rasterikuvaa

Rasterikuva is a digital image format that represents images as a grid of pixels, each containing color information. Unlike vector graphics, which use mathematical equations to define shapes and lines, raster images are composed of discrete picture elements. This format is widely used in digital photography, web graphics, and various forms of digital media.

The term "raster" originates from the Latin word "rastrum," meaning "rake," reflecting the grid-like structure of the image. Raster images are typically stored in files with extensions such as .jpg, .png, and .gif. Each pixel in a raster image can be manipulated individually, allowing for precise control over the image's appearance.

One of the key advantages of raster images is their ability to capture complex details and subtle color variations, making them ideal for photographs and other high-detail images. However, raster images can suffer from a loss of quality when resized or scaled, as the discrete nature of pixels can lead to pixelation or blurring.

Raster images are also used in various applications, including graphic design, video editing, and web development. They can be compressed to reduce file size, making them suitable for web use and digital storage. However, compression can lead to a loss of image quality, particularly in formats like JPEG, which use lossy compression.

In contrast to raster images, vector graphics use mathematical equations to define shapes and lines, allowing for infinite scalability without loss of quality. This makes vector graphics ideal for logos, icons, and other graphics that need to be resized frequently.

Raster images have been a fundamental part of digital imaging since the advent of digital cameras and computers. Their ability to capture and display complex visual information has made them indispensable in various fields, from photography to digital art.