Gallery of Direct-Global Separation Results
Here, we show examples of separating direct and global components of light transport. In each case, shifting high-frequency binary stripes were used to illuminate the scene. By clicking on each of the thumbnail images shown below, you can see the corresponding high resolution image.
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Grapes
Method: Binary Stripes

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Scene with subsurface scattering
The grapes are translucent, resulting in subsurface scattering.
 

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Input sequence (conventional SL)

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Input sequence (diffuse SL)
Linear diffuser preserves the high-frequency nature of the illumination, as can be seen in the input sequence of diffuse SL. Because of this, the direct and global components can be separated.
 

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Direct component (conventional SL)

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Direct component (diffuse SL)

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Global component (conventional SL)

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Global component (diffuse SL)
The direct-global separations with conventional and diffuse SL are qualitatively similar. There are some differences. The specularities in the direct component with conventional SL are stronger and concentrated. In comparison, the specularities in the direct component with diffuse SL have a 1D spread.
 
Blocks
Method: Binary Stripes

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Scene with interreflections

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Direct component (conventional SL)

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Direct component (diffuse SL)

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Global component (conventional SL)

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Global component (diffuse SL)
Notice the strong shadows in the direct component without the diffuser. In comparison, the shadows are softer in the direct component with the diffuser.