Science

Book’s Contents Weta workshop Weta Digital Recently I spent a month reading the two books of weta digital && weta workshop, in which weta digital is mainly engaged in computer 3D image creation, while weta workshop is mainly engaged in pre-film concept creation, such as creature and character sculpture, weapon and prop design, actual concept design of the scene, all these are done by weta workshop. And then weta digital makes CG characters and creatures according to the concept design of workshop, and makes these CG move, what interests me more about workshop is their special effects makeup and fine creature sculpting technology, and weta digital we need to learn their all techniques. The main focus of this article is the digital part, and I have pasted screenshots of the technical points of concern into this article, because each key technical point in time and cost breakthrough will bring a qualitative leap to film post-production, and by breakthrough I mean that the technology can achieve the height of the previous failure at low cost. ...

The Art of Innovation When we talk about Renderman, we also have to mention Pixar, the studio that makes animated films. Let’s take a look at the history of the studio, which was born out of the need to create real images in the digital world. The history of Pixar shows that science and art go hand in hand in the world of film creation, so let’s find out what exactly Renderman is a tool for. Just like painting, the painter remembers the color, light and shadow of the objects he sees in his brain through constant observation of the things around him, and then relies on his hands to present the objects of the three-dimensional world on the canvas of the two latitudes, Renderman is such a set of tools, we tell him what objects are in the three-dimensional space, where the light source is, the position of the camera and the angle of observation of this space is. Rendering a picture is of course not enough, we need to make the viewer feel that the picture was taken with a real camera, then we need to simulate real world light and color in the computer world, and that’s what Renderman needs to do. After the model is built, we can output a scene description file that is compatible with the Renderman program, input this description file into Renderman, and we get a photo with real texture. Renderman is actually the specification and implementation of a series of external interfaces that take Rendering out of modeling for independent development, then any 3D modeling program that can communicate with Renderman through these interfaces can deliver the scene description to a renderer with a Renderman interface implementation to render the image. ...

Back in 2020 I wrote a blog post Renderman24 Will Support Blender,at the end of which I documented my intention to purchase a commercial version of Renderman. after more than a year, I realized my idea, configured myself with an image workstation, purchased a commercially copyrighted Renderman, and most importantly, I also purchased a set of EIZO CG319x monitors for myself. The initial reason for preparing all this was mainly because of the rise of web 3.0. I envisioned a one-person freelance career, because the film industry is created through a very large group of people, and it is very time-consuming for one person to complete a live-action film or an animated feature film, or even a short film, independently, because there are many technical as well as artistic stumbling blocks in front of you, and you have to overcome them little by little to complete every detail of the film. Then I thought about the possibility of using the machine’s algorithm to set up the characters’ environment, to generate life and environment in the computer’s world, which is called modeling and animation and scene production in conventional film production. Dare to imagine if the computer can complete these creative processes, such as animal jumping and running, model materials, keying, human walking, we are no longer through the drawing of key frames, debugging materials, manual green screen keying, but through the computer’s learning of the real world to actively explore these key frames, to achieve the simulation of real-world object materials, the precise keying of the characters in the picture, then it seems that a person It is no problem to create a wonderful movie. Of course, this is just an idea, and the technology is not yet so sci-fi. ...

Reference articles https://docs.blender.org/manual/en/latest/render/color_management.html https://rmanwiki.pixar.com/display/REN24/Color+Management https://www.arri.com/en/learn-help/learn-help-camera-system/camera-workflow/image-science/aces https://github.com/colour-science/OpenColorIO-Configs https://acescentral.com/knowledge-base-2/using-aces-reference-images/ https://opencolorio.readthedocs.io/en/latest/configurations/aces_1.0.3.html Talk about Gamma Correction Table[x^2.2, {x, 0, 1, 0.1}] {0., 0.00630957, 0.0289912, 0.0707403, 0.133209, 0.217638, 0.325037, \ 0.456263, 0.612066, 0.79311, 1.} Table[x, {x, 0, 1, 0.1}] {0., 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.} Table[x^(1/2.2), {x, 0, 1, 0.1}] {0., 0.351119, 0.481157, 0.578533, 0.659353, 0.72974, 0.792793, \ 0.850335, 0.903545, 0.953238, 1.} #^2.2 & /@ Table[x^(1/2.2), {x, 0, 1, 0.1}] {0., 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.} To get a preliminary understanding of the gamma function, it can be seen from the above expression that the transformation obtained by the gamma function 2.2, we can keep the input and output in a linear relationship by the inverse gamma function 1/2.2. ...

Abstract This is an article from 2020. After recording the title of the article, I didn’t write the content, but now I’m taking advantage of the vacation time to give a detailed description of Matte Painting, a magical field in which we create fantasy worlds inside our own minds. This article is about the history of Matte Painting and the techniques of Matte Painting. History Wikipedia Matte Painting Matte painting is the painting of landscapes, sets, and vistas, often allowing the filmmaker to create environments in the film that do not exist in the location, combining the painted image with live footage. ...