Fundamental Techniques for Creating 3D Imagery

3D image creation

3D animated videos fascinate the viewers as they make the characters come across as real creating an unrivalled experience that is improbable in 2D world. The technology deludes human eyes into believing that the flat screen extends deep. It is like a real landscape with real characters moving around. Graphic designers with expertise in 3D use visual tricks to achieve this.

What makes an image 3D pictures having height and width but no depth are 2D, while graphics that appear to have height, width and depth are 3D. A triangle, for instance, is 2D, while a pyramid with four triangular sides is a 3D structure. This indicates that more information is required in creating 3D imagery.

Basic techniques for long, artists have known ways to indicate depth in 2D painting. When objects are far, they appear smaller; as objects move closer they become larger and colors also become more vibrant. To make a certain area appear focused, colors are made brighter, while the objects located farther are fuzzy. Of course, things are more complex in 3D animation, involving moving objects.

Creating 3D Graphics There are three major steps to make realistic 3D graphics:
  • 1. Design a 3D virtual world
  • 2. Decide what part of this world will appear on screen at a given time
  • 3. Determine the appearance of every pixel on the screen to make the imagery look realistic.

Setting behavior in a 3D Virtual World Objects in a real world behave in a certain way. For instance, living persons will always move ahead on roads, not backward. If you jump on a solid surface, it won’t splash. The same holds the truth for the virtual world as well. All objects have certain properties given to them by the professional game designer using software. Great care must be taken when defining how objects will behave in a virtual world.

How will the virtual world appear on the screen in a video showcasing the real world, only a certain part will appear on the screen at any given time. It is upon the maker what they want to show. The virtual world too does not appear on the screen in totality; rather it is just a part of the total that the user sees. Wherever a character moves – forward or backward, left or right – surroundings will appear depending upon that direction.

Making the imagery look realistic several image parts affect its appearance on the screen – lighting, perspective, shapes, surface textures, depth of field and anti-aliasing. Scenes constitute of all sorts of shapes, with straight lines and curves in various sizes and combinations. Surface textures help the viewers associate qualities that they cannot see in the objects. Lighting has a key role in giving the appearance of weight and solidity to objects.

Perspective involves using software to calculate the relative sizes of the item. Depth of field is used to create the illusion of a real world scene as well as focus the viewers’ attention on the items or actors they want. If the objective is to impress the viewers with the whole scene, they would use deep depth of field.  Anti-aliasing is the process of adding additional colored pixels to make human eye see a smooth color, or line.

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