Editing digital images

2D computer graphics is the computer-based generation of digital images—mostly from two-dimensional models (such as 2D geometric models, text, and digital images) and by techniques specific to them. The word may stand for the branch of computer science that comprises such techniques, or for the models themselves. 2D computer graphics are mainly used in applications that were originally developed upon traditional printing and drawing technologies, such as typography, cartography, technical drawing, advertising, etc.. In those ...

Including:

• 2D computer graphics - 2D graphics techniques
• 2D computer graphics - Direct painting
• 2D computer graphics - Extended color models
• 2D computer graphics - Layers
• 2D computer graphics - 2D graphics hardware
• 2D computer graphics - 2D graphics software

Read more here: » 2D computer graphics: Encyclopedia - 2D computer graphics

Usually an image viewer is preferred over a bitmap graphics editor for viewing images. Some of the features common to many bitmap graphics editors are: Select a region for editing. Draw lines with brushes of different color, size, shape and pressure Fill in a region with a single color, gradient of colors, or a texture. Select a color using different color models (e.g. RGB, HSV), or by using a color dropper. Add typed letters in different font styles. Remove scratches, dirt, wr ...

Read more here: » Bitmap graphics editor: Encyclopedia - Bitmap graphics editor

Some vector editors support animation, while others (e.g. Macromedia Flash) are specifically geared towards producing animated graphics. Generally, vector graphics are more suitable for animation, though there are raster-based animation tools as well. Vector editors are closely related to desktop publishing software such as Adobe InDesign or Scribus, which also usually include some vector drawing tools (usually less powerful than those in standalone vector editors). Modern vector editors are capable of, and often preferable for, desig ...

See also:

Vector graphics editor, Vector graphics editor - Vector editors versus bitmap editors, Vector graphics editor - Specialized features

Read more here: » Vector graphics editor: Encyclopedia II - Vector graphics editor - Specialized features

2D graphics models may combine geometric models (also called vector graphics), digital images (also called raster graphics), text to be typeset (defined by content, font style and size, color, position, and orientation), mathematical functions and equations, and more. These components can be modified and manipulated by two-dimensional geometric transformations such as translation, rotation, scaling. In object oriented graphics, the image is described indirectly by an object endowed with a self-rendering method—a procedure which assi ...

See also:

2D computer graphics, 2D computer graphics - 2D graphics techniques, 2D computer graphics - Direct painting, 2D computer graphics - Extended color models, 2D computer graphics - Layers, 2D computer graphics - 2D graphics hardware, 2D computer graphics - 2D graphics software

Read more here: » 2D computer graphics: Encyclopedia II - 2D computer graphics - 2D graphics techniques

In digital systems, several techniques, used because of other advantages, may reintroduce generation loss and must be used with caution. "Compression" (more accurately "recoding with a technique that uses fewer bits" ) is often used to minimize storage or communications time used. Lossless compression is, by definition, fully reversible. Lossy compression throws away some of the information which cannot be restored. Ideally, when its use is appropriate, it would only be done once, at a carefully planned spot. Repeated applicatio ...

See also:

Generation loss, Generation loss - Analog generation loss, Generation loss - Digital generation loss, Generation loss - Techniques that bring back generation loss in digital systems

Read more here: » Generation loss: Encyclopedia II - Generation loss - Techniques that bring back generation loss in digital systems

Many graphical user interfaces (GUIs), including Mac OS, Microsoft Windows, or the X Window System, are primarily based on 2D graphical concepts. Such software provides a visual environment for interacting with the computer, and commonly includes some form of window manager to aid the user in conceptually distinguishing between different applications. The user interface within individual software applications is typically 2D in nature as well, due in part to the fact that most common input devices, such ...

See also:

2D computer graphics, 2D computer graphics - 2D graphics techniques, 2D computer graphics - Direct painting, 2D computer graphics - Extended color models, 2D computer graphics - Layers, 2D computer graphics - 2D graphics hardware, 2D computer graphics - 2D graphics software

Read more here: » 2D computer graphics: Encyclopedia II - 2D computer graphics - 2D graphics software

Modern computer graphics card displays almost overwhelmingly use raster techniques, dividing the screen into a rectangular grid of pixels, due to the relatively low cost of raster-based video hardware as compared with vector graphic hardware. Most graphic hardware has internal support for blitting operations and sprite drawing. A co-processor dedicated to blitting is known as a Blitter chip. Classic 2D graphics chips of the late 1970s and early 80s, used in the 8-bit video game consoles and home computers, include: Atari's ANTIC (actually a 2D GPU), TIA, CTIA, and G ...

See also:

2D computer graphics, 2D computer graphics - 2D graphics techniques, 2D computer graphics - Direct painting, 2D computer graphics - Extended color models, 2D computer graphics - Layers, 2D computer graphics - 2D graphics hardware, 2D computer graphics - 2D graphics software

Read more here: » 2D computer graphics: Encyclopedia II - 2D computer graphics - 2D graphics hardware