3D Image Enhancements
By default, 3D images do not respond to lighting. The color values are purely determined by the given color function.
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img3d = Image3D[data, "Byte", options, ImageSize -> 400]
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Turning on volume lighting can help to highlight surface details. In this case, a directional light is added pointing into the plane of the screen, and specularity is added to the image object.
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ImageCrop[
Show[Graphics3D[Specularity[Orange, 3], Background -> Black],
Image3D[img3d, Method -> {"VolumeLighting" -> True}], options,
Lighting -> {{"Directional", White, ImageScaled[{0, 0, 2}]}},
ImageSize -> 700], {410, 410}]
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Grainy images can be further enhanced by interpolating the values.
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fine = ImageCrop[
Show[Graphics3D[Specularity[Orange, 3], Background -> Black],
Image3D[img3d,
Method -> {"VolumeLighting" -> True,
"InterpolateValues" -> True}], options,
Lighting -> {{"Directional", White, ImageScaled[{0, 0, 2}]}},
ImageSize -> 700], {410, 410}]
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Visualize the transition from the original to the interpolated and highlighted image.
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In[7]:=

Animate[Overlay[{original, SetAlphaChannel[fine, i]}], {i, 0, 1},
AnimationRate -> 1/3, AnimationDirection -> ForwardBackward]

