Questions tagged [picamera]
140 questions
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White/ Blue balance error in high resolution with opencv and picamera (V2)
my problem is when i set the resolution higher than 640x480, the output colors are only in the bottom part right. The rest of the output has a blueish color.
I have a RaspyberryPi4 with 4GB ram and a PiCamera V2. The CPU usage is not more than…
Jeffote
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1 answer
Extract and analyze frames while recording using PiCamera, OpenCV
I'm streaming the video from my raspberryPi using piCamera to a web socket, so that I can view it within my local network.
I want to make my own motion detection script from scratch, therefore I want to get the first image from the video stream…
Niccolò Diana
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Is there a way to use ROI (Region of Interest) through a Rapsberry Pi in Code?
I'm looking to take images using my raspberry pi v2 camera module and extract a specific part of those using ROI.
-roi 0.5,0.5,0.25,0.25
However, ROI seems to only be a flag for taking still images through the command line, is there any way to…
yupthatsme
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Let multiple users stream a webcam in Flask
I've written a website written in python by using the Flask framework. I tried to show a live video stream on the website but it seems like only one client can stream the video and even that stream fails after 30 seconds...
The website is deployed…
Sven Onderbeke
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Issue with loading an image into imageview android
I am trying to stream video from a raspberry pi camera to an android application. My raspberry pi's code is as follows:
import io
import socket
import struct
import time
import…
Vivekh
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1 answer
Python and PiCamera Color Detection Boolean Issues
I'm fairly new with Python and trying to code a way a PiCamera to pick up on different colors and react based off of that. My current attempt for each color is to take a picture and detect the color involved. Some example code is below.
def…
Centerblock
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1 answer
Raspberry Pi 4B - VLC player - Pir Sensor - Camera
I'm starting to know Python, so you can say I'm a newby.
For Halloween I'm working with a Python script for a Scare. The idea is to show a nice picture (a paused video) on a tv screen and when motion is detected the video is going to play the rest…
Wessie
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Purple + White Bar in Right Image With Stereo Side By Side Recording + Streaming
I'm using a StereoPi v2 Camera Kit and running the OpenCV OS that came with the pi.
I'm running into an issue where there is a purple and white flickering column in the right image of a side by side stereo recording. This happens with both raspivid,…
Skippy2626
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Failing to view picamera on Raspberry Pi 3 when running headless
I am trying to run my Raspberry Pi 3B+ headless. I need to use a picamera, but it is not showing anything while running headless.
I know that the reason for this behavior is that the RPi doesn't create a virtual screen if no monitor is plugged in…
Jeppe
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OpenCV BackgroundSubtractorMOG2 seems to return false-positive pixels
I have the following code with which, I am trying to detect movements (ideally with adjustable threshold) in specific regions of a video (roi_masks). I am just doing something fatally wrong, because it returns false positive detections sometimes…
peter
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my code throws TypeError: only size-1 arrays can be converted to Python scalars
I'm trying to get the NDVI of a plant image. As probably you know this project is on the Internet and for me, it was working some years ago. Now that I am trying to use it again, I have a mistake in the last part of the process, here the complete…
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Why is Python Flask in Debug Mode Causing Raspberry Pi Camera Resource Error?
I am working on a small project at home with a Raspberry Pi using Python to sense motion via a PIR and record a 30 second video when motion is detected - using a night vision camera. This part of the project is working and I decided to use Flask to…
Kapi
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Can not use Pi Camera Module 3 (IMX708) with RaspberryPi 4B (4GB) - Raspbian (bullseye)
I am trying to use the Pi Camera Module 3 on the Raspberry Pi 4B. I have tried running a Python script which calls the module in the terminal, and the output shows an error message:
cshwstem@raspberrypi:~/Desktop $ python3 preview.py
Traceback…
Shuaiwen Cui
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picamera2 interfacing with ImageAI yolov3 ValueError: Ensure you specified correct input image, input type, output type and/or output image path
So i am using a raspberry pi 4 8gb running RPi OS and i'm having trouble with the yolov3 module of ImageAI 2.1.6. It's not accepting my picamera2 images. I can't seem to find a solution to my issue. When i use cv2 as the camera on my regular…
DrSolidDevil
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What's the fastest way to trigger a PiCamera using a light barrier for capturing small, fast-moving objects?
I want to trigger a PiCamera by a light barrier to catch up small, fast moving objects with the Camera.
Setup:
IR-Light barrier module connected to GPIO Pin 4 on a Raspberry Pi zero as well as a Raspberry Pi Camera
from picamera import…
Liam
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