Graphics on mobile devices – Visual Computing Lab

Papers published in the 2014 IEEE International Ultrasonics Symposium proceedings

Thomas Kim Kjeldsen — Thu, 27 Nov 2014 08:08:10 +0000

In our Advanced Technology Foundation project “FutureSonic”, we recently presented two papers at the 2014 IEEE International Ultrasonics Symposium together with our research partners at the Technical University of Denmark.

The first paper [1] presents how ultrasound images can be computed efficiently on GPUs and on multicore CPUs that support Single Instruction Multiple Data (SIMD) extensions. We were able to accelerate a reference implementation in C from around 700 ms/frame to 5.4 ms/frame using the same multicore CPU. The speedup was achieved primarily by optimizing the memory access patterns and by utilizing AVX instructions. On a high-end GPU the fastest computation time was less than 0.5 ms/frame.

The results obtained above were utilized in the second paper [2] where the GPU implementation was ported to mobile devices. We showed that modern mobile GPUs provide enough computing power to produce ultrasound images in real-time. Furthermore, we showed that the WiFi throughput is sufficient for real-time reception of raw data from a wireless ultrasound trandsucer.

References
[1] Synthetic Aperture Sequential Beamforming implemented on multi-core platforms
IEEE International Ultrasonics Symposium (IUS), p2181 – 2184 (2014)

[2] Implementation of synthetic aperture imaging on a hand-held device
IEEE International Ultrasonics Symposium (IUS), p2177 – 2180 (2014)

3D track data visualization

Jens Rimestad — Fri, 06 Dec 2013 11:40:56 +0000

We have just released a 3D graph visualization javascript tool for visualizing position based height data incapsulated in a webpage.
At construction time an array of longitude, latitude and altitude is passed to the tool, which generates the basic graph. In an additional argument static markers can be added to the graph. These markings can be interval markings placed several times along the distance the graph represent or just once. Markings can be a custom image or a default dot if no image is set. Another static feature is segments, which can be used to highlight parts of the graph with another color.

After constructing the graph dynamic markings can be added and modified when needed. These marking is in the example meant to represent runners or bikers and are updated based on time and speed of the runner.

It is possible to register for events triggered when pressing dynamic markings or segments.

You can find an interactive demo here.

The visualization is crafted using THREE.JS and works in both canvas and webGL mode.

The tool was created for Sportstiming and funded by Forsknings og Innovationsstyrelsen.

Interactive 3D layer on top of reality!

Jens Rimestad — Tue, 29 Oct 2013 08:47:08 +0000

Augmented reality is your digital layer on reality. With augmented reality you have new opportunities to develop your products, to involve your users and to create branding.

The National Gallery of Denmark, Redia and the Alexandra Institute developed an app that could bring a Hammershøi painting to life.

We have been involved right from the start and we take part in the latest research. Therefore you will be 3-5 years ahead of your competitors if you collaborate with us.

Better Innovation

Jesper Mosegaard — Thu, 19 Apr 2012 07:49:38 +0000

(In danish)

Er du i et firma indenfor IT, visuel indholdsproduktion, computergrafik eller smartphones ? Vi har brug for dine kommentarer på vores forslag til at opbygge ny viden og serviceydelser til gavn for danske virksomheder indenfor disse områder. Dit indlæg kan være ligefra “det støtter vi” til uddybende forklaring og kritik – og din mening er vigtig i forhold til at sikre en finansiering af vores aktivitetsforslag. På forhånd tak

It værktøj til effektiv og højkvalitets visuel indholdsproduktion

Softwareudvikling til fremtidens heterogene processor

Næste generations smartphone apps til professionelle anvendelser

New IPad app RenderDuck

Jens Rimestad — Mon, 03 Jan 2011 09:34:28 +0000

We have just released our first IPad application – RenderDuck.

The app is based on intern tests of shader capabilities and UI on the IPad, but now we were at it we made the tests into a small free app.