Блог рендер-фермы

How Motion Capture Works: From Optical Markers to AI-Powered Mocap

Motion capture, also known as mocap, is a technology used by filmmakers and animators to capture real movement and transfer it to a digital scene.

If you’ve seen behind-the-scenes footage of movies where actors wear optical markers and mocap suits while filming, that’s exactly the motion capture process. Today, markerless and AI-powered motion capture is also possible.

This guide explains how mocap works, compares the main system types, traces how the technology evolved, and follows the path from raw capture data to finished animation.

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What Is HDRI? How Image-Based Lighting Works in 3D Rendering

HDRI (High Dynamic Range Image) is one of the main ingredients that bring 3D scenes to life. It stores a much wider range of light intensities than a standard image, which helps 3D scenes look more realistic.

In this guide, we’ll explain how HDRI and image-based lighting work, how environment maps affect lighting and reflections, and how to set up, choose, and troubleshoot an HDRI in your scene.

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Perlin Noise: Procedural Generation and Texturing

Perlin Noise was a major breakthrough in procedural generation and computer graphics, developed by Ken Perlin to make computer-generated imagery look less "machine-like" and more natural.

Perlin noise made it possible to generate smooth, natural-looking variations that mimic patterns found in the real world. It is now widely used to create terrain, clouds, textures, landscapes, and other elements that are meant to look organic rather than artificially generated.

It is the predecessor of Simplex Noise, which Ken Perlin introduced in 2001 and which leaves fewer directional artifacts (unwanted patterns), especially in higher dimensions.

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RebusArt featuring Hamid Reza Abbasi

In our latest RebusArt Feature, we introduce you to Hamid Reza Abbasi, an architect, 3D artist and educator. Hamid combines his architectural background with a passion for realistic visualization, bringing together design, lighting, materials, and atmosphere in his work. Join us as we learn more about his journey in the 3D industry, his creative approach, and the process behind his Minimalist Apartment project.

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What Is Subsurface Scattering? How SSS Makes Skin, Wax, and Marble Look Real in 3D

Have you ever pressed a flashlight against your fingers and noticed how light goes through them and makes them glow a warm red color? This effect is called subsurface scattering (SSS): light enters a material, scatters beneath its surface, and exits elsewhere.

The same behavior can also be observed in semi-translucent materials like wax, marble, jade, and even food. This effect is quite important in 3D rendering as it makes objects look realistic. Without it, objects may appear unnaturally flat, opaque, and plastic-like.

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What Are Caustics in 3D Rendering? Types, Methods, and How to Render Them

Caustics, or caustic lighting, are one of the most recognizable effects in 3D rendering, appearing as concentrated patterns of light around reflective or refractive objects. They are also among the hardest lighting effects to reproduce accurately.

Naturally, they can take a long time to render without multiple computers or the help of a render farm, because they involve complex lighting calculations. For animators, this creates a trade-off between rendering speed and visual quality, as well as the question of whether to simulate caustics physically or use artificial techniques to achieve a similar effect. We’ll explore both approaches in more detail below.

In this guide, we'll cover reflective, refractive, and water caustics, along with common rendering methods, including ray tracing, path tracing, photon mapping, and faster simulated techniques.

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What Is CGI Animation? How CGI Works in Movies and Games

CGI, or computer-generated imagery, is any visual content created with computer software, from still images and digital effects to fully animated 2D or 3D scenes. It has dominated modern film and game production for a long time because it simply makes physically challenging or even impossible scenes doable. CGI can make many productions more efficient by reducing repetitive manual work and allowing assets to be reused.

After reading this guide, you'll know what CGI is, how it's made, the software professionals use, how rendering works, what makes CGI look realistic, and why some CGI falls short.

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RebusArt featuring Ahmad Eghtesad with Baobab Waterfall

Welcome back to RebusArt, Ahmad! It’s great to have you with us again. When we last spoke in January 2025, we explored your journey as a 3D artist, your passion for storytelling, and the creative vision behind your architectural visualizations. Since then, you’ve brought several impressive new projects to life, including Baobab Waterfall. We’re excited to catch up, see how your work and artistic approach have evolved, and take a closer look at the ideas and creative process behind your latest project.

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What Is Stop Motion Animation? Types, History, and Famous Examples

Stop motion is an animation technique in which physical objects are photographed one frame at a time and shifted in tiny increments between shots. Played back in sequence, those frames create the illusion of smooth movement. The method dates back to 1898 and is still actively used in film, TV, and advertising today.

In this guide, we’ll talk about what stop motion is, different stop motion types, its rich history, stop motion in movies, how it’s made, and why we still see this age-old technique even in this new era dominated by CGI and AI tools.

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