電子航圖在飛行仿真領(lǐng)域有著重要應(yīng)用，然而由于局部紙質(zhì)航圖尺寸、來源及掃描設(shè)備等因素的影響，掃描得到的各個(gè)子航圖顏色不一致，嚴(yán)重影響航圖的整體效果。因此本文重點(diǎn)討論了電子航圖的顏色校正問題，利用相鄰子航圖間的重疊區(qū)域，采用線性映射變換的方法，在RGB、YIQ、YUV、HIS 4種顏色空間下對(duì)電子航圖進(jìn)行校正和比較，實(shí)驗(yàn)結(jié)果表明采用YIQ模型校正的視覺效果較好。

　　Abstract:

　　Electronic chart has important application in the field of flight simulation. The colors of the scanned sub chart differ from each other due to the partial paper chart’s size， source， scanner and so on， which has a strong impact on the visual effect of the whole chart. The paper elaborates on the color correction of electronic chart. The contiguous sub charts’ overlapped area and linear mapping transform is used to correct electronic chart in the RGB， YIQ， YUV， HIS space. The experiment result shows that the YIQ model has better visual effect.