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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1answer
68 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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0answers
29 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
102 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 ...
2
votes
1answer
35 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 ...
1
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3answers
212 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 ...
1
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1answer
95 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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0answers
111 views
Looking for hardware SoC JPEG encoder [closed]
I'm trying to build an image system using an Omnivision OV10633 sensor (1280x720p) and am looking for a chip that can convert the output of the sensor (10-bit RAW or YUV422) to a JPEG encoded stream ...
2
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5answers
264 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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2
votes
1answer
254 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 ...
0
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1answer
296 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 ...
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0answers
78 views
Are there any commonly available (single quantities) large image sensors? [closed]
I am looking for an monochrome image sensor that is commonly available in single quantities, that is as large as possible (as close to an optical format of 1" or bigger).
