High
Resolution Animated Content Additional data supporting analysis
of April 2001 Image of the Face on Mars
Mark J. Carlotto
Viking - MGS DEM Comparison - Flickers between July
1976 Viking frame 70A13 (left) and its digital elevation model (DEM)
computed by shape-from-shading (right), and the new April 2001 MGS
image (left) and its DEM (right) computed by shape-from-shading
(SFS). Consistency of Viking and MGS SFS results are evident.
(Dynamic GIF)
Raw - Orthorectified MGS Comparison - Shows the two
images and their horizontal axes of symmetry. In the orthorectified
image four circular features line up along the horizontal axis of
symmetry. (Dynamic GIF)
Orthorectified and Flipped MGS - Flickers between the
orthorectified MGS image and its mirror image. Images are shifted so
that their horizontal axes of symmetry coincide. Multiple points of
symmetry within the Face are evident. (Dynamic GIF)
3-D Perspective Views from Around the Face -
Generated using shape-from-shading, views at 20 deg. increments
around the Face at zenith angles of 0, 15, 30, 45, and 60 deg. are
provided. Presence of sand dunes on the right side of Face are best
seen looking down at the Face from below the chin. ( 5.7 Meg, Quicktime VR)
Coordinated Geometrical Fit Sequence - Shows
successively refined 2-D geometrical models of the Face. Figure of
merit (FOM) of the fit is shown in the upper left corner and
decreases as the model is refined. The FOM is the sum of three
differences: 1) between the height to width ratio of the ABCD
rectangle framing the Face and 4/3, 2) between the ratio of the
major to minor axes of ellipse e4 and 4/3, and 3) between the center
of the ABCD rectangle and the intersection of the horizontal and
vertical axes of symmetry of the Face.
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