Active pixel sensor

An active-pixel sensor (APS) is an image sensor consisting of an integrated circuit containing an array of pixel sensors, each pixel containing a photodetector and an active amplifier. There are many types of active pixel sensors including the CMOS APS used most commonly in cell phone cameras, web cameras, most digital pocket cameras since 2010, and in most DSLRs. Such an image sensor is produced by a CMOS (and is hence also known as a CMOS sensor), and has emerged as an alternative to charge-coupled device (CCD) image sensors.

The term active pixel sensor is also used to refer to the individual pixel sensor itself, as opposed to the image sensor; in that case the image sensor is sometimes called an active pixel sensor imager, or active-pixel image sensor.

History

The term active pixel sensor was coined in 1985 by Tsutomu Nakamura who worked on the Charge Modulation Device active pixel sensor at Olympus, and more broadly defined by Eric Fossum in a 1993 paper.

12:06

Image Sensors 1 of 6 - Photodiode

Image Sensors 1 of 6 - Photodiode

Image Sensors 1 of 6 - Photodiode
Photodiode image sensor CCD CMOS
1:05

Let's see how a CMOS-Sensor in a Canon DLSR works 1/2

Let's see how a CMOS-Sensor in a Canon DLSR works 1/2

Let's see how a CMOS-Sensor in a Canon DLSR works 1/2
Originally founded as a camera manufacturer, Canon has introduced a series of innovative SLR camera products in its continuing pursuit of the ideal single-lens reflex (SLR) camera. The high-quality images realized by Canons proprietary and world-renowned lenses, CMOS sensors, and imaging processors are the result of the companys efforts in optical and cutting-edge digital imaging technology. Canon's device technologies create key devices that highlight the appeal of products. Canon combines the latest optical, electronic-circuit, and ultra-precision-processing technologies to manufacture a range of devices.
17:53

Active pixel sensor

Active pixel sensor

Active pixel sensor
An active-pixel sensor is an image sensor consisting of an integrated circuit containing an array of pixel sensors, each pixel containing a photodetector and an active amplifier. There are many types of active pixel sensors including the CMOS APS used most commonly in cell phone cameras, web cameras, most digital pocket cameras since circa 2010, and in most DSLRs. Such an image sensor is produced by a CMOS, and has emerged as an alternative to charge-coupled device image sensors. The term active pixel sensor is also used to refer to the individual pixel sensor itself, as opposed to the image sensor; in that case the image sensor is sometimes called an active pixel sensor imager, or active-pixel image sensor. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
1:43

Spinoff Technology-CMOS Active Pixel Sensors

Spinoff Technology-CMOS Active Pixel Sensors

Spinoff Technology-CMOS Active Pixel Sensors
2:05

Active pixel sensor

Active pixel sensor

Active pixel sensor
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1:59

Why a larger sensor is more important than the number of megapixels a camera has

Why a larger sensor is more important than the number of megapixels a camera has

Why a larger sensor is more important than the number of megapixels a camera has
In this video we explain the benefits of larger camera sensors such as the 2/3inch EXR-CMOS II in our compact X20 and XQ1 cameras and the APS-C sized sensor used in our X100S and Compact System Cameras.
2:57

CCD vs CMOS Sensors

CCD vs CMOS Sensors

CCD vs CMOS Sensors
This video is part of the Udacity course "Computational Photography". Watch the full course at https://www.udacity.com/course/ud955
0:28

Feature Detection and Tracking with the Dynamic and Active pixel Vision Sensor DAVIS

Feature Detection and Tracking with the Dynamic and Active pixel Vision Sensor DAVIS

Feature Detection and Tracking with the Dynamic and Active pixel Vision Sensor DAVIS
In this video, we demonstrate how an event camera can be used to track corner features on an object rotating at more than 1600 degrees per second. Since the features on the outer points of the object lie at about 65 pixels from the center of rotation, those features are tracked at speeds of more than 1800 pixels per second! We achieve this using a novel vision sensor, called DAVIS, which combines a standard camera and an event-based camera in the same pixel array. Features are detected in the first frame and then tracked asynchronously from the events. More info in the paper below. If you are interested to see how this can be used in an event-based visual odometry pipeline, please check out this other work: https://youtu.be/RDu5eldW8i8 Reference D. Tedaldi, G. Gallego, E. Mueggler, D. Scaramuzza Feature Detection and Tracking with the Dynamic and Active-pixel Vision Sensor (DAVIS) International Conference on Event-Based Control, Communication and Signal Processing (EBCCSP), Krakow, 2016. PDF: http://rpg.ifi.uzh.ch/docs/EBCCSP16_Tedaldi.pdf Our research page on event based vision: http://rpg.ifi.uzh.ch/research_dvs.html For event-camera datasets and event camera simulator, see here: http://rpg.ifi.uzh.ch/davis_data.html Robotics and Perception Group, University of Zurich, 2016 http://rpg.ifi.uzh.ch/
13:06

The Science of Camera Sensors

The Science of Camera Sensors

The Science of Camera Sensors
A lot goes on under the hood when you press "REC" - check out the fascinating science behind film and electronic camera sensors. This course is sponsored by RØDE Microphones http://rode.com/ Everything we talked about here only produces Black and White images - to get color - check out of course on Color: https://www.youtube.com/watch?v=lRheZ_MUYiY Errata: The chemical symbol for Phosphorus is P - not Ph... When we say "Photoelectric effect" we're really describing the "Photovoltaic effect"
1:57

Nasa's Spinoff Technology: Complementary Metal-Oxide Semiconductor Active-Pixel Sensor

Nasa's Spinoff Technology: Complementary Metal-Oxide Semiconductor Active-Pixel Sensor

Nasa's Spinoff Technology: Complementary Metal-Oxide Semiconductor Active-Pixel Sensor
The impact of Nasa's Complementary Metal-Oxide Semiconductor Active-Pixel Sensor in my daily life.

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Active pixel sensor

History

Image Sensors 1 of 6 - Photodiode

Let's see how a CMOS-Sensor in a Canon DLSR works 1/2