In this term, whether it is a cooperative project or a personal project, I have a deeper understanding of this major. It made me more familiar with the film and television production process.
For personal projects, my main purpose is to consolidate and strengthen the content of the last semester. Make me to be more familiar with the post-production process. From modeling to texturing to compositing. This pratices allowed me to solve many technical problems. Examples include how to create hard surface models in Zbrush, layered rendering in Maya, and texturing. I think these things can make me more confident in my future creations.
For me, the main purpose of the collaborative project is the research on special effects such as smoke particles, as well as the knowledge of what I have learned before. For example, the clean-up, camera tracking and shooting. This is the first time most of us have the shooting experience, so many problems have arisen. For example, we did not carefully consider the final effect of special effects when shooting. Therefore, it is difficult for us to match character actions with the animations of the portal effects. In addition, the lack of preparation of props made it difficult for us to Roto out later. If we use a green screen when shooting, we may be able to create better effects and save a lot of time. But I am very happy to have those kind of experiences. It can help me avoid many problems in my future creations. I am also glad to be able to complete this project with my team members. Diana is a very good leader. In this exercise, she helped me solve many problems.
In general, I have gained a lot this semester. Regardless of the results, I am very happy to have these experiences.
This shot is quite tricky for me. This shot mainly shows that Diana draws a stroke on the wall, and then the portal slowly spreads out to form a circle. like the image shows.
I tried several different effects in After Effects. But the result is not very good. The portal looks like a flat surface. It is not very suitable for the scene.
Here is the first version for test.
Obviously, this result is not ideal. And the style of this portal is different from other portals. After a group discussion, we decided to use the effect of smoke instead of light. So I created the portal in the same way as in the previous shot. However, adjustments have been made to the animation. Make the portal appear as a line at the beginning, and then slowly expand into a circular portal.
I rendering the portal separately into two parts, the main object and shadow.
I encountered several problems in rendering. The first is the voxel size of the portal. I found that when I adjust the voxel size to a smaller value, it will bring better and clearer results, but at the same time, the simulation cache and rendering time will be longer.
The second problem is that when I perform multi-pass rendering, there will be a problem as shown in the figure. In the rendering process, there is no white edge in this circle, but it will suddenly appear when the rendering is completed. It still exists when I composite it in Nuke. In the end, I found that the problem is the alpha channel.
This kind of problem will not occur after canceling the option of straight alpha in the rendering settings.
Here is the process of combination.
I clean up the material first, remove the signs and pipes on the wall. Then extract the projection through the shuffle node and merge it with the portal and the original material.
Then add another scene video to the screen. This expresses the meaning of Gherardo being transferred from another scene.
Then add the portal and shadow.
The last step is to Roto out Gherardo and use another roto node as a mask to make Gherardo through out of the portal. In fact, this is more difficult. Because this camera is in the front. Many problems cannot be concealed by covering up. And due to our early considerations, Gherardo’s actions are not very match with the portal animation. Through discussions with adlo, his suggestion to me is to adjust Roto to make the shot looks real.
I started the first portal test after we finished shooting.
According to our concept, I did a test of two versions of the portal. After group discussion. Everyone will prefer the second version. So next I will develop the production plan of the portal in the second version.
For the second version, I decided to use the Turbulence plug-in in C4D to help me complete the production of the portal. In the transmitter, a divergent smoke ring can be obtained by adjusting the turbulence, temperature and density. In order to make it closer to the effect of the portal, rather than just a single-layer ring, I added another ring behind the first ring to make it attractive to the smoke of the first ring.
According to the tested version, we found that the portal did not interact with the surrounding environment and the arch. The portal looks like it is pasted on the screen. It is not very harmonious with the scene. Therefore, ambient light and projection are very important to us. So I imported our footage in the taste. And an arch was created based on the shape. This allows a good interaction between the portal and the arch.
In the first week, Diana collected everyone‘s ideas in our group. In the end, two ideas were adopted. The first one comes from Diana. The main theme is that several characters use portals to travel to various places in London. We want to use 3d characters such as mice and bees to guide the protagonist in different directions.
This is the inspiration.
The second idea comes from Gherardo. It is mainly the multi-layer relationship of an object in the picture.
This video may be able to express the meaning better. https://www.instagram.com/p/CN2Z6kriPVI/?utm_source=ig_web_copy_link