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Computer animation can be described as an art form that involves bringing still images to life using computer technology. Animation in this form can apply to images on a computer or to those in film. When is used for movies, this technology is often called computer-generated imagery (CGI).
To create computer animation, a still, or non-moving image, is first displayed. With speed in mind, this image is then replaced with another image. The new image is very similar to the first, but has been changed in some small way. Each subsequent image is changed slightly. This combination of rapid image replacement and slight alteration of images creates the illusion of movement. Though computer technology is used for animation, the technique of creating the look of movement is the same as that used for television and movie animation.
To understand how movement is created with computer animation, consider a blank screen. Now imagine a person drawn on the left side of the screen. Then imagine the screen is blank again, and the next time you see the image of the person, it is positioned just a little to the right of its initial position. Once more, the screen is blanked, and the person is moved a bit more to the right. At a high speed, this slight movement of the image will result in the appearance of smooth movement to the right.
Speed is key to the success of computer animation. To give the illusion of smooth movement, complete images, often called frames, must be shown at speeds of at least 12 images per second. At lesser speeds, the human eye is able to detect a certain amount of jerkiness. Interestingly, however, there is no advantage to showing images at speeds of 70 frames per second or more, as there is no noticeable improvement in movement perception at speeds this high.
When animation is created using conventional hand-drawn methods, it is not uncommon to use 15 frames per second. This is done to economize on the amount of drawings necessary to create the animation. However, computer animation is often used to create more realistic looking images. As such, the use of more frames per second is typically necessary.
A computer and special animation software are necessary for the creation of computer animation. There is a wide variety of animation software on the market today, with prices varying according to the intended use. In general, animation software intended for the novice to enjoy for fun or for simple animation is less costly. Software for more professional animation is not only more expensive, but also more comprehensive. However, even the most basic animation programs are capable of creating some amazing animations.
Frequently Asked Questions
What is computer animation and how is it used?
Computer animation is the process of creating animated images and videos using computer graphics. It's widely used in various industries, including film, television, video games, and virtual reality. The technique involves generating animated sequences by manipulating digital models or objects. According to the Animation Career Review, the global animation industry was valued at around $259 billion in 2018, showcasing its extensive use and impact across multiple media platforms.
What are the different types of computer animation?
There are primarily two types of computer animation: 2D and 3D. 2D animation, akin to traditional hand-drawn animation, involves creating movement in a two-dimensional space. 3D animation adds depth, creating more lifelike characters and environments. Additionally, there are techniques like motion capture, which records real movement for digital replication, and stop-motion, which uses physical models in a frame-by-frame animation method, as reported by the industry resource Animation Mentor.
What software is commonly used for creating computer animations?
Several software programs are popular for creating computer animations. Autodesk Maya is renowned for its powerful 3D modeling and animation tools, while Adobe After Effects is a staple for motion graphics and visual effects. Blender, an open-source alternative, has gained significant traction for its comprehensive suite of tools for 3D animation. According to a survey by the International Animated Film Society, these tools are among the most used in the animation industry.
How has computer animation evolved over the years?
Computer animation has evolved dramatically since its inception. Early animations were simple and lacked the sophistication of today's graphics. The introduction of 3D computer graphics in the 1970s revolutionized the field, leading to the first fully computer-animated feature film, "Toy Story," in 1995. Since then, advancements in technology have led to hyper-realistic animations and the integration of AI, enhancing the speed and quality of animation production, as detailed by the ACM SIGGRAPH, a leading digital graphics association.
What skills are required to become a computer animator?
Becoming a computer animator requires a blend of artistic talent and technical proficiency. Key skills include a strong understanding of motion, physics, and storytelling, along with proficiency in animation software. Artistic skills like drawing and a good sense of timing and composition are also crucial. The U.S. Bureau of Labor Statistics highlights that most positions require a bachelor's degree in computer graphics, fine arts, animation, or a related field, along with a strong portfolio of work.