# \#camera **URL:** https://forum.opencv.org/tag/camera/218.md [Latest](https://forum.opencv.org/latest.md) · [Categories](https://forum.opencv.org/categories.md) · [Tags](https://forum.opencv.org/tags.md) --- ## [What camera to use for low-latency with high fps?](https://forum.opencv.org/t/what-camera-to-use-for-low-latency-with-high-fps/24414)
**Author:** [@snoriman](https://forum.opencv.org/u/snoriman)\ **Replies:** 1\ **Last updated:** [April 3, 2026, 9:20am UTC](https://forum.opencv.org/t/what-camera-to-use-for-low-latency-with-high-fps/24414 "2026-04-03T09:20:57Z")
I’m exploring cameras for a computer vision project where I want to run AI models in real time to do sport analysis. One of the goals is to track the players position in real time. After some initial research I learned t… --- ## [Drift near FOV edges with ArduCam pose estimation (possible vignetting issue?)](https://forum.opencv.org/t/drift-near-fov-edges-with-arducam-pose-estimation-possible-vignetting-issue/23852)
**Author:** [@Costin](https://forum.opencv.org/u/Costin)\ **Replies:** 1\ **Last updated:** [September 3, 2025, 4:49pm UTC](https://forum.opencv.org/t/drift-near-fov-edges-with-arducam-pose-estimation-possible-vignetting-issue/23852 "2025-09-03T16:49:19Z")
Hi, I implemented a multi-view geometry pipeline in ROS to track an underwater robot’s pose using two fixed cameras: GoPro (bird’s-eye view) ArduCam B0497 (side view on tripod) A single fixed ArUco marker is vis… --- ## [Cant open 2 camera PS3 Eye](https://forum.opencv.org/t/cant-open-2-camera-ps3-eye/23374)
**Author:** [@Gvit0](https://forum.opencv.org/u/Gvit0)\ **Replies:** 5\ **Last updated:** [July 29, 2025, 7:12am UTC](https://forum.opencv.org/t/cant-open-2-camera-ps3-eye/23374 "2025-07-29T07:12:59Z")
I can’t connect 2 PS3 Eye cameras. There are 2 ports via from pygrabber.dshow\_graph import FilterGraph def get\_available\_cameras() : devices = FilterGraph().get\_input\_devices() available\_cameras = {} for… --- ## [initUndistortRectifyMap does not return same undistorted image as manual undistortion](https://forum.opencv.org/t/initundistortrectifymap-does-not-return-same-undistorted-image-as-manual-undistortion/21117)
**Author:** [@zeellos](https://forum.opencv.org/u/zeellos)\ **Replies:** 3\ **Last updated:** [May 31, 2025, 6:10am UTC](https://forum.opencv.org/t/initundistortrectifymap-does-not-return-same-undistorted-image-as-manual-undistortion/21117 "2025-05-31T06:10:04Z")
I have been trying to replicate what initUndistortRectifyMap does for my application. For some reason, when I do manual undistortion, I get different result than using initUndistortRectifyMap. I feel I am following the … --- ## [Choosing the Right Imaging Camera Module for Embedded Vision Projects](https://forum.opencv.org/t/choosing-the-right-imaging-camera-module-for-embedded-vision-projects/20546)
**Author:** [@romana\_diana](https://forum.opencv.org/u/romana_diana)\ **Replies:** 1\ **Last updated:** [March 17, 2025, 4:35pm UTC](https://forum.opencv.org/t/choosing-the-right-imaging-camera-module-for-embedded-vision-projects/20546 "2025-03-17T16:35:23Z")
I was going through some documentation on Imaging’s camera modules, and I got a bit confused about selecting the right MIPI CSI-2 interface for my application. I’m working on an embedded vision project with my team, and … --- ## [Camera Calibration Intrinsic Parameter Verification](https://forum.opencv.org/t/camera-calibration-intrinsic-parameter-verification/15864)
**Author:** [@Kapil\_Mulchandani](https://forum.opencv.org/u/Kapil_Mulchandani)\ **Replies:** 7\ **Last updated:** [November 16, 2024, 5:23am UTC](https://forum.opencv.org/t/camera-calibration-intrinsic-parameter-verification/15864 "2024-11-16T05:23:01Z")
Hello All, I’m trying to calibrate a stereo camera pair. I’m using the openCV and chessboard calibration methods to calibrate the cameras. I want to understand how I can verify whether the camera calibration parameters … --- ## [I can't open the camera module in the raspberry pi using OpenCV](https://forum.opencv.org/t/i-cant-open-the-camera-module-in-the-raspberry-pi-using-opencv/18936)
**Author:** [@Balaji\_wcm](https://forum.opencv.org/u/Balaji_wcm)\ **Replies:** 1\ **Last updated:** [October 10, 2024, 11:52am UTC](https://forum.opencv.org/t/i-cant-open-the-camera-module-in-the-raspberry-pi-using-opencv/18936 "2024-10-10T11:52:21Z")
Hello Guys, Currently I am using raspberry pi I want to open the camera in the raspberry pi using OpenCV. I tried different method it didn’t open Can anyone suggest anyways to open the Rpi Camera. Thank you, --- ## [Inconsistent Frame Interval with 60fps VideoCapture using CSI Camera on NVIDIA Jetson Orin Nano](https://forum.opencv.org/t/inconsistent-frame-interval-with-60fps-videocapture-using-csi-camera-on-nvidia-jetson-orin-nano/18486)
**Author:** [@dahlia](https://forum.opencv.org/u/dahlia)\ **Replies:** 6\ **Last updated:** [August 16, 2024, 7:36pm UTC](https://forum.opencv.org/t/inconsistent-frame-interval-with-60fps-videocapture-using-csi-camera-on-nvidia-jetson-orin-nano/18486 "2024-08-16T19:36:36Z")
Hello everyone, I am currently working on a project where I am using an NVIDIA Jetson Orin Nano with a Raspberry Pi 2 camera module connected via CSI interface. I have configured the camera to capture video at 1280x720 … --- ## [Camera calibration with point projected at infinity](https://forum.opencv.org/t/camera-calibration-with-point-projected-at-infinity/18030)
**Author:** [@Casimir\_FAYT](https://forum.opencv.org/u/Casimir_FAYT)\ **Replies:** 10\ **Last updated:** [June 21, 2024, 9:15pm UTC](https://forum.opencv.org/t/camera-calibration-with-point-projected-at-infinity/18030 "2024-06-21T21:15:19Z")
Hello, I am trying to use the OpenCV functions to calibrate a camera (extrinsic, intrinsic parameters, distortion coefficients, focal lengths, camera center, etc). However I am not using several images of a checkerboar… --- ## [Is there any reason why projectPoints doesn't compute Jacobian for object points?](https://forum.opencv.org/t/is-there-any-reason-why-projectpoints-doesnt-compute-jacobian-for-object-points/18004)
**Author:** [@horth](https://forum.opencv.org/u/horth)\ **Replies:** 0\ **Last updated:** [June 19, 2024, 7:40am UTC](https://forum.opencv.org/t/is-there-any-reason-why-projectpoints-doesnt-compute-jacobian-for-object-points/18004 "2024-06-19T07:40:52Z")
I see that the Jacobian computation is implemented in the internal function and may be computed when cvProjectPoints2Internal is called from cvCalibrateCamera2Internal, but when cvProjectPoints2Internal is called from cv… --- ## [I am not able to display and save a video from my Flir hadron camera using Gstreamer command in python3 Opencv](https://forum.opencv.org/t/i-am-not-able-to-display-and-save-a-video-from-my-flir-hadron-camera-using-gstreamer-command-in-python3-opencv/17370)
**Author:** [@ihssane](https://forum.opencv.org/u/ihssane)\ **Replies:** 1\ **Last updated:** [April 29, 2024, 8:50am UTC](https://forum.opencv.org/t/i-am-not-able-to-display-and-save-a-video-from-my-flir-hadron-camera-using-gstreamer-command-in-python3-opencv/17370 "2024-04-29T08:50:55Z")
I’m trying to display and save my Flir Hadron camera videos using gstreamer pipelines in Python 3 OpenCV. I have a perfectly working Gstreamer pipelines that are able to display and save videos with high resolution, but … --- ## [How to Filesink and Appsink simultaneously in OpenCV Gstreamer. (Gstreamer pipeline included)](https://forum.opencv.org/t/how-to-filesink-and-appsink-simultaneously-in-opencv-gstreamer-gstreamer-pipeline-included/915)
**Author:** [@Jahwan](https://forum.opencv.org/u/Jahwan)\ **Replies:** 2\ **Last updated:** [April 28, 2024, 2:11pm UTC](https://forum.opencv.org/t/how-to-filesink-and-appsink-simultaneously-in-opencv-gstreamer-gstreamer-pipeline-included/915 "2024-04-28T14:11:59Z")
Hi, I’m developing C++ based multi v4l2 camera application on Jetson AGX Xavier. Current Status \[1 V4L2, 2 V4L2 ... N V4L2 \] \>-----\[App\]-----\> \[Output\] It requires N x cameras’ original videos and one more processed … --- ## [projectPoints() point visibility with distortion](https://forum.opencv.org/t/projectpoints-point-visibility-with-distortion/7055)
**Author:** [@zlopi](https://forum.opencv.org/u/zlopi)\ **Replies:** 3\ **Last updated:** [April 12, 2024, 10:58pm UTC](https://forum.opencv.org/t/projectpoints-point-visibility-with-distortion/7055 "2024-04-12T22:58:06Z")
I want to project 3D points to 2D image of a camera with known intrinsic and extrinsic parameters. I would also want to compute visibility for each point based on the camera pose. The problem that when I use distortion c… --- ## [Cannot read from camera](https://forum.opencv.org/t/cannot-read-from-camera/16727)
**Author:** [@Mohamed-Amine\_Ben\_Na](https://forum.opencv.org/u/Mohamed-Amine_Ben_Na)\ **Replies:** 0\ **Last updated:** [March 7, 2024, 7:17am UTC](https://forum.opencv.org/t/cannot-read-from-camera/16727 "2024-03-07T07:17:35Z")
Hi everyone, I’m using below enviroment to build a python object detection using stream from camera. python: 3.12 opencv-python: 4.9.0.80 ultralytics: 8.1.24 camera: laptop camera/usb HD microsft camera OS: windows… --- ## [How many parallel VideoCapture's can one camera handle?](https://forum.opencv.org/t/how-many-parallel-videocaptures-can-one-camera-handle/16419)
**Author:** [@Kakinsky](https://forum.opencv.org/u/Kakinsky)\ **Replies:** 2\ **Last updated:** [February 9, 2024, 7:41pm UTC](https://forum.opencv.org/t/how-many-parallel-videocaptures-can-one-camera-handle/16419 "2024-02-09T19:41:48Z")
I want to read from one camera in many parallel processes. Here is what I’ve tried. from multiprocessing import Process import cv2 import time import random def get\_capture(): time.sleep(random.randint(0, 3)) … --- ## [Opencv IP camera lag and delay problem](https://forum.opencv.org/t/opencv-ip-camera-lag-and-delay-problem/14561)
**Author:** [@Musa](https://forum.opencv.org/u/Musa)\ **Replies:** 7\ **Last updated:** [January 31, 2024, 1:19am UTC](https://forum.opencv.org/t/opencv-ip-camera-lag-and-delay-problem/14561 "2024-01-31T01:19:03Z")
Hi everyone, New member on this forum. I have a problem. I’ve written a license plate recognition system program. I’m running the code with Jetson Nano. When I use a local USB webcam, I don’t observe any freezing or lag… --- ## [Powerline frequency problem](https://forum.opencv.org/t/powerline-frequency-problem/15641)
**Author:** [@MobileRobotics](https://forum.opencv.org/u/MobileRobotics)\ **Replies:** 10\ **Last updated:** [December 1, 2023, 1:48am UTC](https://forum.opencv.org/t/powerline-frequency-problem/15641 "2023-12-01T01:48:26Z")
Black horizontal lines appear on orbbec gemini e camera. I also tried changing the power\_line\_frequency value, but it didn’t work. What values should I modify? Below are the camera properties obtained usi… --- ## [My exe keeps flashing back!](https://forum.opencv.org/t/my-exe-keeps-flashing-back/15532)
**Author:** [@ZBF](https://forum.opencv.org/u/ZBF)\ **Replies:** 0\ **Last updated:** [November 15, 2023, 4:32pm UTC](https://forum.opencv.org/t/my-exe-keeps-flashing-back/15532 "2023-11-15T16:32:44Z")
I have no idea about this.My code has no errors,and I try to install Xvid,but nothing is useful.It keeps flashing back Here is my code #include \ #include \ #include\ #include \ **Author:** [@BBI\_YossarianKing](https://forum.opencv.org/u/BBI_YossarianKing)\ **Replies:** 2\ **Last updated:** [October 16, 2023, 11:31pm UTC](https://forum.opencv.org/t/how-to-open-camera-capture-while-in-use-in-another-program/14839 "2023-10-16T23:31:07Z") I wrote an app to capture and display the video from my webcam, with a slider to change the camera exposure. Works great. However, I want this so I can adjust my camera exposure before entering a web meeting, and I woul… --- ## [Is it possible to capture 8mp image using opencv?](https://forum.opencv.org/t/is-it-possible-to-capture-8mp-image-using-opencv/14102)
**Author:** [@Doctor\_pepper](https://forum.opencv.org/u/Doctor_pepper)\ **Replies:** 7\ **Last updated:** [August 3, 2023, 5:18am UTC](https://forum.opencv.org/t/is-it-possible-to-capture-8mp-image-using-opencv/14102 "2023-08-03T05:18:04Z")
i tried capture 8mp image in opencv. but saved image’s resolution is always (1944, 2592) ← 5mp How to capture 8mp image? i tried below import cv2 cap = cv2.VideoCapture(0) cap.set(cv2.CAP\_PROP\_FRAME\_WIDTH, 3264) c… --- ## [Finding the best camera with optimal API/openCV support](https://forum.opencv.org/t/finding-the-best-camera-with-optimal-api-opencv-support/13938)
**Author:** [@j\_unk](https://forum.opencv.org/u/j_unk)\ **Replies:** 0\ **Last updated:** [July 19, 2023, 11:19am UTC](https://forum.opencv.org/t/finding-the-best-camera-with-optimal-api-opencv-support/13938 "2023-07-19T11:19:44Z")
Hi y’all! I have recently started a project where I need multiple IP camera’s to do some automated tests using computer vision. At first, I bought a HikVision camera that had great specs, but when I started coding, it t… --- ## [Calibration PTZ camera with OpenCV's calibrateCamera. How to fix certain parameters across frames?](https://forum.opencv.org/t/calibration-ptz-camera-with-opencvs-calibratecamera-how-to-fix-certain-parameters-across-frames/13693)
**Author:** [@mazatov](https://forum.opencv.org/u/mazatov)\ **Replies:** 8\ **Last updated:** [June 29, 2023, 8:06am UTC](https://forum.opencv.org/t/calibration-ptz-camera-with-opencvs-calibratecamera-how-to-fix-certain-parameters-across-frames/13693 "2023-06-29T08:06:24Z")
I have N images from a PTZ camera with some point correspondences in each frame. The problem is the images are taken at different zoom. I am wondering how to use cv2.calibrateCamera for these N images so that some para… --- ## [Camera Intrinsics / Calibration DB / Library](https://forum.opencv.org/t/camera-intrinsics-calibration-db-library/12572)
**Author:** [@Alex\_Rothberg](https://forum.opencv.org/u/Alex_Rothberg)\ **Replies:** 3\ **Last updated:** [March 29, 2023, 1:34pm UTC](https://forum.opencv.org/t/camera-intrinsics-calibration-db-library/12572 "2023-03-29T13:34:14Z")
Is there any source of pre-calculated Camera Intrinsics / Calibrations? For example if I wanted to ship an app that can run on a wide array of devices, it would be ideal to have calibrations preloaded and it may be impra… --- ## [Slow camera initialization](https://forum.opencv.org/t/slow-camera-initialization/12179)
**Author:** [@Sanni47](https://forum.opencv.org/u/Sanni47)\ **Replies:** 1\ **Last updated:** [February 28, 2023, 7:04pm UTC](https://forum.opencv.org/t/slow-camera-initialization/12179 "2023-02-28T19:04:03Z")
Hi, trying to start simple code to show in the window video from webcam, but window with video appear only after 5 minutes, what is wrong? import cv2 # Open camera cap = cv2.VideoCapture(0) # Changing size of slide ca… --- ## [How to find fourcc value for "RGB 32" format](https://forum.opencv.org/t/how-to-find-fourcc-value-for-rgb-32-format/11823)
**Author:** [@kallabee](https://forum.opencv.org/u/kallabee)\ **Replies:** 0\ **Last updated:** [January 31, 2023, 3:06am UTC](https://forum.opencv.org/t/how-to-find-fourcc-value-for-rgb-32-format/11823 "2023-01-31T03:06:09Z")
Hi. I have an HDMI/USB adaptor which can capture video as RGB/YUV. When I use AMCap, a famous Windows application to capture video, I can select format from “YUY2” and “RGB 32” and capture video successfully. I want to… --- ## [Error when opening two cameras in FullHD using MSMF backend](https://forum.opencv.org/t/error-when-opening-two-cameras-in-fullhd-using-msmf-backend/11098)
**Author:** [@vnd](https://forum.opencv.org/u/vnd)\ **Replies:** 2\ **Last updated:** [November 25, 2022, 2:40pm UTC](https://forum.opencv.org/t/error-when-opening-two-cameras-in-fullhd-using-msmf-backend/11098 "2022-11-25T14:40:07Z")
I’m trying to get FullHD picture from two UC70 web cameras connected to a PC, however reading frame from the second camera fails with videoio(MSMF): can't grab frame. Error: -2147483638. Checked with OpenCV 4.5.1 and 4.6… --- ## [Not able to set some parameters of camera](https://forum.opencv.org/t/not-able-to-set-some-parameters-of-camera/10194)
**Author:** [@Jan\_Egil\_Glaestad](https://forum.opencv.org/u/Jan_Egil_Glaestad)\ **Replies:** 1\ **Last updated:** [September 14, 2022, 11:22am UTC](https://forum.opencv.org/t/not-able-to-set-some-parameters-of-camera/10194 "2022-09-14T11:22:32Z")
Im using a ps4 camera and this driver: GitHub - Hackinside/PS4-CAMERA-DRIVERS: Windows drivers ( WIP) with the “many-cam” sw, i am able to set gain and exposure time. when i try this in opencv, i dont succeed. Some para… --- ## [How does solvePnP deal with distortion](https://forum.opencv.org/t/how-does-solvepnp-deal-with-distortion/8486)
**Author:** [@rool12](https://forum.opencv.org/u/rool12)\ **Replies:** 3\ **Last updated:** [April 28, 2022, 4:48pm UTC](https://forum.opencv.org/t/how-does-solvepnp-deal-with-distortion/8486 "2022-04-28T16:48:32Z")
Hey guys, I’ve a camera with obvious distortion. I calibrated this camera to receive the camera intrinsic matrix and the distortion parameters. When you undistort your camera you’ve two options: Undistort your image… --- ## [Infos about mapping3d](https://forum.opencv.org/t/infos-about-mapping3d/5378)
**Author:** [@lben0110](https://forum.opencv.org/u/lben0110)\ **Replies:** 3\ **Last updated:** [October 13, 2021, 2:55am UTC](https://forum.opencv.org/t/infos-about-mapping3d/5378 "2021-10-13T02:55:33Z")
Hi @Tetragramm, I’m interested in your 3Dmapping application, developped in the opencv\_contrib on your github and I have some questions, I hope you can help me with. My use-case consists on estimating 3d detected objec…