rasterimuotoja

Rasterimuotoja refers to raster image formats, which are digital images composed of a grid of pixels. Each pixel has a specific color value, and when viewed together, these pixels create the appearance of an image. Unlike vector graphics, which use mathematical equations to define shapes and lines, raster images are resolution-dependent, meaning their quality can degrade when scaled up.

Common raster image formats include JPEG (or JPG), PNG, GIF, and BMP. JPEG is widely used for photographs due to its efficient compression, which reduces file size by discarding some image data. PNG is known for its support of transparency and lossless compression, making it suitable for graphics and web images where sharp details are important. GIF is an older format that supports animation and transparency but is limited to a 256-color palette. BMP, or Bitmap, is a less compressed format often used by Windows and can result in larger file sizes.

The choice of raster format depends on the intended use of the image. For photographs, JPEG is often preferred for its balance of quality and file size. For graphics requiring transparency or sharp edges, PNG is a better choice. For simple animations or older web compatibility, GIF might be used. Understanding the characteristics of each raster format is crucial for optimizing image quality and file management in digital media.