Rasterkujunduses

Rasterkujunduses, also known as raster graphics or bitmap images, are digital images formed by a matrix of pixels. Each pixel contains specific color information, which when viewed together, form an image. This type of graphic is widely used in digital photography, digital painting, and image editing software.

The term "raster" originates from the horizontal scan lines that form an image on a display. In a raster image, each pixel's color is defined by a combination of red, green, and blue (RGB) values, although other color models like CMYK (cyan, magenta, yellow, and key/black) are also used, particularly in printing. The resolution of a raster image, often measured in pixels per inch (PPI), determines the level of detail and clarity. Higher resolutions result in sharper images but also require more storage space.

Raster images are resolution-dependent, meaning they can become pixelated or blurry when enlarged or scaled up. This is because there is a finite number of pixels, and stretching them beyond their original size can lead to visible gaps or distortion. Common file formats for raster images include JPEG, PNG, GIF, and BMP. Each format has its own advantages and is suited for different types of images and uses.

Raster graphics are versatile and widely used in various applications, from web design to digital art. However, for images requiring scaling or vector manipulation, vector graphics may be more appropriate due to their resolution-independent nature. Understanding the characteristics and limitations of raster images is essential for effective digital image management and manipulation.