picamera | A pure Python interface to the Raspberry Pi camera module
kandi X-RAY | picamera Summary
kandi X-RAY | picamera Summary
A pure Python interface to the Raspberry Pi camera module
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Top functions reviewed by kandi - BETA
- Start recording
- Get a video encoder
- Get port and output port
- Check if camera is open
- Capture camera image
- Create an image encoder
- Get the image format
- Capture a sequence of images
- Returns an instance of ImageEncoder
- Capture the image
- Create the encoder for the given format
- Parse options
- Run the send loop
- Enable the adapter
- Start a preview
- Set the background color
- Handle a frame frame
- Split the output of the recording
- Called when the callback is received
- Add an overlay to the scene
- Handle a format changed event
- Copy data to a file
- Set image effect params
- Clear the buffer
- Decorator to enable the port
- Return a demosaic image
picamera Key Features
picamera Examples and Code Snippets
Lines of Code : 13License : Permissive (MIT)
Copyimport time
import picamera
with picamera.PiCamera() as camera:
camera.resolution = (1024, 768)
camera.start_preview()
# Camera warm-up time
time.sleep(2)
camera.capture('test.png')
camera.start_recording('my_video.h264', mo import time
with picamera.PiCamera() as camera:
camera.resolution = (2592, 1944)
camera.start_preview()
time.sleep(2)
camera.exif_tags['IFD0.Copyright'] = 'Copyright (c) 2018'
camera.capture('./foo.jpg')
camera.stop_preview() cd ~/hand-hygiene/intervention
python3 -m intervention_system.tools.mqtt_send_camera_params --target_name camera_1 # query camera parameters from camera 1
python3 -m intervention_system.tools.mqtt_send_camera_params --target_name camera_1 --roi_zoom Community Discussions
Trending Discussions on picamera
QUESTION
Context
I have a jenkins that builds a docker image for a raspberry pi 2. It is using buildx to emulate the ArmV7 environment during build. This worked great until recently I got random errors during installing the apk packages.
Dockerfile
...ANSWER
Answered 2021-Nov-22 at 14:18ok, looks like i found my solution here: https://gitlab.alpinelinux.org/alpine/aports/-/issues/12406
quote from Lyle Franklin:
I hit this error when trying to build a cross-platform ARM64 docker image from a AMD64 host. However, running
docker run --rm --privileged linuxkit/binfmt:v0.8 or update-binfmts --enableprior to running the build seems to avoid the issue. My understanding Docker will try to use upstream QEMU if it is installed and registered with the kernel, otherwise Docker will fallback to using a built-in forked version of QEMU. The build error above only showed up for me with the forked QEMU.
So I will probably add docker run --rm --privileged linuxkit/binfmt:v0.8 && update-binfmts --enable to my pipeline file if I encounter the error again, for now running it once solved the issue.
QUESTION
we are sending a weather ballon to space with a raspberry pi sense hat and rasp pi camera V2 we have the code written to save to file
This is the code to take pictures
...ANSWER
Answered 2021-Nov-15 at 23:10What I would do is take the code for each action taking a photo and collecting sensor data and create a function for each. Then you could use a single loop that calls each function. I quickly put together an example of how this could look with your code that uses a single main loop to collect a photo about every 5 seconds and sensor data about every second.
QUESTION
I have a Hello World program in python based on kivy. The application is workig if I launch it from the vs code. I have generate a standalone exe from this using pyinstaller. The exe is generated successfully but it is not running. just a flash screen is coming and going off.
Below is the program code :
...ANSWER
Answered 2021-Aug-24 at 14:43try this :
QUESTION
I have a simple project with Raspi 4 with camera which the project is similar with car's reverse camera but without sensor. Here my code:
...ANSWER
Answered 2021-Aug-21 at 17:15The value assigned to pt1 and pt2 should not have a floating point.
So this is working fine.
QUESTION
I have a frame that pops up from a raspberry pi broadcasting its signal over the network. The camera feed opens and runs fine in the frame I have opening with cv2 in line 37. However, I am trying to show the camera feed in tkinter as you can see by line 42 and on. To summarize in short: I need to display the camera feed in tkinter. Any help is greatly appreciated.
...ANSWER
Answered 2021-Jul-26 at 08:35This is example which start socket server in thread and next display tkinter.
At start tkinter display empty image and every 100ms replaces it with current image (which still is empty).
When client connects then server replace image so automatically tkinter display it in window.
When client disconnects then server again put empty image.
Window has `Button to save current screen in file - it shows that window doesn't freeze.
When you close window then it stops server. Problem is that accept() is blocking thread and I use daemon=True to kill thread when program stop running.
QUESTION
I'm sending video as a sequence of images (equals zmq messages) but sometimes, perhaps when the network is slow, they are received at a slower rate than they're sent and a growing latency appears, seemingly up to about a minute of video or 100s of images or megabytes of data. It usually clears itself eventually with the subscriber receiving messages at a faster rate than the publisher sends.
Instead, I want it to discard missed messages the same way it's supposed to if the subscriber is too slow recving them. I hoped zmq.CONFLATE=1 would do this but it doesn't. How then? I suspect they're being buffered at the publisher, which is not supposed to have any zmq buffer, or in the network stack somehow.
ANSWER
Answered 2021-Jun-29 at 16:14I am not sure which version of python zmq you are using but based on the underlying c++ libzmq you need to:
- Set the ZMQ_SNDHWM socket option on the server socket
- Set the ZMQ_RCVHWM socket option on the client socket.
These options limit the number of messages to queue per completed connection in the case of pub/sub. If the queue grows larger than the HWM (high water mark) the messages will be discarded.
Also turn off conflate as that will interfere with these options.
QUESTION
I got an Raspberry Pi 4 4GB running Ubuntu 21.04 Desktop. I want to connect via ssh to my Raspberry Pi Zero (without Wireless) running Raspbian lite. For the ssh setup i followed the instructions stated here: https://raspberrypi.stackexchange.com/questions/66431/headless-pi-zero-ssh-access-over-usb I have done the configuration on the Zero and added a usb0 file to ^path_to_mounted_sd^/rootfs/etc/network/interfaces.d/ containing following lines:
...ANSWER
Answered 2021-Jun-23 at 14:21I solved the problem! It seems that you need to specify through what interface you want to connect to this specific IP Adress. Recongnized that when I had switched of my wifi and I got the error: Could not reach network.
So when you specifiy the interface for the IP like this:
QUESTION
I'm working on a project for my computer science class. I've attached a camera and a distance sensor to my raspberry pi. the basic idea of the program is that that the pi will get a reading from the motion sensor and then depending on the reading it will take a picture with the camera and display a different camera effect and then keep updating the distance and the pictures on a loop.
My problem is that it will get stuck on the first camera effect that is activated, what I mean by this is if the distance sensor doesn't detect anything it will take a picture with no effect, if it picks up a closer reading it will display a negative, but if it doesn't detect anything initially it will continue to take pictures with no effect no matter what the reading actually is.
It also works the other way around as in if it detects something close it will continue to display a negative picture. I'm assuming what I did wrong has something to do with how I set up my loops.
...ANSWER
Answered 2021-May-21 at 17:58Try this:
QUESTION
I'm trying to use an example from https://github.com/ageitgey/face_recognition
for face detection on Raspberry Pi.
This is the 'facerec_on_raspberry_pi.py' code:
...ANSWER
Answered 2021-Apr-19 at 14:00You can use opencv API directly.
Instead of creating a PiCamera object like:
QUESTION
I am looking for a simple way for to do real-time face detection and capture using open-cv and Picamera in Python. I figured out how to recognize the face from and image file, but I dont' know the rest. I am trying to have a real-time stream of video, and when a face is detected in that video, the camera takes a picture of the face. Is this possible using open-cv and Python? NOTE: there is a difference between face recognition and face detection. I am asking for help on how to detect the face and take a picture of it, not the recognition part. Thanks for any help!
...ANSWER
Answered 2021-Apr-04 at 21:46my two cents are, if you have the original frame from the live video stream, and you can detect which frame has a face. Then can you just save that frame as a png or jpeg image file, no need to take any further image again? I know there can be situations where we need to take a new image, but just one solution I thought of is this.
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Install picamera
You can use picamera like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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