Hybrid ImagesHybrid Images

Aude Oliva & Antonio TorralbaAude Oliva & Antonio TorralbaMassachusetts Institute of TechnologMassachusetts Institute of Technolog

yyPhilippe G SchynsPhilippe G Schyns

University of GlasgowUniversity of Glasgow

The design of hybrid imagesThe design of hybrid images

• Combining two images (ICombining two images (I11 and I and I22))

– hybrid images (H = Ihybrid images (H = I11‧G‧G11 +I +I22 ‧ (1-G ‧ (1-G22))))

22

22

22

1,

yx

eyxG

The perception of hybrid The perception of hybrid imagesimages

Contrast Sensitivity Contrast Sensitivity FunctionFunction

AlignmentAlignment

a

b

c

a’

b’

c’

Experimental Results (1/3)Experimental Results (1/3)

Experimental Results (2/3)Experimental Results (2/3)

Experimental Results (3/3)Experimental Results (3/3)

ConclusionsConclusions

•利用三角網格進行利用三角網格進行 AlignmentAlignment 時，若影像時，若影像差異太大時，將會造成影像嚴重扭曲。 差異太大時，將會造成影像嚴重扭曲。

• Gaussian filter Gaussian filter 模糊結果會產生模糊結果會產生 ringing efringing effectfect 問題，可進一步改進結果。問題，可進一步改進結果。

• Gaussian filterGaussian filter 之參數調整，可能隨著不同之參數調整，可能隨著不同影像而改變。影像而改變。