Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [camera]

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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What is this test pattern used for? (Computer vision, camera distortion mapping)

I came across a test pattern a few years back in a robotics laboratory that I remember being told was some sort of test pattern to train cameras for robotic vision. It was like some sort of checkerboard pattern but it was not a uniform pattern.…
stbtra
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dvp vs mipi camera interface

I have a CPU board (NanoPI M1) which specifies it has a DVP 24-pin camera port. However many of the usual camera modules (like OV5647) says they have both DVP and MIPI support. How would it generally work to connect one of them to a DVP port?
Rolle
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What is this part of the webcam called?

What is this camera component called? I was recently taking apart my old laptop and found that the webcam module had this circular component that screws on and off. I saw that it contains the lenses, and behind it is the sensor. I attached a high…
F16Falcon
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non-linear characteristic of image sensor

Let me ask a stupid question. It might not be a well specified question, but since I'm a newbie in this field, I'd like to ask it. The question is this. Why the pixel counts from CMOS image sensor is not linearly proportional to exposure time? I…
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Capturing a video of a projector image

For a 3D scanning project I need to capture a video/snapshots of an object and a projector image that is projected on the object. The projector works (only) with a framerate of 60Hz, the camera supports rates in {3.75,7.5,15,30,60} Hz. I have to…
janoliver
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Determining magnitude of damping resistor for CMOS image sensor

I'm designing a camera module using Sony's IMX224 image sensor. This module would be connected to STM32F4 discovery board. At this moment I want to make a simple camera module so that I can write program for controlling the image sensor through the…
SD11
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Is low humidity bad for CMOS camera?

I'm searching for camera modules using CMOS image sensor. But I found something interesting. Some vendors specified operation humidity between 20~80%. But does it make sense that low humidity affect to camera? Could anyone please explain what…
SD11
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Cropping of OV2640 full resolution, understanding the registers

I'm working with a k210 chip on a sipeed maix go, and I'm trying to process UXGA pictures. The chip can't handle having more than QVGA pictures in memory, so I want to only retrieve a "crop" of the full resolution at a time. To do so, I'm trying to…
Meruje
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Shortest focus distance of OV2640 camera modules with fixed focus

Is it possible to decrease focus distance to 3-4 centimeters on fixed-focus OV2640 camera modules which sell with Chinese ESP-32 CAM or M5Stack ESP32 CAM? They are set up to infinite focus out of the box.
br.
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Camera Electronic Shutter

I have close to zero experience with cameras modules. I need a global electronic shutter camera for my application. While I was browsing I see that the shutter speeds that are 1/1000th of a second. Is it possible to control these modules for: (in…
Ktc
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Why does physically touching a specific pin eliminate circuit issues?

This is a strange question and I don't know if I will be able to describe it correctly. There have been several instances working with a system that basically consists of a board camera, an FPGA, and TFT display where I can eliminate image noise by…
user2514676
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Camera trigger issue

I have a camera from Imaging Source and it captures just one image for every external trigger pulse. But I want it to capture 3 images. Is there any idea of how to do it ? The datasheetfor the camera DMK 23UV024 Steps executed so far: Generate…
Rene Duchamp
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Connecting a 10 bit camera to a CPU with 8 bit camera interface

I have 10 bit camera (MT9V032) that I need to attach to a processor that has only 8 bit camera data interface. (no LVDS) What is the best way to connect these two? My current plan is to leave data 0/1 pins floating or pulled to ground with 10K…
Ktc
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Which registers for OV7670 for returing unsigned 8 byte data instead of 16 bytes data

In OV7670 you can specify CIF(352x288), QVGA(320x240), QCIF(176x144) and VGA(640x480). But I'm looking for a minimal resolution. For example QVGA would or QCIF would be a good choie. But here is the problem. When I select for example no color and…
euraad
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How can I record video with single camera module of smartphones?

I want to record video apart from my smartphone(Let's say Samsung Galaxy S3) taking out it's camera module.I think it is possible because camera's microchip comes with itself.I mean I will connect camera to micro SD and I will give wanted DC current…
K.Rejepow
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