投(tou)(tou)(tou)(tou)(tou)影(ying)(ying)(ying)(ying)(ying)沙(sha)盤(pan)又稱數字沙(sha)盤(pan)投(tou)(tou)(tou)(tou)(tou)影(ying)(ying)(ying)(ying)(ying)系統，分為實體模(mo)型(xing)與(yu)虛擬(ni)影(ying)(ying)(ying)(ying)(ying)像(xiang)相(xiang)結合及全(quan)虛擬(ni)兩種。所謂投(tou)(tou)(tou)(tou)(tou)影(ying)(ying)(ying)(ying)(ying)沙(sha)盤(pan)就是(shi)以(yi)計算(suan)機技術為核心的(de)現代高科(ke)技手段生(sheng)成(cheng)逼真的(de)三維(wei)圖像(xiang)模(mo)型(xing)，借助投(tou)(tou)(tou)(tou)(tou)影(ying)(ying)(ying)(ying)(ying)顯(xian)示(shi)設備或(huo)其他顯(xian)示(shi)設備把(ba)計算(suan)機上(shang)的(de)三維(wei)或(huo)四維(wei)圖形(xing)(xing)圖像(xiang)模(mo)型(xing)顯(xian)示(shi)到臺面(mian)上(shang)。具體地說，是(shi)將模(mo)擬(ni)的(de)投(tou)(tou)(tou)(tou)(tou)影(ying)(ying)(ying)(ying)(ying)影(ying)(ying)(ying)(ying)(ying)像(xiang)精確投(tou)(tou)(tou)(tou)(tou)影(ying)(ying)(ying)(ying)(ying)到實體模(mo)型(xing)的(de)相(xiang)應(ying)位置，與(yu)實體沙(sha)盤(pan)互動(dong)(dong)(dong)展示(shi)的(de)演示(shi)相(xiang)映成(cheng)輝，使沙(sha)盤(pan)的(de)演示(shi)效果更(geng)加形(xing)(xing)象、生(sheng)動(dong)(dong)(dong)，還可以(yi)是(shi)桌(zhuo)面(mian)投(tou)(tou)(tou)(tou)(tou)影(ying)(ying)(ying)(ying)(ying)、地面(mian)投(tou)(tou)(tou)(tou)(tou)影(ying)(ying)(ying)(ying)(ying)、墻面(mian)壁投(tou)(tou)(tou)(tou)(tou)影(ying)(ying)(ying)(ying)(ying)顯(xian)示(shi)等，參觀者以(yi)自然(ran)的(de)手勢(shi)動(dong)(dong)(dong)作與(yu)大屏幕投(tou)(tou)(tou)(tou)(tou)影(ying)(ying)(ying)(ying)(ying)的(de)三維(wei)模(mo)型(xing)交互作用，多方位多層次瀏覽查詢(xun)，從而快速(su)地獲取簡(jian)明、精確、優美、逼真的(de)動(dong)(dong)(dong)態信息。
