News release

Date: 23rd November 2010

Plextek’s image processing enhancements help medical applications exploit HD

Tackling the common technical challenges faced when developing mega-pixel video solutions for medical applications

Cambridge, UK, 23rd November 2010: Plextek, the Cambridge-based electronics and communications design consultancy, today announced enhancements to its image processing suite designed to help medical device manufacturers overcome the technical challenges involved in developing mega-pixel video solutions for medical applications. These enhancements allow medical device manufacturers to create more affordable, efficient and intelligent High Definition (HD) video imaging solutions that are better tailored to individual medical use cases.

Drawing on its strong capability in video imaging, including extensive image processing software and hardware design expertise, Plextek has the skill and experience to help address the many special challenges that arise when introducing HD into medical imaging applications. These include image compression, power consumption, managing & storing images, data bandwidth for real time video transmission and camera miniaturisation.

Standard techniques such as MPEG2 and H.264 fail to address the image compression requirements of medical applications, so Plextek has developed adaptive processing techniques that apply different levels of compression to different parts of an image based on specific parameters. Key information can be retained in high definition within an area of importance; a heart valve for example or specific parts of the image showing certain texture statistics such as those associated with tumours. Other image areas are then compressed to a lower definition. This retains the inherent benefits image compression brings by reducing the overall amount of data being handled whilst still retaining the key advantages of HD.

For real-time video interaction, system latency can also be a problem. Standard video compression algorithms typically achieve high data compression but at the expense of processing delay. Making use of HD in medical applications requires real time evaluation and makes control more difficult. Plextek’s low latency image compression techniques mitigate latency issues and provide enhanced system performance.

Power consumption is a serious problem for battery-powered equipment as higher resolutions require higher power processing hardware. Battery technology has not kept pace with these requirements so Plextek has developed low power designs that perform pre-processing functions in an efficient manner within the camera itself, saving power and improving performance. By analysing trade-offs across the whole system, Plextek has been able to help medical camera manufacturers successfully minimise the overall energy requirements of video systems.

The massive increase in storage requirements required by HD can also be an expensive problem. This can be addressed by automated, context-sensitive storage schemes that rely on event detection to determine whether a particular sequence of images is useful to store, and can lead to significant savings.

Graham Tootell, Project Engineer in Plextek’s Image Processing group comments: “Bringing HD resolution to medical equipment is undoubtedly extremely advantageous to medical staff and their patients. It enables more accurate diagnosis of patient symptoms and significantly enhances non- invasive patient monitoring. High definition video feeds in operating theatres allow better assessment of different tissue types and the detailed recording of surgery for post operative analysis and training.

“All these advances are feasible today but bring with them new and complex technical challenges that equipment designers are struggling to overcome. Plextek has devoted its image processing capability towards developing high performance mega-pixel video technology to tackle these challenges. We are working with leading medical innovators to bring products to market that will radically improve the way that medicine is practiced and help drive medical imaging equipment forward to the next evolutionary step.”

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About Plextek Limited
Based near Cambridge, UK, Plextek was established in 1989 and has grown to be one of the largest independent electronics and communications design facilities in Europe. It provides innovative design of complex communication systems and devices for a wide range of companies from technology start-ups to multi-national engineering conglomerates, and also undertakes supply of the finished products.

Plextek operates across the telecoms, automotive, medical and defence sectors. In addition to supplying a range of its own security products (Blighter Ground Surveillance Radar), the company prides itself in providing an outsourced resource of highly experienced, multidisciplinary engineering skills to organisations that require challenging electronics design projects to be delivered within competitive time and cost constraints. Business services include strategic consulting, technology studies, product and concept design, introduction to manufacture and full contract manufacturing.

Its 300 clients encompass a range of global organisations, from BAE Systems, the UK MoD, QinetiQ and Raytheon to TDK and Sony. Plextek also supplies automotive security products to both LoJack Corporation and TRACKER Network (UK) Ltd.

Last year Plextek became the proud recipient of two Queen’s Awards for Enterprise, for Innovation and International Trade. Plextek was also named ‘Consultancy of the Year’ at the British Engineering Excellence Awards (BEEAs), and ranked in the Deloitte Technology Fast 500 EMEA. In 2010 it was named Business of the Year at The Cambridge Evening News Business Excellence Awards.


Media Contacts:
Johanna Hughes
Plextek Ltd
Tel: +44 1799 533200
Email: jlh[at]plextek[dot]

Chris King/Darren Willsher
Tel: +44 20 8408 8000
Email: plextek[at]eml[dot]com

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