We cannot imagine the world without images and computer brought revolution in the way we look at images. In this article we will see about the Computer Generated Images. But, before that let us understand what is a image and types of images.
“A picture is worth a thousand words” margin is considered for all multimedia applications. Multimedia graphics include all types of still pictures that are photographic images and even few designers use computer generated images in their animations and multimedia applications. There are many types of images. Now let us consider few. They are:
- Still images
- Animated images
- Computer generated images
Still images are the images used by everyone very commonly that are pictures taken from camera. These images are copied from camera to paintings on canvases. Still images are the first images introduced to the computer world in the form of pictures and icons. Still images represent the majority of the images used today since they tend to be of small file size and require less disk space than animation (or) movies. They also don’t require special software to be installed in order to view them. Today every operating system it may be Windows (or) Linux can open still images without the need of additional software.
Animated images were introduced to the computer world shortly after the still images. They represent a series of still images shown in a succession, giving the user the idea of an animation. In the internet world, animations were introduced by animation GIF (Graphical Interface File) files. GIF was originally a file format for still images but it is now synonyms with animated images. GIF animation usually are short, not more than several seconds long, and consist of less than 10 still images.
Computer Generated Images:
Today images can be easily created with a computer programme (or) programming language by simply entering several parameters. The Image Magick software is a popular choice among PHP programmers. With it, one can easily create simple still images with several effects. This software is very handy when you have to resize several images online (or) create thumbnails for them- all of this can be added in a simple script.
Images of multimedia projects can be one of the following
- Photographic images
- Clip-art images and
- Three Dimensional images [3D images]
All types of photographs brought in to the computer are termed as photographic image. They are presented by the computer as a bitmap [Bmp]. These images can be used directly using digital photography (or) from scanning.
Clip-art images are the pictures that are drawn directly in the computer, using different types of software. The digital artist uses digital paint and brushes to brighten and brings life to his/her imagination. Packages like “Factual Design Painter” and “Adobe illustration” are used by the digital artist. These images are called “vector images”. Examples of vector images are lines, arcs, curves etc these can be modified easily later.
The 3D graphic images are developed using high end 3D software packages for specific purpose of the project. It consumes a lot of time to develop a 3D graphic image and requires experts to design an image. Images stored as bitmaps can be captured from the computer screen by pressing respective keys on the computer keyboard. Later this converts a video bitmap into a graphical mode after certain manipulations with the help of multimedia application software such as Vfx, animation software [3D] etc.
In a window, when Prt Scr [print screen] key is pressed from a keyboard a copy of the screen will be printed and this image goes to clip-board. Clip-board is an area of memory where data is stored in the form of text or image until they are cut; copy is made within the application. After editing it, it can be captured and pasted into an application such as paint.