When studying digital graphics, one of the first topics is its types. These include vector and bitmap images. A distinctive feature of the latter is the pixel structure.
What image is called a bitmap
Bitmaps are made up of tiny square particles called pixels. These squares are organized in a special rectangular grid. The main characteristics of bitmap graphics are height and width in pixels and bits per pixel. The last value indicates how many different colors can be in one such square. If the bitmap is based on the RGB (Red Green Blue) color model, then each pixel will contain three bytes of the specified colors, and each of these bytes will take a value from 0 to 255. The final Colour.
The quality of this type of image is determined by its resolution and color depth. The first characteristic speaks of how many pixels are concentrated in the image, the more their number, the higher the graphics resolution. Color depth tells about the amount of information that each pixel contains; the higher this value, the softer and more pleasant the shades of the image. The disadvantage of raster graphics is scaling: when zoomed in, sharpness is lost, and if the resolution is not high, individual pixels may appear.
Raster Graphics Formats
Raster graphics files can have different extensions, they use different file compression and quality optimization methods, depending on the desired result.
The simple bitmap format BMP is native to the Windows operating system, does not compress files, and therefore are often large in size.
The 24-bit.jpg
TIFF was the format that was used before the advent of PNG, but due to its many variations and the lack of a single processing platform, its support has been discontinued. TIFF can compress images with or without loss of quality.
