Determination of intrinsic metric in the images

There are many Fotos available by now which were taken of the mesa from diverse directions.


Many features can be identified on several fotos. If the distance between two features is known, it will be  possible to prove the resolution and to reveal distortions. The distances must be determined with a foto which was taken from the zenith and which has the highest resolution. It is a basis for a calibration od other Fotos.

Framing points as a reference for leveling features

Surounding points lying nearly on the same level shall define a plane of reference.

18-point frame

On two selected fotos the same 18 features can be iden- tified. It is assumed that they have the same level on the surface. The first foto has been taken from zenith and has a resolution of only 30 cm per pixel, whereby the distan- ces between the 18 frame points are known. In the second foto distortions can be determined with it and be taken into account for further calculations. 

Meshing: Construction of 3D-models

A point cloud is conntected to a net of triangles and the foto is projected onto its surface.


By measuring the shift of a feature in a foto taken from a perspective view it is possible to deduce its height. Beside (x,y)-coordinates in the plane this way features get a height z. Thus each feature gets 3d-coordinates (x,y,z) in space and form a point cloud. The points are connected to net of triangles, onto which the foto is projected.


Posted in Paragraph

Beside the impressive, 25 km high shield volcano Olympus Mons on Mars there are many more famous Mountains and Regions. Many of the mountains, valleys and regions on Mars have been exacty surveyed by photogrammetry. The 3d-models of regions are called digital terrain models (DTM), with which pictures from every perspective can be computed or also fly-over videos.

This does not hold true for the so-called 'Face of Mars'. Admittedly there are land relief data and images of this mountain, but in diverse ranges they all have unvalued details or untreated erros. As an oronym we continue to use the term 'Face of Mars'. As an example für pareidolia the Image from Viking Orbiter in 1976 is the wrong Image, because on the first fotos the mountain indeed looked like face lying half in shaddow. On recent fotos this is completly different, they do not show the appearance of a face. Only people who mean to identify a face on newer fotos may labour under pareidolia. But this mesa has other features which are not usual for natural mountains.

This project is aiming at a precise 3d-model for the so-called 'Face of Mars' in the frame of world space week 2015. Now the model consists of 126 Points in 3d space and our aim is to increase this number up to 1000. With such a precise 3d-model analyses can be done better. For example, it is possible to illuminate the blank land relief from different directions and to look what impressions the play of light and shadow leaves in the human visual apparatus, and to evalue this with the knowledge of optical illusions.

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We are pleased to welcome you on our homepage. Be informed on our online presence about research and results regarding the famous mountain on Mars in Cydonia Mensae region. As an oronym we continue to use the term 'Face of Mars', although the mesa only looked on the first fotos taken from it like face, lying half in shadow. These pictures are not a good example for pareidolia, the appearance of a face on the very first pictures is obvious. This does not apply for newer fotos, they do not show the appearance of a face. Only people who mean to identify a face on newer fotos may labour under pareidolia. But nevertheless the mesa has more properties, which are not usual for naturally formed mountains ...

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