Convolutional Neural Network for Oil Spill detection in Synthetic Aperture Radar Satellite Images


Growing Cancer Cells & Coronal Mass Ejections Are Visually Similar



Using solar and astronomical image processing techniques and mathematical theory we have developed novel image analysis techniques to track the growth of tumours and other cell-based structures, which can be crucial for advancements of therapeutics to treat diseases such as cancers.

The visual similarities between coronal mass ejections and the outward invasion of cells from a tumour spheroid are striking. This study aims to help us better understand changes in the tissue architecture which are associated with tumour growth.

source: Departments of Physics, Aberystwyth University

Snow in the Desert


source: NASA Earth Observatory

via [NASA Earth Observatory]

Cognitive Biases visual




Global SRTM Map


The following is an 20x downsampled global Shuttle Radar Topography Mission (SRTM)  map made with Python and Basemap.

Full resolution can be found on wikimedia.

One can notice the depth of the ocean floor, on a global scale, ranges between -2000 and -6000 meters. In some regions though like the Pacific exceed this range and reach 11 kilometers below the sea surface. One such region is the deepest point on Earth, the Mariana trench as shown below followed by a map for a perspective of its location.


Location of the Mariana trench. Wikimedia commons.

Credits: The SRTM dataset used was provided by IFREMER.

Radio interference around & Salinity in the Mediterranean


When ESA’s SMOS satellite was placed in orbit in 2009, it transpired that its signal was being interrupted by numerous illegal transmitters around the world. However, by working with national frequency protection authorities, 75% of these transmitters have now been shut down. Nevertheless, this is a laborious process and some regions, such as the Libyan coast and the eastern Mediterranean Sea, remain contaminated where mitigation strategies have not yet been successful. Source: ESA

Thanks to new processing techniques, information from ESA’s SMOS mission can be used to map salinity in the surface waters of the Mediterranean Sea. For example, daily maps can be created using DINEOF, which reduces noise and other sources of contamination. The image, which captures salinity on 3 March 2013, shows the fresher water from the Atlantic Ocean flowing through the Strait of Gibraltar into the Mediterranean Sea. Source: ESA

Flat plate vortex formation at low Reynolds number



Robbie Stevens: Flat plate vortex formation at low Reynolds number

Robbie Stevens: Flat plate vortex formation at low Reynolds number

The Photograph shown is the raw image with no alterations. The image depicts a flat plate wing, which is simultaneously pitching and translating rapidly over a short distance through water at a Reynolds number of 10,000. This work is targeted towards understanding the aerodynamics of small insects with an intended application for Micro-Air Vehicles. The vortices are visualised by injecting a dye composed of milk and water. The milk has good reflective properties and is neutrally buoyant so follows the real flow faithfully. The inspiration for using milk came while pouring milk into a cup of tea at breakfast one morning! The photograph was taken by myself using a Nikon D7000 digital SLR camera, with the shutter speed and ISO adjusted to maximise the light entering the camera and allow the vortex structures to have a high contrast against the background. There are reflections of the vortex structures on the surface of the wing and some air bubbles are also visible on the dye injection needle on the wing’s surface.

via Flickr