| 1. | Hidden Image Stereograms | stereograms with hidden objects which are not obvious until the stereogram is revealed.
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| 1.1. | Random Dot Stereogram (RDS, SIRDS) | hidden depth is encoded by random dots.
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| 1.2. | Patterned Stereogram | hidden depth is encoded by a pattern, which could be any picture or drawing.
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| 1.3. | Mapped Texture Stereogram (MTS) | hidden depth is encoded by a texture, which is also used for texturing the hidden objects.
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| 1.4. | Contour Stereogram | hidden depth is encoded by contours of hidden objects.
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| 1.5. | Stained Glass Stereogram | painted Contour Stereogram.
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| 2. | Object Array Stereograms | repetitive objects become three dimensional or appear on different levels of depth.
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| 2.1. | 2D Floaters (Wallpaper) | flat objects appear on different levels of depth.
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| 2.2. | 3D Floaters | flat objects become three dimensional and could be on different levels of depth as well.
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| 2.3. | Solid Array | repetitive and seamless pattern becomes three dimensional.
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| 2.4. | Cloud Stereogram | set of small objects (clouds) form a hidden object.
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| 3. | Text Stereogram (ASCII) | a text document which works like a stereogram.
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| 3.1. | Hidden Text Stereogram | hidden image is formed from a text pattern.
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| 3.2. | Text Array Stereogram | repetitive words appear on different levels of depth.
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| 3.3. | Pop-up Text Stereogram | some letters pop up and form text or sentence you can read.
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