Welcome!

News Feed Item

Fujitsu Develops Technology to Recognize Patient Status Using a Camera

Lightens nursing workload in hospitals and care facilities

Tokyo, May 13, 2014 - (JCN Newswire) - Fujitsu Laboratories Ltd. announced the development of a technology that uses a camera to accurately recognize the status of patients, detecting activities such as sitting up in bed, getting out of bed, or moving in bed.

There are instances in which patients in hospitals or care facilities get out of bed to walk around without nurses realizing it, then slipping and falling. They may also be in too much pain to sleep, which nurses might be late to recognize. An existing technique that uses sensors to detect the pressure of bodyweight does not always work well, giving a false alarm response to a patient just turning over while sleeping. Therefore it requires nurses to make frequent checks.

Fujitsu Laboratories has developed a technology that recognizes and tracks the patient's head with a camera, accurately recognizing when the patient sits up or gets out of bed, and also a technology that visualizes patient behavior that demands wa nurse's attention.

These technologies help hospitals and care facilities provide a high level of patient protection while lightening the workload on nurses.

These technologies are being exhibited at Fujitsu Forum 2014, running May 15-16 at the Tokyo International Forum in Tokyo. Details of this technology are being presented at the SSII2014 Image Sensing Symposium, opening June 11 at Pacifico Yokohama.

Background
A nurse will typically conduct rounds to check on patients at hospitals or care facilities, but patients can get out of bed and go wandering or slip and fall when the nurse's attention is focused elsewhere, or may be in too much pain to sleep. Sometimes it can take time before the nurse notices any of these situations.

The existing technique to detect when a patient has sat up or gotten out of bed relies on sensors that detect the pressure of bodyweight. But this approach has some problems. Sometimes patients will intentionally avoid the sensor so that it does not react when they get out of bed. In addition, the sensor cannot distinguish when the patient is turning over while sleeping, or when movements by the nurse are triggering it, resulting in false alarms as the sensor cannot identify the patient's actual status. Even with these sensors, nurses still need to make frequent checks, and if anything their workload may be higher.

Issues

Other than sensors that detect pressure and movement, one possible method is to use a camera to capture images of a patient, use existing object-recognition technologies to recognize the patient's head, recognize when the patient sits up or gets out of bed based on the head's position, and calculate the scale of movements on the bed to detect when the patient can sleep or not, or other movements. This could lighten the nurse's workload while providing 24-hour monitoring, but it presents the following issues.

1. Overlooking patient sitting up or getting out of bed due to poor head-recognition accuracy

Typical object-recognition technology is programmed with data on multiple heads as learned data so that it can recognize heads with different shapes, hairstyles, orientations, and expressions. The captured image of a head is compared to the learned data to pick the head out of the image, but in many cases, these technologies will mistakenly identify pillows and the like as heads, and overlook the patient sitting up or getting out of bed.

2. Unable to quickly apprise nurse of behaviors demanding attention (sleeplessness, restiveness)

Normal patient behavior will include movements like turning over while sleeping. Existing technology does not do a good job of distinguishing normal patient behaviors from those demanding a nurse's attention.

About the Technology

Fujitsu Laboratories has developed two technologies that, combined, make it possible to monitor patients visually. The first is a sensing technology that recognizes the patient's head and tracks it to recognize when the patient sits up or gets out of bed, which can be precursors to actions such as wandering or slipping or falling. The second is a technology that detects and visualizes conditions such as restiveness or sleeplessness, which demand further attention.
Increasing the detection accuracy of movements such as sitting up and getting out of bed, and of behaviors that demand attention, has made it possible to quickly grasp the patient's condition and lighten the nurse's workload.

Key features of the technologies are as follows

1. Selects learned data depending on patient states

The technology categorizes the state of a patient in bed into five categories depending on posture, and has defined a state-transition diagram that relates them. The appearance of the patient's head depends on which state the patient is in, so Fujitsu Laboratories defined the head detection area for each state, and generated learned data limited to the appearance of the head in those positions (such as orientation and size).

The recognition process also uses learned data where the next likely states are limited by the current state, based on the state-transition diagram. Selecting the learned data used in the recognition process in response to the patient's state results in highly accurate head recognition.

2. Reduces false positives using motion information

Even with the selection of learned data based on patient status, the potential remains to incorrectly recognize pillows as heads. To correct for that, the technology observes points that will always move when the patient sits up or stands up, and will identify multiple regions in the image that might be the head. It will then confirm if it really is the patient's head or not when its movement is considered to be sitting up or standing up. If the candidate never moves or the movement stops after confirmation, the process will return to what it considers to be the patient's head and continue measuring all items that are candidates for the head. This way, even if a pillow is incorrectly identified as a head, the fact that it will move in ways that differ from sitting up or standing up will quickly rule it out as a head, and when the patient moves, the correct candidate will be recognized.

3. Visualizes patient behaviors demanding attention
With advice from medical practitioners, Fujitsu Laboratories defined ordinary behaviors and those demanding attention as follows.

These two kinds of behavior are identified based on such factors as the magnitude and frequency of the patient's movements.

The visualization displays those patient movements that are judged to be departures from normal sleeping motions with dots, using color to indicate the magnitude of the movements from great to small, and increasing the size of the dot to indicate the frequency of the detected movement over a fixed period of time. This makes it easier to understand those patient behaviors demanding attention.

Results

With the cooperation of Tamagawa Hospital(1) and the consent of patients and their families, Fujitsu Laboratories conducted a field trial to detect movements and visualize behaviors using this technology.

To test sensing of sitting up and getting out of bed, two patients were observed for four days each. Rising movements were observed over a total of 184 hours of observation using both the conventional pressure sensors and the new technology. The new technology was found to perform better.

For behavior visualization, three patients were observed over a total of 176 hours. The visualization of behaviors demanding attention was found to perform with 91% accuracy.

Results of this behavior visualization were displayed at the nursing station, allowing nurses to easily monitor patient movements without going on rounds, resulting in a high standard of patient protection for the hospital or care facility while lightening the workload on nurses.

Future Plans

Fujitsu Laboratories is working to link the patient-monitoring system to an emergency-alert system for nurses and electronic medical record system with a goal of commercial implementation in fiscal 2015. The company is also continuing to develop this technology with the aim of expanding its scope of application to include residential services for the elderly and other in-residence nursing and care.

Notes:
(1) Tamagawa Hospital:
Official name "Nissan Tamagawa Hospital." Director: Akira Nakashima. Located in Setagaya-ku, Tokyo.

About Fujitsu Limited

Fujitsu is the leading Japanese information and communication technology (ICT) company offering a full range of technology products, solutions and services. Approximately 170,000 Fujitsu people support customers in more than 100 countries. We use our experience and the power of ICT to shape the future of society with our customers. Fujitsu Limited (TSE: 6702) reported consolidated revenues of 4.4 trillion yen (US$47 billion) for the fiscal year ended March 31, 2013 For more information, please see www.fujitsu.com.



Source: Fujitsu Limited

Contact:
Fujitsu Limited
Public and Investor Relations
www.fujitsu.com/global/news/contacts/
+81-3-3215-5259


Copyright 2014 JCN Newswire. All rights reserved. www.japancorp.net

More Stories By JCN Newswire

Copyright 2008 JCN Newswire. All rights reserved. Republication or redistribution of JCN Newswire content is expressly prohibited without the prior written consent of JCN Newswire. JCN Newswire shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon.

Latest Stories
WebRTC adoption has generated a wave of creative uses of communications and collaboration through websites, sales apps, customer care and business applications. As WebRTC has become more mainstream it has evolved to use cases beyond the original peer-to-peer case, which has led to a repeating requirement for interoperability with existing infrastructures. In his session at @ThingsExpo, Graham Holt, Executive Vice President of Daitan Group, will cover implementation examples that have enabled ea...
Kubernetes is a new and revolutionary open-sourced system for managing containers across multiple hosts in a cluster. Ansible is a simple IT automation tool for just about any requirement for reproducible environments. In his session at @DevOpsSummit at 18th Cloud Expo, Patrick Galbraith, a principal engineer at HPE, discussed how to build a fully functional Kubernetes cluster on a number of virtual machines or bare-metal hosts. Also included will be a brief demonstration of running a Galera M...
IoT offers a value of almost $4 trillion to the manufacturing industry through platforms that can improve margins, optimize operations & drive high performance work teams. By using IoT technologies as a foundation, manufacturing customers are integrating worker safety with manufacturing systems, driving deep collaboration and utilizing analytics to exponentially increased per-unit margins. However, as Benoit Lheureux, the VP for Research at Gartner points out, “IoT project implementers often ...
SYS-CON Events announced today that Tintri Inc., a leading producer of VM-aware storage (VAS) for virtualization and cloud environments, will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Tintri VM-aware storage is the simplest for virtualized applications and cloud. Organizations including GE, Toyota, United Healthcare, NASA and 6 of the Fortune 15 have said “No to LUNs.” With Tintri they mana...
The Jevons Paradox suggests that when technological advances increase efficiency of a resource, it results in an overall increase in consumption. Writing on the increased use of coal as a result of technological improvements, 19th-century economist William Stanley Jevons found that these improvements led to the development of new ways to utilize coal. In his session at 19th Cloud Expo, Mark Thiele, Chief Strategy Officer for Apcera, will compare the Jevons Paradox to modern-day enterprise IT, e...
SYS-CON Events announced today the Enterprise IoT Bootcamp, being held November 1-2, 2016, in conjunction with 19th Cloud Expo | @ThingsExpo at the Santa Clara Convention Center in Santa Clara, CA. Combined with real-world scenarios and use cases, the Enterprise IoT Bootcamp is not just based on presentations but with hands-on demos and detailed walkthroughs. We will introduce you to a variety of real world use cases prototyped using Arduino, Raspberry Pi, BeagleBone, Spark, and Intel Edison. Y...
Complete Internet of Things (IoT) embedded device security is not just about the device but involves the entire product’s identity, data and control integrity, and services traversing the cloud. A device can no longer be looked at as an island; it is a part of a system. In fact, given the cross-domain interactions enabled by IoT it could be a part of many systems. Also, depending on where the device is deployed, for example, in the office building versus a factory floor or oil field, security ha...
Is your aging software platform suffering from technical debt while the market changes and demands new solutions at a faster clip? It’s a bold move, but you might consider walking away from your core platform and starting fresh. ReadyTalk did exactly that. In his General Session at 19th Cloud Expo, Michael Chambliss, Head of Engineering at ReadyTalk, will discuss why and how ReadyTalk diverted from healthy revenue and over a decade of audio conferencing product development to start an innovati...
Fifty billion connected devices and still no winning protocols standards. HTTP, WebSockets, MQTT, and CoAP seem to be leading in the IoT protocol race at the moment but many more protocols are getting introduced on a regular basis. Each protocol has its pros and cons depending on the nature of the communications. Does there really need to be only one protocol to rule them all? Of course not. In his session at @ThingsExpo, Chris Matthieu, co-founder and CTO of Octoblu, walk you through how Oct...
SYS-CON Events announced today that Bsquare has been named “Silver Sponsor” of SYS-CON's @ThingsExpo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. For more than two decades, Bsquare has helped its customers extract business value from a broad array of physical assets by making them intelligent, connecting them, and using the data they generate to optimize business processes.
Whether they’re located in a public, private, or hybrid cloud environment, cloud technologies are constantly evolving. While the innovation is exciting, the end mission of delivering business value and rapidly producing incremental product features is paramount. In his session at @DevOpsSummit at 19th Cloud Expo, Kiran Chitturi, CTO Architect at Sungard AS, will discuss DevOps culture, its evolution of frameworks and technologies, and how it is achieving maturity. He will also cover various st...
Identity is in everything and customers are looking to their providers to ensure the security of their identities, transactions and data. With the increased reliance on cloud-based services, service providers must build security and trust into their offerings, adding value to customers and improving the user experience. Making identity, security and privacy easy for customers provides a unique advantage over the competition.
There are several IoTs: the Industrial Internet, Consumer Wearables, Wearables and Healthcare, Supply Chains, and the movement toward Smart Grids, Cities, Regions, and Nations. There are competing communications standards every step of the way, a bewildering array of sensors and devices, and an entire world of competing data analytics platforms. To some this appears to be chaos. In this power panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, Bradley Holt, Developer Advocate a...
SYS-CON Events announced today that Niagara Networks will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Niagara Networks offers the highest port-density systems, and the most complete Next-Generation Network Visibility systems including Network Packet Brokers, Bypass Switches, and Network TAPs.
SYS-CON Events announced today that Secure Channels will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. The bedrock of Secure Channels Technology is a uniquely modified and enhanced process based on superencipherment. Superencipherment is the process of encrypting an already encrypted message one or more times, either using the same or a different algorithm.