linjeskanning

Linjeskanning is a technique used in computer graphics and image processing. It refers to the method of generating an image by drawing it line by line. This process is fundamental to how many display technologies work, including older cathode ray tube (CRT) televisions and monitors. In a CRT, an electron beam scans across the screen, illuminating phosphor dots to create the image. The beam moves horizontally across the screen, creating one line of the image, and then moves down slightly to the next line. This is repeated until the entire screen has been scanned, forming a complete picture.

The concept of linjeskanning is also relevant in digital image capture and transmission. For instance, in early scanners, the image was captured a line at a time as the scanning head moved across the document. Similarly, in some video compression techniques, information about each line of the image is processed and transmitted sequentially. While modern displays often use different technologies like liquid crystal displays (LCDs) or organic light-emitting diodes (OLEDs) that may not literally scan line by line, the underlying principle of constructing an image from discrete rows of pixels remains. The term can also be found in contexts related to medical imaging or scientific visualization where data is acquired or displayed in a sequential, line-by-line fashion.