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5.1.2 Types of Composition

5.1.2.1 Transparent

In a transparent composition, concentrations of pixels from many different scans tend to produce regions of black color.

Figure 1.18: Camera 1 - Transparent Composition
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Figure 1.19: Camera 2 - Transparent Composition
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5.1.2.2 Opaque Last

In an Opaque Last composition, color pixels from previously painted images are overwritten with pixels from the last scans. In this case, the composited image reflects more detail from the structure closer to the camera, and consequently closer to the outside of the interior of the cathedral.

Figure 1.20: Camera 1 - Opaque Last Composition
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Figure 1.21: Camera 2 - Opaque Last Composition
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5.1.2.3 Opaque First

In an Opaque First composition, color pixels are discarded if a previously painted image has already occupied this pixel's (x,y) coordinate in the composited image. In this case, the composited image reflects more detail from the structure farther away from the camera, and consequently closer to the inside of the interior of the cathedral.

Figure 1.22: Camera 1 - Opaque First Composition
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Figure 1.23: Camera 2 - Opaque First Composition
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