In computer graphics, a raster graphics image or bitmap is a data structure representing a generally rectangular grid of pixels, or points of color, viewable via a monitor, paper, or other display medium. Raster images are stored in image files with varying formats。
在計算機圖形中,光柵圖形(raster graphics)圖像或點陣圖(bitmap)是一個資料結構較普遍矩形(rectangular)網格的像素(),或點顏色,通過可視監視器,紙或其他顯示介質。光柵圖像存儲在圖像文件(image files)具有不同的格式。