Computer animation

Computers make moving pictures.

They show many small pictures very fast. This makes things look like they move. It is like magic on a screen.

To make this work, the computer shows one picture. Then it quickly shows a new one. This new picture is just a little bit different.

If the pictures change fast enough, things look smooth. Most movies show many pictures every second. This tricks your eyes into seeing movement.

Artists use computers to make these pictures. They do not always need real actors. They can make anything they can imagine.

Some artists make flat pictures. Other artists make shapes that look real. It is a fun way to tell stories.

Computer animation is a way to make moving images.

Artists use computers instead of real actors or sets. This lets them make anything they can imagine.

To make movement, the computer shows many pictures very fast. We call each single picture a frame. If the computer shows 24 frames every second, the movement looks smooth.

If the frames change too slowly, the motion looks jerky. Most movies in theaters use 24 frames per second.

There are different ways to animate. Some artists make flat, 2D images. Others make 3D models. In 3D animation, artists build shapes on the screen. They often give these shapes a virtual skeleton.

This helps them move limbs or eyes easily.

An artist sets "key frames." These are the most important parts of a move. The computer then uses interpolation to fill in the rest. Interpolation is a way to make the computer draw the middle steps automatically. This saves a lot of work for the artist.

Computer animation is a special way to create moving images using digital tools.

Instead of using real actors or physical sets, artists use computers to build everything. This method is a digital successor to older styles like stop motion. It is part of a larger group called computer-generated imagery, or CGI. CGI includes both still pictures and moving images. This technology is very powerful for creators. It lets a single artist make amazing things without expensive props.

To make things look like they are moving, the computer uses a clever trick. It shows a single image, called a frame, and then quickly replaces it. The new image is slightly different from the last one. This happens many times every second. To trick your eyes into seeing smooth motion, you need at least 12 frames per second. Most movies in United States theaters use 24 frames per second. If the rate is too low, the movement looks jerky.

Hand-drawn cartoons often use 15 frames per second to save time.

Creating 3D animation involves several specific steps. First, an artist builds a digital model on the screen. Next, they give the model a virtual skeleton, which is called a rig.

The artist then sets key frames for the most important movements. For example, they might move an arm to a new spot. The computer then uses interpolation to fill in the middle steps automatically. This process is also called tweening. Finally, the computer performs rendering to turn shapes into a finished product.

People have been working on digital animation for a long time. Early work began in the 1960s at Bell Telephone Laboratories. Scientists like Edward E. Zajac and A. Michael Noll helped start this field. In 1967, Charles Csuri and James Shaffer made an animation called "Hummingbird." Later, in 1968, a cat named "Kitty" was animated using a computer called BESM-4.

By 1976, the film Futureworld used 3D technology. These early steps led to the amazing movies we see today.

You can see different types of animation in your favorite films. The movie Toy Story was a major turning point for 3D animation. Some movies, like Interstellar, use math to make black holes look real. Other films use 2D animation to show different artistic styles. For instance, the movie Klaus uses 3D lighting to help 2D drawings look special.

Even small studios can win awards for great visual effects. This technology helps turn an artist's imagination into something we can all see.

Computer animation is the digital process used to generate moving images. It is a digital successor to traditional methods like stop motion and hand-drawn illustration. While the broader term computer-generated imagery, or CGI, includes both still and moving images, computer animation refers specifically to the moving kind. This technology allows a single graphic artist to create entire worlds. They can do this without the need for live actors, expensive physical sets, or real props.

To create the illusion of movement, computers use a technique involving frames. A frame is one complete image. The computer displays an image on a monitor and then quickly replaces it with a new image. This new image is slightly advanced in time from the previous one. This happens at a specific rate, such as 24, 25, or 30 frames per second. To trick the human visual system into seeing smooth motion, the rate should be around 12 frames per second or faster. If the rate falls below 12 frames per second, people can detect jerkiness. This jerkiness breaks the illusion of realistic movement.

In 3D computer animation, the process follows a specific technical pipeline. First, artists create digital models on the computer monitor. These models are then rigged with a virtual skeleton to allow for movement. The animator then sets key frames, which are the most important positions in a sequence. In 3D animation, the computer uses interpolation to fill in the gaps between these key frames. This automated process is also known as tweening. Finally, the animation must be rendered to become a finished product.

Interpolation is a vital tool for 3D animators. The software generates a spline, which is a mathematical curve, between the plotted keyframes. These splines can follow Bézier curves to control how the animation curves. This allows animators to change the timing or scale of a movement without redoing every single frame. Animators can also use procedural tools like 4D noise to automate complex tasks. For example, 4D noise can simulate a swarm of bees by using three dimensions for space and a fourth dimension for time.

The animation industry is divided into many specialized disciplines. This collection of workflows is called the 3D animation pipeline. One discipline is face rigging, which uses digital muscles to create realistic expressions. Another is facial animation, which involves lip-syncing and morphing facial shapes. Character animation is a complex specialty focused on high-fidelity motion like running or dancing. There is even a specific career path for cloth simulation. This involves using specialized software to make digital clothing move realistically.

Digital animation has a long history of discovery. Early development occurred in the 1960s at Bell Telephone Laboratories. Researchers like Edward E. Zajac and A. Michael Noll were among the pioneers. In 1967, Charles Csuri and James Shaffer created the animation "Hummingbird." In 1968, a computer called BESM-4 was used to create "Kitty," an animation of a moving cat. By 1976, the film Futureworld utilized 3D technology. These early experiments paved the way for the modern era of digital storytelling.

We can see the impact of these technologies in many famous films. Pixar's "Toy Story" was a major turning point for 3D animation. The film "Interstellar" used scientific principles and mathematics to create a photorealistic black hole. The movie "Klaus" used 3D lighting to enhance 2D animation styles. Even smaller studios can achieve greatness, as seen with "Godzilla Minus One." This film won an Oscar for its groundbreaking visual effects despite having a relatively small budget.