Image Processing

 

  

Basic image enhancement

Astronaut photograph of the Nile Delta. Colour correction and contrast enhancement.
Composite images

In this composite, a Magellan radar image of Venus is combined with topography data. Warm tones (red and yellow) represent elevated terrain and cool tones (blue and green) represent low lying areas.

The image shows a circular structure called a corona. It has concentric fractures aligned with its encircling trough and central elevated region.

Small dome-shaped volcanoes (1 km to 2 km across) can be seen in the northern part of the corona interior and the elevated southern section.

For scale, the black data gaps are each 20 km across.

Shaded-relief maps

Light and shadow work as cues to depth. They aid visualisation of topography as in this rendering of the Scarpellini Quadrangle on Venus.

The large circular structures are coronae. The elevated region to the northwest is part of Manatum Tessera, thought to have formed by repeated extension and compression of the surface.

The area shown is about the same size as Brazil. The region is illuminated from the northwest.
3D Overlays
Simple 3D overlay created from a Magellan SAR image 'draped' over Magellan topography data. Such overlays are useful for exploring the relationship between geological structures picked out in radar images and topography.
 
The circular structure to the left of the image is an unamed corona, about 100 km across, in the northwest of the Scarpellini Quadrangle on Venus. The floor of the corona is flooded with radar-bright lava, indicating that it has a rougher surface than the surrounding radar-dark plains.

 

Restoration    


Old pictures brought to life. 'Blackbird' - an original.

Panoramas stitched. Winter on Dartmoor.

Hidden detail revealed. Viking orbiter image of the surface of Mars.

Part of Thaumasia Planitia (Plains) which is south of the Mars' huge Vallis Marineris (Mariner Valley) canyon system. The large craters are about 20 km across. The ridges, known as dorsa, are 'wrinkle' ridges formed by compression of plains surface. Original image (upper left) from the USGS Mars digital image map.

Tears, creases, spots and other blemishes removed. Building dreadnaughts c.1900 Family photograph.

...black and white photographs coloured, images manipulated (remove unwanted elements or people from your pictures), special effects, and more...