Automatic Extended High Dynamic Range Image Sensor From Melexis Focuses on Driver Assistance and Night Vision Systems
Poster: SySAdmin
Posted on June 21, 2011 at 8:56:01 AM
Automatic Extended High Dynamic Range Image Sensor From Melexis Focuses on Driver Assistance and Night Vision Systems
YPRES, Belgium, June 21, 2011/PRNewswire-FirstCall/ --
On-chip Automatic HDR Control Function Simplifies Camera Design
Melexis announces the launch of a new image sensor in the "Avocet"
series, the MLX75412 extended HDR Image Sensor. The MLX75412 includes two
on-chip functions: a high performing fully automatic Extended HDR and
exposure control function named "Autobrite(R)" and an adaptive histogram
remapping function named "Autoview?". With these functions, a full feature
set is offered which greatly simplifies building HDR cameras.
Focus applications include automotive driver assistance and night vision
applications, security/surveillance applications, fleet safety cameras,
truck blind spot cameras, transportation/heavy vehicle cameras, and other
outdoor and all weather cameras.
The Avocet series are wide-VGA image sensors with a 1024x512 pixels
resolution. They feature an extended high dynamic range (Extended HDR) up to
154dB in every single frame with a full resolution frame rate up to 60fps.
Sensitivity in terms of SNR10 is 25nW/cm2 @ 25degC @ 535nm.
This low light performance combined with the extended HDR offers
excellent picture quality during day and night time and thus enhances safety
for driver assistance systems.
Lane Departure Warning and Forward Collision Warning
In the US, the National Highway Traffic Safety Administration (NHTSA)
has changed New Car Assessment Program (NCAP) requirements for the 2011
model year. The familiar five-star crash test ratings score shown on the
window sticker will also designate the presence of camera based Lane
Departure Warning (LDW) and Forward Collision Warning (FCW) features.
Cliff De Locht, Product Line Manager at Melexis comments: "In side by
side tests with other automotive imagers, we have seen situations where -
depending on the position of the sun - the Avocet imager was able to
distinguish faded lane markings where other image sensors failed."
"Technically speaking, because the Extended HDR technology is based on 6
partial pixel resets within an exposure period, the Avocet allows tight
control of the response curve to maximize picture details at all light
intensities. Fully automatic Autobrite uses this capability at maximum to
dynamically and automatically optimize the image sensor response on a
frame-by-frame basis."
"The bottom line is that Autobrite is able to swiftly and automatically
adapt to any lighting condition, including extreme light conditions like
when you are driving towards the sun. This results in improved detection
performance for lanes, vehicles and pedestrians."
Night Vision
Dynamic range at dawn or at night is most important. During daytime, the
brightest lights, like an approaching car's headlights, come close to
sunlight intensities while the dark areas go much lower in light intensity
The result is a stretching of the dynamic range of low light scenes to 120dB
and higher.
The MLX75412 Avocet with Autobrite function is perfectly fit to cope
with these extended HDR requirements. On top of that, the Avocet features
enhanced responsivity for near infrared light (800-1000nm). Last but not
least, an anti-reflective coating on the Glass-BGA is specially designed for
night vision, featuring minimal light reflectivity in the range 400-1000nm,
to minimize stray light for visible and for near-infrared light.
Cliff De Locht, Product Line Manager at Melexis comments: "We did
extensive night drive testing with the MLX75412 and are thrilled with the
(monochrome) night sensitivity and behavior of the Autobrite Extended HDR
function. We are confident this offer gives an adequate response to the many
low light and HDR requirements out there."
Samples
The MLX75412 "Avocet" image sensor is available in 4 versions:
monochrome, RCCC, color RGBG and color RGBi.
Product info: http://www.melexis.com/mlx7541
[http://www.melexis.com/mlx75411 ]2
Samples: http://www.futureelectronics.com.
Source: Melexis NV
Contact: Rik Moens, rmo@melexis.com, +3213670780
YPRES, Belgium, June 21, 2011/PRNewswire-FirstCall/ --
On-chip Automatic HDR Control Function Simplifies Camera Design
Melexis announces the launch of a new image sensor in the "Avocet"
series, the MLX75412 extended HDR Image Sensor. The MLX75412 includes two
on-chip functions: a high performing fully automatic Extended HDR and
exposure control function named "Autobrite(R)" and an adaptive histogram
remapping function named "Autoview?". With these functions, a full feature
set is offered which greatly simplifies building HDR cameras.
Focus applications include automotive driver assistance and night vision
applications, security/surveillance applications, fleet safety cameras,
truck blind spot cameras, transportation/heavy vehicle cameras, and other
outdoor and all weather cameras.
The Avocet series are wide-VGA image sensors with a 1024x512 pixels
resolution. They feature an extended high dynamic range (Extended HDR) up to
154dB in every single frame with a full resolution frame rate up to 60fps.
Sensitivity in terms of SNR10 is 25nW/cm2 @ 25degC @ 535nm.
This low light performance combined with the extended HDR offers
excellent picture quality during day and night time and thus enhances safety
for driver assistance systems.
Lane Departure Warning and Forward Collision Warning
In the US, the National Highway Traffic Safety Administration (NHTSA)
has changed New Car Assessment Program (NCAP) requirements for the 2011
model year. The familiar five-star crash test ratings score shown on the
window sticker will also designate the presence of camera based Lane
Departure Warning (LDW) and Forward Collision Warning (FCW) features.
Cliff De Locht, Product Line Manager at Melexis comments: "In side by
side tests with other automotive imagers, we have seen situations where -
depending on the position of the sun - the Avocet imager was able to
distinguish faded lane markings where other image sensors failed."
"Technically speaking, because the Extended HDR technology is based on 6
partial pixel resets within an exposure period, the Avocet allows tight
control of the response curve to maximize picture details at all light
intensities. Fully automatic Autobrite uses this capability at maximum to
dynamically and automatically optimize the image sensor response on a
frame-by-frame basis."
"The bottom line is that Autobrite is able to swiftly and automatically
adapt to any lighting condition, including extreme light conditions like
when you are driving towards the sun. This results in improved detection
performance for lanes, vehicles and pedestrians."
Night Vision
Dynamic range at dawn or at night is most important. During daytime, the
brightest lights, like an approaching car's headlights, come close to
sunlight intensities while the dark areas go much lower in light intensity
The result is a stretching of the dynamic range of low light scenes to 120dB
and higher.
The MLX75412 Avocet with Autobrite function is perfectly fit to cope
with these extended HDR requirements. On top of that, the Avocet features
enhanced responsivity for near infrared light (800-1000nm). Last but not
least, an anti-reflective coating on the Glass-BGA is specially designed for
night vision, featuring minimal light reflectivity in the range 400-1000nm,
to minimize stray light for visible and for near-infrared light.
Cliff De Locht, Product Line Manager at Melexis comments: "We did
extensive night drive testing with the MLX75412 and are thrilled with the
(monochrome) night sensitivity and behavior of the Autobrite Extended HDR
function. We are confident this offer gives an adequate response to the many
low light and HDR requirements out there."
Samples
The MLX75412 "Avocet" image sensor is available in 4 versions:
monochrome, RCCC, color RGBG and color RGBi.
Product info: http://www.melexis.com/mlx7541
[http://www.melexis.com/mlx75411 ]2
Samples: http://www.futureelectronics.com.
Source: Melexis NV
Contact: Rik Moens, rmo@melexis.com, +3213670780