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Proof-of-Concept Portable Imaging System to Study Stroke Recovery and Epilepsy

Thursday, May 17th, 2012

Proof-of-Concept Portable Imaging System to Study Stroke Recovery and Epilepsy

Demonstration of the system components used by the research team, which features the Rolera EM-C2 EMCCD camera

Surrey, BC (PRWEB) April 02, 2012

University of Toronto scientists, consulting with QImaging engineers, have designed a compact, neuroimaging prototype for studying the effects of stroke recovery and epilepsy. Due to its small size, the system is easily adaptable for use in a portable format for continuous monitoring of blood flow to the brain in non-anesthetized animals.

Published in Biomedical Optics Express, University of Toronto Assistant Professor Ofer Levi and colleagues demonstrated how they were able to simultaneously measure two modalities—blood oxygenation and flow speeds—in a single, compact system. The system also allowed them to statistically distinguish between veins and arteries, something never before accomplished. Other scaled-down imaging solutions are limited to tracking a single modality or require the use of multiple complex systems.

“Our goal is to create a smaller, portable version of the system that will allow us to image fully conscious, active animals participating in normal behaviors,” said Levi. “This will enable long-term chronic monitoring of epilepsy dynamics and recovery from stroke in pre-clinical animal studies. Our other objective is to create an instrument that can be used for clinical use in patients.”

Levi simultaneously quantified flow changes in blood vessels and measured dynamics in oxygenation to track neural activity in real time using QImaging’s Rolera EM-C2™ EMCCD camera. The camera’s low read noise allowed Levi to more rapidly detect low light signals with high-sensitivity, enabling him to take advantage of the camera’s extremely high frame rates.

“We were able to show dynamics of flow and oxygenation changes in response to induced ischemia in a wide field of view with speeds that at times exceeded 100 frames per second making it possible to calibrate the entire brain flow map,” said Levi.

Levi chose to work with QImaging’s engineers for their technical expertise and biomedical imaging knowledge. Together, they plan to disseminate the system to other labs conducting similar research.

“Aside from developing and engineering cost-effective imaging solutions, we’re committed to providing our customers with the knowledge and resources they need to successfully conduct their experiments,” said Chris Ryan, associate product manager at QImaging.

A Q&A with Levi on how he and his colleagues devised this single system, dual modality approach, is available on the QImaging website, “Single System Dual-Modality Optical Neural Imaging.”

About QImaging

QImaging designs and manufactures user-friendly CCD, EMCCD, CMOS and Scientific CMOS cameras for life science, machine vision and OEM applications. These affordable and diverse digital imaging solutions offer outstanding versatility, ease of use and reliability. Customers around the world use QImaging cameras to perform quantitative image analysis and acquire high-resolution images for publication. The company offers a comprehensive OEM Camera Program and maintains numerous third-party alliances with software companies and system integrators to consistently deliver imaging solutions and application-specific software that supports a broad range of bioscience and industrial applications. QImaging is headquartered in Surrey, Canada, and is a registered ISO 9001:2008 company. Additional information is available at http://www.qimaging.com.

, Vocus PRW Holdings, LLC.
Vocus, PRWeb, and Publicity Wire are trademarks or registered trademarks of Vocus, Inc. or Vocus PRW Holdings, LLC.

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Tags: Epilepsy, Imaging, portable, ProofofConcept, Recovery, Stroke, study, system
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Low light test – CMOS vs. CCD sensors (Digital cameras)

Tuesday, April 3rd, 2012

I understand these are very different sensors but…..I test the image quality and noise difference between the CMOS sensor in my Canon T1i and the CCD sensor in my Canon SD780is digital cameras. Interesting! The CMOS sensor seems to have much better low light sensitivity. The CCD has many advantages but low light is not one of them.
Video Rating: 2 / 5

READ THE INTRO at STARTUP in THE VIDEO.
Video Rating: 4 / 5

Tags: Cameras, CMOS, Digital, Light, sensors, Test
Posted in CMOS ccd | 49 Comments »

CCD VS CMOS Camera

Monday, January 23rd, 2012

www.spygeeks.net The difference between a CCD image sensor and a CMOS image sensor. See the difference between the images of a CMOS verses a CCD imaging sensor.
Video Rating: 3 / 5

Tags: Camera, CMOS
Posted in CMOS ccd | 9 Comments »

Opteka SSC-10 CCD/CMOS Reusable TAC/GUM Sensor Cleaning Kit for SLR Cameras Reviews

Monday, September 5th, 2011

Opteka SSC-10 CCD/CMOS Reusable TAC/GUM Sensor Cleaning Kit for SLR Cameras

Safely removes dust from CMOS & CCD SLR camera sensors
Compatible with most Digital SLR Cameras
Uniquely designed polyurethane stylus soft tips
Washes easily; Reusable
Kit includes (1) large tip stylus, (1) small tip stylus, and (1) dust removal pad

The Opteka SSC-10 TAC cleaning kit is designed to remove dust build up from CMOS & CCD SLR sensors using uniquely designed polyurethane stylus soft tips. Kit includes (1) large tip stylus, (1) small tip stylus, and (1) dust removal pad.

List Price: $ 59.00

Price:

Opteka SLK-50 Digital SLR CCD/CMOS Cleaning Kit with Wet/Dry Sensor Swabs, Alcohol Pads, Lint-free Cloths & Tin-Oxide Solution

10 Dry Sensor Swabs (SCK-1)
3 Alcohol Cleaning Pads (SCK-2)
10 Ultra-soft Lint-free Cleaning Pads (SCK-3)
5 Pre-moistened Sensor Swabs (SCK-4)
1 oz. Tin Oxide CCD/Camera Cleaning Fluid (SCK-5)

The Opteka SLK-50 SLR/CCD/CMOS Cleaning Kit contains all the essential cleaning tools for your SLR Camera.

Kit Includes:

SCK-1 Dry Sensor Swabs (10 PACK) – Lint free dry swabs designed for cleaning CCD/CMOS chips. May be used with the SCK-5.

SCK-2 Alcohol Pads (3 PACK) – Safe for use on monochrome CCD’s, scanners, optical mirrors and other sensitive electronic and photographic image forming surfaces.

SCK-3 Ultra-soft Lint-free Cleaning Pads (10 PACK) – Applicable for any cleaning need. May be used with the SCK-5.

SCK-4 Pre-moistened Sensor Swabs (5 PACK) – Pre-moistened swabs designed for cleaning CCD/CMOS chips.

SCK-5 Tin Oxide CCD/Camera Cleaning Fluid (1 OZ.) – Leaves now visible residue and is safe for CCD/CMOS chips, optical and imaging surfaces. May be used in combination with the SCK-1 & SCK-3.

List Price: $ 39.99

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Tags: Cameras, CCD/CMOS, CLEANING, Opteka, Reusable, Reviews, SENSOR, SSC10, TAC/GUM
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Fairchild Imaging to Exhibit at Photonics West 2007

Friday, June 10th, 2011

Fairchild Imaging to Exhibit at Photonics West 2007

Milpitas, CA (PRWEB) January 18, 2007

Fairchild Imaging announced today that it will exhibit at the Photonics West 2007 Conference and Exhibition in San Jose, California from January 23 – 25. The venue is an excellent opportunity for the company to unveil the latest high performance imaging solutions for the demanding audience of optical and instrumentation engineers.

Situated in booth 6330 of the South Hall, Fairchild Imaging will present new CCD and CMOS detector technology for demanding imaging applications in aerospace, defense, industrial and scientific markets. New image sensors include a four-port four megapixel CCD and a 1.3 megapixel CCD / CMOS hybrid. The new CCD is available in front- or back-illuminated configurations and offers dramatic improvements in both sensitivity and speed. The novel hybrid image sensor combines the best of both CCD and CMOS technologies: the high image quality, low dark current and high fill-factor of a CCD with the high speed, low-noise and low power of a CMOS readout. The 1.3 megapixel hybrid sensor delivers extreme low-light imaging performance at video and supra-video frame rates.

In addition to the image sensors, new low-light scientific camera technology incorporating these sensors will be presented. The Peregrine 3041 drives the CCD 3041 to the limits of its performance. The cooled, multiport Peregrine camera boasts 8 MHz, four-port readout, forced-air supported TEC cooling and a USB 2.0 interface. According to Colin Earle, Vice President of Sales and Marketing at Fairchild Imaging, “the new Peregrine 3041 CCD camera is an exceptional detector for low-light-level optical imaging”. “Photonics West is a great exhibition for this technology and draws the top scientists and engineers from around the world who demand this level of performance”, stated Earle.

About Fairchild Imaging

Fairchild Imaging is a designer and manufacturer of CCD and CMOS image sensors and cameras for aerospace, industrial, medical and scientific imaging. Located in Milpitas, CA, Fairchild Imaging is a privately held corporation whose major investors include The Carlyle Group, BAE Systems, and management. Information about Fairchild Imaging is available on the worldwide Web at http://www.fairchildimaging.com.

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, Vocus PRW Holdings, LLC.
Vocus, PRWeb, and Publicity Wire are trademarks or registered trademarks of Vocus, Inc. or Vocus PRW Holdings, LLC.

Tags: 2007, Exhibit, Fairchild, Imaging, Photonics, West
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Opteka SSC-20 Pre-Moistened CCD/CMOS Sensor Cleaning Swabs for SLR Cameras (20 Pack)

Sunday, May 29th, 2011

Opteka SSC-20 Pre-Moistened CCD/CMOS Sensor Cleaning Swabs for SLR Cameras (20 Pack)

Pre-moistened with a Tin Oxide soultion
Designed to clean CCD/CMOS chips and other optical and imaging surfaces
Leaves no visible residue
Easy cleaning process
This product is safe and will not cause any damage to your sensor

The Opteka SSC-20 sensor swabs are pre-moistened with a Tin Oxide cleaning solution, which leaves no visible residue and is specifically designed for CCD/CMOS chips. It is also recommended for other optical and imaging surfaces.

List Price: $ 79.99

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Tags: Cameras, CCD/CMOS, CLEANING, Opteka, Pack, PreMoistened, SENSOR, SSC20, Swabs
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What Is A Cmos Security Camera?

Sunday, February 6th, 2011

In the field of security and security camera systems there are two competing types of camera – when it comes to digital camera types – in use today; CCD and CMOS.

Both have their pros and cons and both are more than adequate as digital cameras for use with many security applications.

Understanding what a CMOS (complementary metal oxide semiconductor) security is can help one to make an informed decision when it comes to deciding just what camera system to go for when it’s time to pick one.

At their heart, both CCD (“charge coupled device”) and CMOS semiconductors are what digital camera experts refer to as “image sensors.”

They’re able to take light (which is sometimes known as “optical brightness capture”) and convert it into electrical signals which are then converted into binary – or digital – form and then rendered into hyper-accurate images.

A CMOS image sensor is lined up behind the lens or series of lenses in a security camera, and this is whether or not the camera makes use of a CCD or a CMOS semiconductor.

Keep in mind that the basic technology for the semiconductor is several decades old and that the material for the semiconductor is generally still silicon, which is an outstanding media for imprinting millions (and even billions or even trillions) of microscopic transistors on its surface.

It is these transistors that help to make the semiconductor a wonder of technology, by the way.

And CCDs or CMOS image sensors use slightly different processes for taking the light that they’re presented with and turning that light back into the image one sees through the lens.

Some experts say that it’s a case of “six of one, half a dozen of the other,” but there are definable differences that, if known, can help a person decide between the two types of cameras.

In terms of pros and cons, it’s helpful to know that a CMOS camera has an image sensor that uses far less power than does a CCD.

This can mean less power consumption on the part of the camera which can mean it’ll last longer on emergency batter power should something happen to interrupt the camera’s standard electrical supply.

For some security-conscious folks who want a camera that can make it through such a scenario, a CMOS-equipped camera may give them a bit more comfort.

On the other hand, it can take longer for a CMOS sensor to take the light it’s given (and it’s also not as light sensitive, meaning it isn’t as good at “seeing” everything, especially in low-light conditions) and move it across the surface of the sensor (it employs all those transistors) and then convert the light to a digital (or binary) form.

Every security camera (or any digital camera, for that matter) will list its image sensor type right on the side or on the box. Check on that prior to buying.

Check with the security camera vendor or camera, also, to determine the kind of camera it intends to install in the system.

Both have their benefits and both have a few downsides.

Power consumption is higher in a CCD (much higher, in some cases) but picture quality will be outstanding.

CMOS cameras can last longer on battery power and are more efficient, though they take longer to process a picture.

Decide what’s most important and then go for it.

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Rose Li is the PR Manager for Chinavasion, China’s premier dropshipper for wholesale consumer electronics

Article from articlesbase.com

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Tags: Camera, CMOS, Security
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Battle of the video sensors ? CMOS vs CCD

Friday, January 14th, 2011

The image sensor is the camera component which captures light and begins the process of turning it into a digital image. There are two types of security camera sensors: CCD (charge coupled device) and CMOS (complementary metal oxide semiconductor). Which of the two you choose depends on your application.

First a little background on each technology.

Wtih a CCD sensor, every individual pixel’s charge is transferred through an output node, which is then converted into an electrical signal. The signal is then buffered and sent as an analog signal. Because of the pixels can be devoted to light capture, and the image quality is usually pretty high.

With a CMOS sensor, every individual pixel performs its own charge-to-voltage conversion, and the sensor also performs amplification and noise-correction. The sensor also includes digitization circuits which allow the chip to output information in a digital format. Because of the complexity of this design, the area devoted to light capture is reduced. And because each pixel must perform its own conversion, uniformity (thus image quality) is lower.

The production cost for both types of sensors are similar, but CMOS sensors sometimes require additional support chips to optimize image quality. CMOS sensors are great for devices that require speed and low power consumption, while CCD sensors excel in image quality and low light performance.

While both CMOS and CCD sensors have matured a great deal in recent years, when it comes to security cameras, I prefer CCD for outdoor applications and CMOS for indoor IP camera functions. Let me explain why.

In the still camera world, CCD and CMOS are almost at par in terms of performance. In fact, CMOS sensors are attractive in this space because of their much lower power requirements – an important feature for devices which run on batteries. In the security camera world, I find that CCD sensors outperform their CMOS counterparts in several key metrics.

The first and most important is light sensitivity. If you need a security camera with superior night vision capabilities, CCD is the way to go. The CMOS cameras I have tested, with or without IR illumination, were almost completely blind in the dark. Cameras with CCD sensors are very capable in low light applications, and are terrific when coupled with infrared illumination. If you need to record in low light situations, CCD is the way to go – do not even consider CMOS.

The second factor to consider is image quality. In the security camera world, while both technologies are getting closer, CCD still has the edge when it comes to image quality. This is because CCD sensors exhibit less image noise than their CMOS counterparts.

So why would one consider purchasing a security camera with a CMOS sensor? Mainly because these sensors are more prevalent in IP Security Cameras – that is, cameras that are equipped with built in web servers and communicate using the IP protocol over CAT5 cabling. These cameras tend to be very affordable and are great for indoor applications that require web based video streaming.

In conclusion, CCD sensors are the way to go for outdoor applications, low light scenarios or when a higher quality image is required. CMOS sensor based cameras should only be considered for indoor applications with decent lighting conditions.

Andy J Thompson is a freelance CCTV specialist from Canada.

His blog can be found at http://www.securitycameratutor.com

Article from articlesbase.com

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Tags: Battle, CMOS, sensors, video
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DVD-Ranger – #1 Video Dvd Copy and Converting Solution

Wednesday, October 6th, 2010

DVD-Ranger is the complete solution for Dvd copying and converting. The program includes all standard copying and converting tools, as well as a variety of aditional functions and modules that can be used to enhance your copy experience.
DVD-Ranger – #1 Video Dvd Copy and Converting Solution

Tags: Converting, copy, DVDRanger, Solution, video
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