Rasterisation is the task of taking an image described in a vector graphics format (shapes) and converting it into a raster image (pixels or dots) for output on a video display or printer, or for storage in a bitmap file format.
Raster scan is based on television technology. In this the electron beam is swept across the screen, one row at a time 4m top to bottom, which creates a pattern of illuminated spots. When a CRT is...
RASTER:-* raster display have less resolution decrease memory cost have made raster system popular display or capturing a video line by line
Random :-* random displays have high quality resolution...
1)raster displays have less resolution.2)the lines producced are ziz-zag as the plotted values are discrete.3)high degree realism is achived in picture with the aid of advanced shading and hidden...
Displaying or capturing a video image line by line. Computer monitors and TVs use this method whereby electrons are beamed (scanned) onto the phosphor coating on the screen a line at a time from left...
Advantages of Random scan display:
1)high resolution
2)produce smooth line drawings.
Disadvantages of random scan display:
1)costlier
2)just does wire frame.
3)complex scene cause visible...