A camera is an optical or opto-electronic device that records a 2D image of a 3D scene. Cameras can be still cameras (photography) or video cameras for moving images.

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117 views

What component most limits a camera's frame rate?

I have a quick question here when I started wondering how they made slo-mo cameras: What is the part that most limits frame rates in average smartphone cameras? Is it the CCD chip, or a component in ...
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1answer
57 views

What is this effect causing a flash on video when a model aircraft collides with the ground?

When recently flying a model airplane with friends, I was recording on a smartphone camera (I believe CMOS, 720p, 120fps), and saw, in one of the videos, a flash that was not visible to the naked eye, ...
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2answers
76 views

What does “IR CUT” do on this camera? [on hold]

I bought this camera to experiment with, mostly based on the fact that it is considered to be a "Night Vision IR" camera. Now that I've received it, I am having a hard time finding out certain ...
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0answers
35 views

Are plane's black boxes essentially useless tool in the modern age and how to improve upon it? [migrated]

I am just reading the latest news on the air plane crash that happened couple days ago and it dawned on me that one too many times have I read a story where after black box is obtained, it provided no ...
0
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1answer
53 views

How can I synchronize the framerate of two webcameras. Is it even possible?

Pretext I am currently playing with stereo vision (two cameras capturing images simultaneously) for my robot hobby project. There are a few traits that is important when processing the images ...
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0answers
39 views

Infrared filter on CMOS single package sensor

I am trying to recognize infrared-reflectors with a CMOS module. The ideal would be to use an IR filter to get rid of everything else and only have the trackers (reflectors) on the picture. I found ...
0
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1answer
38 views

Building a MJPG Camera [closed]

I am working on a project that needs a custom camera capable of MJPG over WIFI. The project is a solar powered camera on a track the tracks objects walking past. The device should transmit the images ...
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1answer
53 views

Synchronized digital cameras

at the moment im doing some research. I want to create an embedded "application" with two digital cameras ( > 30fps, global shutter, >= 800x600 resolution ) on an Freescale Arm iMx. 6 Quad (i think ...
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1answer
50 views

How do image sensors output in different resolutions?

Say an image sensor has an array size of 1280 x 800 pixels. Its specifications state that it has output support for the following resolutions: WXGA (1280 x 800) and VGA (640 x 480). My question is ...
0
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1answer
62 views

Why would any smartphone need an ambient light sensor if it already has a front-facing camera?

Why would any smartphone (e.g. the Samsung Galaxy S5) need an ambient light sensor if it already has a front-facing camera? Surely it requires time and money for the engineers to design an ambient ...
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0answers
71 views

DC Iris control circuit

Does anyone understand how a control circuit for the DC Iris found in video camera lenses works? From my research I see that it is a four pin interface two pins for drive, and two for "damping". I ...
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2answers
66 views

Camera Parallel Interface vs Camera Serial Interface?

I need to select a System on Module that will be used to stream a HD video stream over WIFI. Ideally it should support two camera input. When researching the various modules on the market, I find ...
0
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1answer
360 views

Removing ripples from PWM controlled LED in camera vision application

I have made a camera vision setup with highpower LED's which are controlled with a simple NE555 timer and a mosfet. The LED system is lighting up an area where a camera is looking, but unfortunately i ...
3
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1answer
72 views

Camera Synchronization

I'm interested in having two or more cameras precisely synchronized for machine vision purposes. All the global shutter cameras I've seen basically have two modes: free-running, with a maximum frame ...
0
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2answers
123 views

Finding serial port on generic IP Camera PCB

Background story is that during firmware update of a generic IP Camera, with great wisdom, I managed to wipe part of the embedded Linux files, and in order to recover it, I need to access the ...
3
votes
1answer
119 views

PCB data trace lengths tolerable difference for high frequency

I have to interface a camera to a controller using the DCMI protocol for my project. I have around 17 (data+control) lines which are used with the camera. The frequency of operation is about 10 MHz. ...
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2answers
170 views

How does 3D Time-of-Flight (TOF) camera work?

This is my first post in this forum! So Point me if anything is not clear! I want to know how TOF camera works? So I've done Google & read some nice explanation about How Phase difference between ...
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2answers
55 views

Using ethernet with a camera

I own one of those little pinhole 'spy cameras' that connect to your tv.and are powered by 5v? With an arduino and ethernet shield, would there be a way for me to create an IP camera type thing?
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1answer
43 views

Sourcing An Image Sensor? [closed]

I'm wanting to create a basic digital camera, I have most of it figured out... except for the image sensor itself. Looking in the normal places (digikey, mouser), I'm finding some very basic, low ...
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2answers
87 views

Designing an over voltage protection for really low voltage

I'm working on time lapse photography projects and one of the main problems is the voltage supply. So, using a couple of hot glue tubes I was able to create dummy batteries for my camera to connect an ...
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0answers
91 views

Spy camera in a pen with streaming

I want to have a device in a pen, which can somehow transfer video data (or even photo would be great) within a 80-120m range. There're lots of "spy pens" on eBay, but I need one to be able to do its ...
2
votes
4answers
129 views

Industrial flash (LED?) for rolling shutter

I am developing industrial monitoring system, at this moment with Raspberry Pi and its camera (this might change if it is not satisfactory). The camera will take still pictures of the scene once in a ...
0
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2answers
62 views

Best Sensor for obtaining types of objects at a distance

I could not completely describe the sensor required in the title, what I am looking for is a sensor that can pick up if there is a different material, from a preconfigured material type, lets say in ...
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0answers
81 views

Are there thermovision cameras available to hobbyists?

Years ago, while investigating a short, it came to me that using a thermal vision camera would help an electrical engineer in a lot of situations. Checking it then, such devices were prohibitively ...
0
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1answer
25 views

Amperage for Sony SNC-VB630 Camera [closed]

I am trying to choose a right DC adapter for SNC-VB630 CCTV Camera but the only specs I could find in the official documentation was 'INPUT 12V DC'. Nothing about amperage. I have a 12V dc adapter ...
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1answer
68 views

Can I modify this bluetooth keyboard to only have a certain keys so I can carry it around?

I'm trying to make a bluetooth remote shutter release thing for Androird and iOS. I asked about doing it from scratch but everyone thinks it's too ambitious for a beginner, so I gave up on that Few ...
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0answers
136 views

Differences between MIPI-CSI1 and MIPI-CSI2

I'm trying to find what makes a difference between MIPI-CSI1 and MIPI-CSI2. From what I understand on this specifications document, they both work the same way, except that MIPI-CSI2 offers up to ...
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1answer
64 views

Displays, camera, speakers, microphones: why after more than 50 years of development do they still need calibration? [closed]

An old question running through my mind: Displays, camera, speakers, microphones: why after more than 50 years of development do they still need calibration? Whatever cheap or high-end material I ...
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votes
1answer
77 views

Analog video surveillance camera motion detection feature [closed]

For example Samsung SCB-2000PH Specification PDF has motion detection feature. For what purpose it is in analog camera? That camera does not have any output pins/connectors, that can trigger some ...
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0answers
162 views

Canon EF SPI data protocol and IS activation

I have been trying to find information about Canon EF data protocol between lens and body. So far I have seen examples how to control focus or aperture but I would like to know how IS is activated. Is ...
0
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1answer
361 views

Is there a wifi chip on this board? [closed]

I have a Sony QX10 camera, with comes with built-in wifi. I want to to connect wired ethernet to it. I was hoping I could find a wifi chip inside the camera, and solder to where the ethernet traces go ...
10
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4answers
4k views

Why is it so expensive to produce cameras for non visible light?

Typical consumer cameras can capture wavelength of 390-700 nm 400-1050nm . But why is it so difficult and expensive to produce cameras for infrared, ultraviolet, hard x-rays, etc.? The only thing ...
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72 views

Marsboard A20 camera module

Is it possible to use this camera module (or any other same camera module, preferably PAL) with new MarsBoard A20? According to specs, it has only CIF camera headers and some other EXT headers. So ...
3
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3answers
112 views

Selecting digital componentry in bulk [closed]

There are a ton of electronics retailers and suppliers on the internet, all selling components at (essentially) retail prices. But when big companies need to use digital components (batteries, ...
0
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1answer
258 views

OV7670 frames are 640x308 not 640x480

There is a lot of helpful information on the internet about getting the OV7670 camera up and running but the following problem has me a bit stumped. I am using a Maple r5 Board (STM32F103RBT6) to ...
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1answer
104 views

Safe line IR laser which will be seen from 15 meters by camera module

What characteristics (wavelength, mW) IR line laser should have to: be seen by camera module from 15 meters outdoor in day-light too safe for eyes line as big as possible thickness of line should ...
0
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2answers
296 views

How do you wire up the OV3640 camera module?

I've been wanting to do a project with this module in mind and have found some resources on it (mainly arducam) but I have no idea how to connect it to a micro controller. The data sheets show that ...
1
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1answer
137 views

Xilinx Video Timing Controller freezes processor

I'm trying to acquire video from an image sensor using a ZedBoard with Vivado 2014.2 and I used an existing (working) video passthrough project of mine and simply added in a debayer (color filter ...
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1answer
1k views

Raspberry Pi stereo camera frame synchronization/genlock (video or still image)

I need to frame synchronize a stereo camera for a computer vision application. The synchronization should the best possible, hopefully on a millisecond level. I would like to get about 10 FPS either ...
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1answer
681 views

Genlock two OV5642 camera modules on Arduino with ArduCam

I need to shoot stereo video or stills at about 10 FPS possibly in perfect sync. My plan is to set up a 3D stereo rig (2 standalone units - each consisting of Arduino UNO + ArduCam shield + OV5642 ...
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0answers
513 views

Interfacing MSP430 Launchpad with OmniVision Camera Module?

I have seen that it is possible to interface an OmniVision OV2640 camera module with Ardiuno Uno. Would it be possible to interface this Camera Module with an MSP430 Launchpad board to get a video ...
2
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2answers
194 views

Digital camera sensors and long exposures

Why do digital cameras need a long exposure time in low light conditions? Sometimes the exposures are 15-30 seconds or longer. Doesn't the electronic sensor achieve a steady state under 1 second or ...
0
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1answer
281 views

Instructions on building CMOS camera wifi video transmission [closed]

I am not sure this is the appropriate place to ask this kind of question, but I believe this is the best community to ask. I'd like to learn how to build my own circuit that would be capable of ...
1
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1answer
430 views

Can an IR camera be used in broad daylight?

I am wondering if it is at all possible to have an IR camera that can be faithfully used in broad daylight. I have already seen this question here, but I am looking to understand if a full blown ...
1
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1answer
107 views

Determining purpose of camera pins [closed]

I bought a small HD camera for a quadrocopter. It is dedicated for the specific model and supports filming motion JPEG movies and shooting stills. (photos not mine) The connector is custom and ...
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1answer
122 views

Testing camera framerate variability by filming clock time

I would like to test the framerate variation from nominal value in a range of consumer video cameras. For this I intend to film some sort of high frequency clock and compare the displayed clock time ...
1
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1answer
126 views

3ms Camera LED Flash

After getting some ideas (thanks to users Russell McMahon, akellyirl, The Photon...) and some extra research and redesign, I would like to hear opinions about how to approach my LED flash project. ...
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2answers
81 views

Cell phones video encoding

My question is, how are cell phones bale to produce on the fly video like mp4? Are they using a hardware encoder chip? Because most of them run on ARM chips? Are there ARM chips that can handle the ...
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0answers
126 views

Building a H264 Camera circuit

Good Day, I am working on a project that requires a camera module that links up to a linux board. The future plan is to make a custom PCB, however, it seems that there are no resources out there that ...
2
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2answers
113 views

Powering DSLR with buck/boost convertor

I've been experimenting a bit with time-lapse photography lately. Still basic stuff. Right now I have to change batteries every so often which is a pain because it's hard not to move the camera when ...