Questions tagged [camera]

Use the Camera tag for any questions related to how to use a camera or webcam with the Raspberry Pi.

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1answer
799 views

Two Webcams Taking Stills

I’m a bit of a novice, needing to do this for a university project. I need to connect two USB webcams to the RPi and get each to take a still image and save it in “%iimg%i” naming notation to identify ...
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1answer
305 views

Cannot take picture with Canon Rebel XT connected to Pi3 via gphoto2

When I try to take an automatic picture with my SLR camera (Canon Rebel XT) via the following command in gphoto2: gphoto2 --trigger-capture It returns an error as follow *** Error *** ...
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1answer
1k views

Raspistill doesn't work well in low light

I am taking photos every hour during the day. Photos at night are very underexposed as you can see in my example. Here's the part of the python script that matters import os os.system("raspistill ...
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1answer
431 views

IP Cam and local network on different ethernet ports on raspberry pi

The Setup: A raspberry pi 3b running raspbian is connected over two ethernet ports (eth0 native, eth1 over USB) to an ip cam at eth0 and to the local network and the internet over eth1 like scatched ...
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1answer
2k views

Stereoscopic capture (2 cameras) on Raspberry Pi 3?

What's the best way to connect 2 cameras to the Raspberry Pi? Is it true the only way to do it is with the compute module? Can you use 2 USB cameras? Can you use a multi-camera adapter like this? (...
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2answers
118 views

Virtual Reality with RPi 3

I am working on a project in which I am trying to combine two seperate USB webcamera's to create a pair for virtual 360 degree footage. Can RPi 3 encode this video and send it to a smartphone ...
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1answer
7k views

NGINX Reverse Proxy IP Camera HTTPS and RTSP

I'm new to the Rasp Pi so am at a stage where I'm following existing instructions rather than knowing for sure how to solve problems. I'm trying to set up a reverse proxy on the Rasp Pi, using NGINX ...
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1answer
46 views

What is the earliest place in the boot process where camera (raspistill) can be used?

It seems that right after local-fs.target doesn't work. Any idea what prevents it from working early in the boot process?
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3answers
4k views

Not able to detect camera on Raspberry Pi 3

I have installed the "RASPBIAN STRETCH WITH DESKTOP" from https://www.raspberrypi.org/downloads/raspbian/ I have plugged in my camera module correctly (blue stripe facing towards the Ethernet port) ...
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1answer
6k views

ERROR opening V4L interface: No such file or directory

Environment information (cat /proc/cpuinfo): processor : 0 model name : ARMv6-compatible processor rev 7 (v6l) BogoMIPS : 697.95 Features : half thumb fastmult vfp edsp java ...
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1answer
1k views

PiCamera long exposures

Revisiting this issue Raspistill in manual exposure I found that the shutter time of the photo I got from this command raspistill -ss 6000000 -t 30000 -o long_exposure.jpg is 6 seconds as ...
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0answers
314 views

c310 logitech webcam not closing properly in pygame code

I'm accessing my c310 logitech webcam in python with pygame in an attempt to take pictures and save them. My final goal is to take a new picture every minute for 24 hours to make a timelapse. Here is ...
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1answer
35 views

Is it correct to say that we have few cm computers but we still need a bulky transformer? [closed]

In a past I planned an arduino project, on the microcontroller side. With the possibility to go idle and save batteries. But arduino is not a computer. The reduced size of things like raspberry pi ...
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3answers
8k views

Raspberry Pi 3 and V4L2 C++ Capture Code for JPEGs

I have a Raspberry Pi 3 with the latest Raspbian Stretch, and the Sony 8MB official camera. I can save a good looking JPEG with the following commands: v4l2-ctl --set-fmt-video=width=2592,height=...
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votes
1answer
504 views

How to connect two cameras to one Raspberry Pi?

I want to use two pi cameras (V2) at the same time for a project. There are a few ideas that came into my mind Creating a camera MUX: 14 pins of the CSI port are connected to a bread board, and two ...
3
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1answer
3k views

Motion 4.0 Server working but not streaming

I'm playing around with Motion 4.0 on my P3+ I seem to have everything working OK, its detecting motion and recording pictures and video. but when I go to the web page for the streaming output all I ...
0
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1answer
179 views

Is it possible to remove the USB ports and others I/O ports from a standard Raspberry Pi 3?

We're using Raspberry Pi 3's as prototypes but don't need the USB ports, as well as some of the other ports. Are they easily removable?
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0answers
707 views

OpenCV and PiCamera problem

I want to get photo from raspberry pi camera in python and i tried this code and it's works for me: for filename in camera.capture_continuous('img.jpg'): test_img = cv2.imread('img.jpg') But ...
2
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1answer
887 views

U4vl Streaming to multiple web clients

I am using uv4l-raspicam and the uv4l-server with WebRTC support, and I am able to stream the image of my camera to one single viewer of the website. The other viewers get an error message that there ...
2
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1answer
187 views

Trigger python script from camera images?

I'm doing a project where the pi sits inside a box, with the camera pointed to the bottom. When there is an object inside this box, the raspberry pi is supposed to post to facebook every 10 minutes. ...
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2answers
602 views

Can the Rpi 3 handle 4 cameras at the same time?

I want to take 4 pictures simultaneously with 4 different cameras on the Raspberry Pi. I have found this multicamera adapter, but I do not know whether the Rpi can handle taking 4 pictures at the ...
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1answer
285 views

How to display a stream of images? (Based on the “Capturing to a network stream” example of picamera)

Recently I tried to do a mini project: one RPI captures images using the camera module and sends the stream of images to another PRI (i.e. receiver PRI), and the receiver PRI continuously displays the ...
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0answers
231 views

live web server for seeing raspberry pi 3 camera

I have tried looking through some tutorials, but I can't find one that puts ALL the pieces together for what I am trying to accomplish, and explaining it in a crystal clear way for a noob. Here's what ...
6
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1answer
1k views

2 usb webcam on raspberry pi with OpenCV

I would like to connect 2 usb webcams to a RaspberryPI and be able to get at least 1920 x 1080 frames at 10 fps simultanously. This will be done using OpenCV. Has anyone done this and knows if this ...
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2answers
2k views

raspivid with awb off gives black image

I want to turn off auto white balance for my raspivid stream. However, when doing that, the image turns completely black. Why? And how do I fix this?
2
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1answer
79 views

Camera not in /dev/ how to create one

Does someone know if it's possible to create a new "/dev/video0" with some informations (e.g idVendor, idProduct, ...). Our problem is that when we plug in our camera, it doesn't create a "/dev/*" ...
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1answer
180 views

Why does the PiCamera() preview start bright and then immediately get dark when using a low frame rate and high shutter speed?

I'm adjusting some of the PiCamera parameters to make it work well in low light. However, when I preview the camera (in low light) the image starts off looking great and then immediately darkens. ...
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3answers
6k views

Python script in rc.local is not running and log file is not updated

I am trying to run a python script that uses the RPi Camera on boot from /etc/rc.local. This is the command I need to run: python ~/Documents/camera/camera.py --conf ~/Documents/camera/conf.json ...
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0answers
125 views

Live feed RPi camera to TV

I'm trying to get my RPi to live feed the RPi camera to a TV on boot. I have already a simple program in python that just outputs the camera feed, but when I run this program on boot it doesn't show ...
2
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0answers
834 views

How to capture non-fish-eye video with wide angle lens?

We're using this fisheye lens: https://www.amazon.com/SainSmart-Fish-Eye-Camera-Raspberry-Arduino/dp/B00N1YJKFS/ref=sr_1_1?ie=UTF8&qid=1511631477&sr=8-1&keywords=raspberry+pi+wide When we ...
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1answer
183 views

Cannot enable Rasberry Pi camera

Whenever I try uploading a code to run my camera it says camera not enabled , therefore I activated my camera from the rasberrypi configurator which did not work as well , also updated camera using ...
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2answers
81 views

How to configure RPi security camera to be active when our cell phones aren't on the wifi network?

I've seen quite a few security camera examples and many have options for a duty schedule that activates the camera during certain specified days/hours to set up a routine. However I have fairly ...
3
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2answers
2k views

Unable to capture image using the Raspberry Pi Camera Python

The raspistill -o image.jpg command successfully captures images. But when I try capturing from a really simple Python script, I get an error. The script is from picamera import PiCamera cam = ...
2
votes
1answer
6k views

Increasing fps of pi camera using OpenCV C++ implementation

I am using a NOIR Pi camera for my Raspberry Pi 3 module. I plan to run some high fps image processing algo using openCV in a C++ environment. However, I cant seem to obtain the video stream in a high ...
2
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1answer
175 views

NoIR Camera…Infrared?

So recently I found out that the NoIR module can see visible AND infrared. My question is If I make a box, and out my hand in it, and then on the other end of the box I place the camera in complete ...
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1answer
440 views

Can this Camera see near-infrared?

The camera I'm talking about is here- https://www.amazon.ca/Raspberry-Pi-Camera-Filter-Vision/dp/B00KX3HS4K My question is, is this camera a near-infrared camera?
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0answers
1k views

Raspistill in manual exposure

I found that using raspistill or Camera py module I cannot set lower speeds than 1/30" (converted to nano secs). I want manual camera settings ISO = value and ss = value All is fine in daylights but ...
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4answers
6k views

Raspberry Pi Camera Module not working (v1.3)

My Raspberry Pi Camera Module v1.3 is not working. I have tried taking a photo, and here is the error: pi@raspberrypi:~ $ raspistill -o image.jpg mmal: No data received from sensor. Check all ...
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1answer
587 views

Raspberry Camera V2 on Android [duplicate]

I have flashed android (can flash any version necessary to make this work) onto my Raspberry Pie 3 and would like to be able to use the Pi Camera V2. Ive plugged in the camera to the raspberry pi but ...
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1answer
93 views

How can I attach a Raspberry Pi Camera to my Pi for an image processing project?

I want to attach a Raspberry Pi Camera to my Raspberry Pi module for an image processing project. Basically, I want to enhance video in the dark. I am planning to do a project in which the video ...
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0answers
447 views

Streaming HLS from a video4linux2 virtual video device

I'm trying to accomplish a few things at the same time with the raspberry pi camera; create an HLS live stream take regular interval jpg snapshots and save them to disk irregularly record short ...
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1answer
9k views

Can I use the PI Camera Stream in Python on a PC?

So I got a Raspberry Pi Zero Wireless with the Pi camera and I would like to use the camera with OpenCV in Python. The problem is, I know I can do this easily on the Pi itself but I highly doubt the ...
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1answer
166 views

Connecting more than 2 V2 camera modules

I am trying to find out how to connect more than 2 x V2 8Mb camera modules to the Raspberry Pi 3b module so that I can have 3 images at once on a display screen.
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0answers
667 views

USB camera synchronization with external trigger

My project is to synchronize 4 usb cameras using a raspberry pi. Those 4 cameras use 8MP sensors, the SPCA2620 chip (quite new, no documentation) and have an external trigger line available. So far, ...
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1answer
2k views

Python multithreading and camera

I'm writing a python application which uses a PIR motion sensor to trigger the RPi camera (Rev. 1.3) and start a video. For this purpose I'm using the threading library, to achieve multithreading. At ...
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1answer
574 views

using an rpi as IP camera with minimal CPU usage?

I'm trying to get a pi happening as an IP camera, using a CSI camera module. I'd like to minimise CPU usage. I don't need motion detection, just to dump an image from the camera onto the network where ...
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0answers
722 views

how can I connect an IP cammera via ethernet to my Raspberry Pi 3?

I have an IP camera that I want to connect to my raspberry pi 3 using an ether net cord. I have struggled with this reading many articles, trying to configure the camera to have a static IP recieved ...
0
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1answer
171 views

How can any cellphone LCD be used as a portable monitor? [duplicate]

In simple, I just want to build some thing like : CC TV with small monitor and small camera (the smaller the both, the better). . For example, I need it to connect a camera so I can watch real time ...
1
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0answers
365 views

What is the camera matrix for picamera V2.1?

As you know, all cameras have original camera matrix and distortion coefficient values. Is there any guy who had already gotten exact camera matrix of picamera V2.1?
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0answers
1k views

High speed photography using RPi Camera module

I'm trying to capture high speed water flow movement in a small dark chamber with a cool white 5 W high power LED as a flasher. My target is to achieve quick exposure using 0.8 millisecond light pulse....

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