A semiconductor device which when placed behind a lens and has an image formed on it's surface spatially and temporally samples the charge generated from the incident light. These samples form an internal representation of the incident light. Types of image sensors that are common are CCDs, CIS ...

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49 views

High-Sensitivity, Low-Latency Imaging Sensor

This might be a bit of a long shot for this venue, but: I'm looking into sensors for a scientific imaging application where the key is excellent sensitivity (quantum efficiency and noise performance) ...
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1answer
75 views

Thoughts on making a hand-held OCR

I have an electronic project about a OCR that could be held in hand and used like a Tipp-Ex mouse (image) to scan words. As I am an amateur in electronics, I don't really know what sensor(s) I can use ...
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55 views

Calculate EMVA1288 temporal dark noise

Say I have a dark current plot (image mean over shutter time) with an offset (y-intercept) of 4100 and system gain K = 4.23, is the following calculation correct? Variance of dark signal = sqrt(4100) ...
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1answer
229 views

DIY: What is required in order to save a picture captured from a CMOS image sensor to a digital format?

I have a need to programmatically capture HD pictures (2 MP or better) under predictable lighting from at least 8 locations. Buying multiple cameras is not only expensive, but does not allow me to ...
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1answer
56 views

EMVA standard 1288 SNR formula (equation 11)

I'm trying to understand equation 11 for Signal-to-Noise Ratio in EMVA standard 1288 Release Candidate 3.1: http://www.emva.org/cms/upload/Standards/Stadard_1288/EMVA1288-3.1rc.pdf page 7. Using ...
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420 views

Raw access to CMOS image sensor?

I am interested in developing an idea using CMOS sensors, and I was wondering if I could get some pointers (I don't know much about image sensors) First, my understanding is that CMOS image sensors ...
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1answer
174 views

Color binning on Bayer sensor

Is there a difference between doing binning on a Bayer sensor before or after the ADC with respect to spatial information lost? How the debayering works should not matter, Assuming the same method ...
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5answers
360 views

image sensor line problem

I have an image sensor problem and I am looking everywhere to identify the problem but couldn't. Attached is the problem I observe. As you can see there are several horizontal lines in the image. ...
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1answer
442 views

Detecting absolute position

I am working on project that requires me to detect the position of a pen on a piece of normal paper. My first thought was to use 4 IR LEDs on a receiving unit set at the top of the page, and to put ...
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1answer
417 views

How CIS (contact Image sensor ) works?

I'm working on a project that needs a CIS sensor All I can understand that this sensor output an analogue signal that I take on ADC & store the data & process on it . I will use this ROHM ...