圖像融合作為一種有效的信息融合技術, 已經廣泛用于軍事、遙感、機器視覺和醫療診斷等領域。這里研究了多傳感器圖像 融合效果的客觀評價方法, 其中包括均方根誤差、平均誤差、灰度標準差、熵、熵差、交叉熵、互信息和空間頻率。將加權平均、金字 塔、小波變換三種方法用于多傳感器圖像的融合, 實驗結果表明客觀評價結果與視覺評價的結果是一致的, 是一種行之有效的評價 手段。
關鍵詞　圖像融合　小波變換　金字塔變換　客觀評價
Abstract　Being an eff icien t m ethod of info rm at ion fu sion, im age fu sion has been u sed in m any f ields such as m ach ine vision, m edical diagno sis, m ilitary app licat ion s and remo te sen sing. The ob ject ive evaluat ion of fu sed im age is studied. The ob ject ive evaluat ion m easu res are roo t of m ean square erro r, m ean erro r, standard devia2 t ion, en t ropy, en t ropy difference, cro ss en t ropy, m u tual info rm at ion and spat ial f requency. Th ree im age fu2 sion algo rithm s, w eigh ted m ean, L ap lacian pyram id based, w avelet decompo sit ion based, are app lied to fu se several im ages. Experim en tal resu lt s show that conclu sion s of ob ject ive evaluat ion co incide w ith tho se of hu2 m an vision evaluat ion. So the ob ject ive evaluat ion m easu res are feasib le and eff icien t.
Key words　Im age fu sion　W avelet t ran sfo rm 　Pyram id t ran sfo rm 　O b ject ive evaluat ion