id stringlengths 16 145 | text stringlengths 1 179k | title stringclasses 1
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|---|---|---|
picamera_basic_advanced_recipes/18461_6_0.txt | * [ Actions Automate any workflow ](https://github.com/features/actions)
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picamera_basic_advanced_recipes/picamera_basic_recipes_8_0.txt | ## 3.8. Capturing to a network stream ¶
This is a variation of Capturing timelapse sequences . Here we have two
scripts: a server (presumably on a fast machine) which listens for a
connection from the Raspberry Pi, and a client which runs on the Raspberry Pi
and sends a continual stream of images to the server. We... | |
picamera_basic_advanced_recipes/18461_170_0.txt | Sorry, something went wrong. | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_2_0.txt | [  ](/questions/) | |
picamera_basic_advanced_recipes/18461_128_0.txt | [ 
](/alalek) [ alalek ](/alalek) mentioned this issue Nov 6, 2020 | |
picamera_basic_advanced_recipes/18461_363_0.txt | --- | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_40_0.txt | can you add cv2.namedWindow('Butterfly',cv2.WINDOW_NORMAL) before imshow ? | |
picamera_basic_advanced_recipes/18461_125_0.txt | --- | |
picamera_basic_advanced_recipes/18461_252_0.txt | 👍 1 GQster reacted with thumbs up emoji | |
picamera_basic_advanced_recipes/sshx11forwardingprob_29_0.txt | However, If you convert the numpy arrays (from your OpenCV images) to real RGB images, you will be able to display them using image.show(): | |
picamera_basic_advanced_recipes/18461_238_0.txt | ### | |
picamera_basic_advanced_recipes/18461_143_0.txt | ### | |
picamera_basic_advanced_recipes/18461_347_0.txt | All reactions | |
picamera_basic_advanced_recipes/243406_31_0.txt | // Done handling output image, don't forget to unlock it.
CHECK_STATUS(vpiImageUnlock(gradient)); | |
picamera_basic_advanced_recipes/18461_194_0.txt | Copy link | |
picamera_basic_advanced_recipes/243406_27_0.txt |
Then we can show the output with the following changes to the _01-convolve_2d_
sample, | |
picamera_basic_advanced_recipes/18461_210_0.txt | 👍 2 alalek and changtimwu reacted with thumbs up emoji | |
picamera_basic_advanced_recipes/18461_257_0.txt | Copy link | |
picamera_basic_advanced_recipes/18461_129_0.txt | [ error: (-2:Unspecified error) Can't initialize GTK backend in function
'cvInitSystem' #18666 ](/opencv/opencv/issues/18666) | |
picamera_basic_advanced_recipes/picamera_advanced_recipes_9_0.txt | ## 4.9. Rapid capture and streaming ¶
Following on from Rapid capture and processing , we can combine the video
capture technique with [ Capturing to a network stream
](recipes1.html#streaming-capture) . The server side script doesn’t change (it
doesn’t really care what capture technique is being used - it just re... | |
picamera_basic_advanced_recipes/18461_299_0.txt | --- | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_90_0.txt | [ OpenCV + CUDA + OSX (10.8.3) ](/question/13579/opencv-cuda-osx-1083/) | |
picamera_basic_advanced_recipes/18461_111_0.txt | **[ IstiakFahim28 ](/IstiakFahim28) ** commented Nov 1, 2020 | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_89_0.txt | [ Problem with imshow in opencv 2.4.5 and ubuntu 13.04 [closed]
](/question/13065/problem-with-imshow-in-opencv-245-and-ubuntu-1304/) | |
picamera_basic_advanced_recipes/18461_193_0.txt | [ 
](/TVI-BIZ) | |
picamera_basic_advanced_recipes/sshx11forwardingprob_21_0.txt | Registered: Jun 2010
Location: Wiltshire, UK
Distribution: Void, Linux From Scratch, Slackware64
Posts: 3,152 | |
picamera_basic_advanced_recipes/18461_44_0.txt | Additional navigation options | |
picamera_basic_advanced_recipes/18461_22_0.txt | Search or jump to... | |
picamera_basic_advanced_recipes/243406_39_0.txt | Copyright © 2024 NVIDIA Corporation | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_39_0.txt | [ 
](/users/414443/annamp/) [ AnnaMP ](/users/414443/annamp/) ( 2019-01-24
06:23:34 -0600 ) edit | |
picamera_basic_advanced_recipes/18461_300_0.txt | All reactions | |
picamera_basic_advanced_recipes/picamera_advanced_recipes_1_0.txt | ## 4.1. Capturing to a numpy array ¶
Since 1.11, picamera can capture directly to any object which supports
Python’s buffer protocol (including numpy’s [ ` ndarray `
](https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray
"\(in NumPy v1.15\)") ). Simply pass the object as the destina... | |
picamera_basic_advanced_recipes/243406_5_0.txt | Hi, I’m trying to show the output image of vpi program. why can not make it
successfully when i add imshow() of opencv to a vpi program, while imread()
and imwrite() work well? Any help appriciated!——version vpi1.1, platform
jetson tx2a , C++ | |
picamera_basic_advanced_recipes/18461_348_0.txt | Sorry, something went wrong. | |
picamera_basic_advanced_recipes/243406_22_0.txt | [ AastaLLL ](https://forums.developer.nvidia.com/u/AastaLLL) February 20,
2023, 5:57am 13 | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_9_0.txt | edit | |
picamera_basic_advanced_recipes/243406_10_0.txt | [ 
vpi 898×599 51.2 KB ](https://global.discourse-
cdn.com/nvidia/original/3X/4/d/4da677b17d251a280cdedd18d1ce68b9c3c1228b.png
"vpi") | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_60_0.txt | add a comment see more comments | |
picamera_basic_advanced_recipes/18461_214_0.txt | [
](/erdemozc) | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_17_0.txt | I'm literally just starting out, but already stuck .. I'm trying to get an
image to display, but ` imshow() ` only opens an empty window. I don't get any
errors, and the program doesn't hang (pressing a key closes the window just
fine) - it's just that there is no image in the window. | |
picamera_basic_advanced_recipes/18461_247_0.txt | ### | |
picamera_basic_advanced_recipes/picamera_basic_recipes_2_0.txt | ## 3.2. Capturing to a stream ¶
Capturing an image to a file-like object (a [ ` socket() `
](https://docs.python.org/3.4/library/socket.html#socket.socket "\(in Python
v3.4\)") , a [ ` io.BytesIO `
](https://docs.python.org/3.4/library/io.html#io.BytesIO "\(in Python v3.4\)")
stream, an existing open file object, ... | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_43_0.txt | [ 
](/users/8129/lberger/) [ LBerger ](/users/8129/lberger/) ( 2019-01-24
06:50:40 -0600 ) edit | |
picamera_basic_advanced_recipes/18461_182_0.txt | [
](/w4w4n78) | |
picamera_basic_advanced_recipes/18461_106_0.txt | All reactions | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_44_0.txt | hm, that doesn't make any difference either ... :-( Sorry - overlooked the C++
question - idk ... | |
picamera_basic_advanced_recipes/18461_43_0.txt | * [ Code ](/opencv/opencv)
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picamera_basic_advanced_recipes/sshx11forwardingprob_8_0.txt | Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you wa... | |
picamera_basic_advanced_recipes/picamera_basic_recipes_6_0.txt | ## 3.6. Capturing timelapse sequences ¶
The simplest way to capture long time-lapse sequences is with the [ `
capture_continuous() ` ](api_camera.html#picamera.PiCamera.capture_continuous
"picamera.PiCamera.capture_continuous") method. With this method, the camera
captures images continually until you tell it to st... | |
picamera_basic_advanced_recipes/18461_86_0.txt | **[ BoShaoLi ](/BoShaoLi) ** commented Oct 29, 2020 | |
picamera_basic_advanced_recipes/18461_32_0.txt | ## Use saved searches to filter your results more quickly | |
picamera_basic_advanced_recipes/18461_87_0.txt | I have the same question. Did you solve the problem? | |
picamera_basic_advanced_recipes/18461_227_0.txt | Contributor | |
picamera_basic_advanced_recipes/18461_198_0.txt | docker run --privileged -it -e DISPLAY=$DISPLAY -v
/tmp/.X11-unix:/tmp/.X11-unix -u 0 --device /dev/dri:/dev/dri --device-cgroup-
rule='c 189:* rmw' -v /dev/bus/usb:/dev/bus/usb --rm
openvino/ubuntu18_dev:update_1904 | |
picamera_basic_advanced_recipes/18461_291_0.txt | --- | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_26_0.txt | \-- Edit -- ` print(cv2.getBuildInformation()) ` gives me this: | |
picamera_basic_advanced_recipes/picamera_advanced_recipes_2_0.txt | ## 4.2. Capturing to an OpenCV object ¶
This is a variation on Capturing to a numpy array . [ OpenCV
](http://opencv.org/) uses numpy arrays as images and defaults to colors in
planar BGR. Hence, the following is all that’s required to capture an OpenCV
compatible image:
import time
import picam... | |
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picamera_basic_advanced_recipes/18461_93_0.txt | Author | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_98_0.txt | [ ![ gravatar image]() ]() [ ]() ( 2024-05-02 16:33:22 -0600 ) edit | |
picamera_basic_advanced_recipes/243406_26_0.txt | ssh -X nvidia@[IP] | |
picamera_basic_advanced_recipes/18461_132_0.txt | Copy link | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_68_0.txt | * * | |
picamera_basic_advanced_recipes/18461_3_0.txt | [ ](https://github.com/) | |
picamera_basic_advanced_recipes/18461_237_0.txt | Copy link | |
picamera_basic_advanced_recipes/18461_360_0.txt | **[ arielkantorovich ](/arielkantorovich) ** commented Nov 14, 2023 | |
picamera_basic_advanced_recipes/18461_262_0.txt | 1- at your terminal, before the docker run type
` xhost + ` | |
picamera_basic_advanced_recipes/18461_191_0.txt | * 👍 1 reaction | |
picamera_basic_advanced_recipes/18461_7_0.txt | Explore | |
picamera_basic_advanced_recipes/18461_216_0.txt | ### | |
picamera_basic_advanced_recipes/18461_150_0.txt | Copy link | |
picamera_basic_advanced_recipes/18461_249_0.txt | > > ashrc
>
> where do you get that .bashrc file? when i ` nano ~/.bashrc ` i didnt see
> anything about display | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_75_0.txt | ## Question Tools | |
picamera_basic_advanced_recipes/18461_284_0.txt | Sorry, something went wrong. | |
picamera_basic_advanced_recipes/18461_315_0.txt | ### | |
picamera_basic_advanced_recipes/18461_186_0.txt | > I managed to solve it by making sure when I ssh into aarch64 that I use ssh
> -Y user@host. This gives authorization to allow cv2.imshow() to display the
> window.
> [ gtk_init_check error solved
> ](https://unix.stackexchange.com/questions/94497/org-eclipse-swt-swterror-
> no-more-handles-gtk-init-check-failed-whil... | |
picamera_basic_advanced_recipes/18461_38_0.txt | [ Sign up
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name%3E%2F%3Crepo-
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repo&source_repo=opencv%2Fopencv) | |
picamera_basic_advanced_recipes/picamera_advanced_recipes_7_2.txt | pool = [ImageProcessor(self) for i in range(4)]
self.processor = None
def write(self, buf):
if buf.startswith(b'\xff\xd8'):
# New frame; set the current processor going and grab
# a spare one
if self.processor:
self... | |
picamera_basic_advanced_recipes/18461_288_0.txt | **[ phelix001 ](/phelix001) ** commented Oct 4, 2022 | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_28_0.txt | Extra modules:
Location (extra): /tmp/opencv-20190105-31032-o160to/opencv-4.0.1/opencv_contrib/modules
Version control (extra): unknown | |
picamera_basic_advanced_recipes/18461_264_0.txt | `Note: xhost + could do the job n | |
picamera_basic_advanced_recipes/sshx11forwardingprob_33_0.txt | Reply | |
picamera_basic_advanced_recipes/18461_324_0.txt | Copy link | |
picamera_basic_advanced_recipes/imshowpythonmacosnot_12_0.txt | * [ imshow ](/questions/scope:all/sort:activity-desc/tags:imshow/page:1/) | |
picamera_basic_advanced_recipes/18461_310_0.txt | --- | |
picamera_basic_advanced_recipes/18461_20_0.txt | * [ Topics ](https://github.com/topics)
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picamera_basic_advanced_recipes/18461_371_0.txt | Projects | |
picamera_basic_advanced_recipes/18461_342_0.txt | Copy link | |
picamera_basic_advanced_recipes/picamera_basic_recipes_16_0.txt | ## 3.16. Controlling the LED ¶
In certain circumstances, you may find the V1 camera module’s red LED a
hindrance (the V2 camera module lacks an LED). For example, in the case of
automated close-up wild-life photography, the LED may scare off animals. It
can also cause unwanted reflected red glare with close-up subje... | |
picamera_basic_advanced_recipes/243406_29_0.txt | +#include <opencv2/highgui/highgui.hpp>
#include <vpi/OpenCVInterop.hpp> | |
picamera_basic_advanced_recipes/18461_383_0.txt | You can’t perform that action at this time. | |
picamera_basic_advanced_recipes/18461_0_0.txt | Skip to content | |
picamera_basic_advanced_recipes/18461_95_0.txt | **[ Namburger ](/Namburger) ** commented Oct 29, 2020 | |
picamera_basic_advanced_recipes/18461_207_0.txt | I also had the same issue when running inside of a docker container. To fix
the issue and gain access to the X server and the display I found this
tutorial very helpful. | |
picamera_basic_advanced_recipes/18461_100_0.txt | [
](/BoShaoLi) | |
picamera_basic_advanced_recipes/243406_7_0.txt | Moved to TX2 forum for better support. | |
picamera_basic_advanced_recipes/sshx11forwardingprob_2_0.txt | Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community. | |
picamera_basic_advanced_recipes/picamera_basic_recipes_13_1.txt | - | nc my_server 8000
However, this recipe does serve as a starting point for video streaming
applications. It’s also possible to reverse the direction of this recipe
relatively easily. In this scenario, the Pi acts as the server, waiting for a
connection from the client. When it accepts a connection, it starts s... | |
picamera_basic_advanced_recipes/18461_317_0.txt | edited |
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