week I have mainly been working on renders. To make the rendered scenes crisper. I increased the rendering values. The whole rendering process lasted for two days.

Once the rendering is complete I will also import the images into NUKE next week for the final assembly.

Due to the layered rendering. I rendered the image with a certain color difference from the original image. This problem I am going to adjust through Nuke

This week our model, materials, and lenses have been completed, this week is mainly to do the final light debugging and rendering work.

I actively communicate with the group leader about the color and lighting of the scene. Several more revisions were made before the rendering began. I mainly rendered the four scenes I made myself.

And finally the colors of the scene I rendered out. In this week and next week our group will edit the video clip and add some special effects to make the whole clip look more realistic and perfect.

Finally, we should also use NUKE for the final adjustments.

Homework Video

This week we learned to use IBK COLOR, IBK GIZMO, KEYLIGHT,

PRIMATE, ADMIX, LIGHT WRAP, to quickly clear the green screen

IBK COLOR, IBK GIZMO

ChromaKeyer

KEYLIGHT

PRIMATE&UNPRIMATE

Some of these methods are two-dimensional identification of colors for keying, while Primatte is color keying in a three-dimensional perspective. The first two I think are suitable for simple keying, while Primatte I think will work better.

After that, the teacher also talked about how to use channels to change the background color.

For the assignment, I used the channel to give the main characters a clear alpha layer, after which I used keylight to subtract the green screen. After toning, I combined the background with the characters, and removed the mics with masks, and used tracking to move the background with the characters.

This week our teacher showed us how to use the green screen for processing and how to use the Keyer and Colourspace nodes for color and saturation adjustment.

We can use the IBKGizmo and keylight nodes to deduct the green screen so that the object can be separated quickly

Then, we learned the node Keyer，

his node gives you access to several simple keyers. You can use it to pull keys based on the input image’s:

• red, green, or blue channel,

• red screen, greenscreen, or bluescreen,

• luminance (the default),

• saturation, or

• maximum and minimum values.

To use this node, view the alpha channel in the Viewer. Then, use the range graph to adjust the low and high pixel values of the matte. The A handle determines the low or transparent values of the key: any pixels that fall below this value are clipped to black. The B handle determines your high or opaque values: pixel values above this setting are clipped to white.

After that, I learned that I can get the part I want to highlight by using the phase subtraction of the color channel, but this paragraph is a little difficult to understand.

After that, a new node EdgeDetect, which is a node that detects edges, is also known. It can identify edges quickly.

After that, we learned a series of nodes such as colorlookup, which helps us to adjust colors faster.

For the final assignment, I used the channel color subtraction method to try to come up with the area I wanted, a knowledge I will have to continue to consolidate in the future.

This week I mainly adjusted the light in my scenes.

I adjusted the color temperature and the angle to make the machine fit the whole environment better. And adjusting the edges of the light to make the shadows more realistic

After that, it was time to start rendering. Since you are rendering in layers, set the AOV in the render. When all the layers have been added you will finally merge them together.

This week I used sp to apply textures and maps to the scenes I needed to make. And adjusted the lighting. To make the scene look more realistic.