I have been working with some drones and robotics projects using arduino and python. There was a kickstarter project for a neat little hex copter, that hasn't been managed well.
I was lucky, i got my copter and then some time later after some frustrated email exchanges, i finally recieved the camera as well. To this day, their forum has people still complaining. Their maker forum is now down and their wiki hasn't been updated with any specifics on the camera.
http://www.flexbot.cc/wiki/index.php?title=Main_Page#Hardware
Their app to accompany the drone still doesn't support the camera module. Not that it'd matter, as their code isn't very well documented or annotated.
https://github.com/HexAirbot
There are some tips on switching the camera on the comments page of their kickstarter campaign.
https://www.kickstarter.com/projects/1387330585/hex-a-copter-that-anyone-can-fly/posts/1093716
So, sob story over, i'm stuck with this neat little wifi camera that i am unsure on how to connect to. I know how to switch it on and it does have a micro-usb port on it.
What library in Python could i use to stream an image from this camera given that it is a wifi camera. If i wanted the video stream as a numpy matrix.
I need to interface with the camera, so i can connect and disconnect.
Then, be able to read images frame by frame with ffmpeg. I have some python modules that can detect and read from a camera, but how can my code ensure that the camera is connected?
Totally stuck. Any help would be appreciated.
Considering you are building for the android platform, you will more than likely need to use some sort of java/python driver/interface, unless you just use java.
Here is an article on java/python, and using python from within java.
Using Python from within Java
Related
I've been searching for quite some time now, but the only example I've seen where camera motion keyframes (movements) can be extracted from a video is in blender. I'm looking for a script, library, colab notebook, or any recommendation to be able input a video (for example, getting the camera keyframe movements from a video of a drone flying around) and exporting it to any type of file. The main purpose of this is double-sided: I want to be able to take the camera keyframe movements from the drone video and input it into an AI Art Animation and I want to be able to learn and add this python tool or library into a colab notebook of AI tools I've been slowly building over the months. Any help from you masterful wizards will be appreciated. Thanks!
I'm a "hacker", "novice-intermediate" level python coder, meaning I can read code and understand most basic and some advanced type coding. I'm able to read code quite well and manipulate it to my preferences, but I just don't even know where to start when it comes to the request I'm asking, ergo my post to Stack.
Heading I need to get an image at the same time (almost, it is possible to take turns in a loop) from two PS3 Eye cameras, and then work with them using OpenCV.
We need drivers for the ps3 eye multicam (for example, these are not suitable https://codelaboratories.com/downloads/)
As an option for drivers there is a program zadig(https://zadig.akeo.ie/), and in particular WinUSB (libusb), but OpenCV Python (the standard function cv2.VideoCapture) sees only one camera. I found a project that can use several cameras at once in OpenCV with WinUSB drivers (libusb) - https://github.com/psmoveservice/PSMoveService/releases (Open bin/test_camera.exe). But it is written in C++ and due to its incompetence in this programming language, I could not port the code to python.
In the end, I need drivers and Python code to use the ps3 eye multicam in OpenCV.
Try checking this. Get the environment you want to build.
https://github.com/bensondaled/pseyepy
Let's you configure the camera as well.
I need to display the USB camera video of raspberry-pi in Wxpython with control buttons in it. I have managed to embed vlc in to Wxpython with control buttons (Got it from Google) to play existing video. Is there any way to stream the USB camera video in it?
Thanks in advance :)
If you've managed to embed VLC, you should just be able to point it at the v4l address for the webcam.
The v4l address should be along the lines of v4l:/dev/video0:size=640x480 (but it'll vary depending on your machine I guess). You may find it easier to use the standalone VLC client to get the address you need and then put it into your program.
This StackOverflow thread may be useful for later depending on what you're doing.
Background
I'm attempting to craft a simple video playback script for a small cinema that automates the playing of videos and control of the projector, sound and lighting systems. I have two video outputs, one goes to a monitor in the projection booth, and the other directly to the projector. I desire to play video (and only video) fullscreen to the projector while putting controls and a small (~1/4 screen) preview on the monitor. This will allow the projectionist to view the video being output and control the playback from the monitor in the booth while all the audience ever sees is the video output.
Problem
I am currently using Python to control VLC player (with libvlc Python bindings) to playback videos. I have everything working fine except that I can't figure out how to get a preview (direct copy) of the video being played fullscreen on the projector output into my GUI.
I have tried using the clone filter, but I cant get the cloned window to automagically appear full screen nor in my GUI. The clone filter seems like the logical choice but it seems to be VERY inflexible when it comes to specifying destination screens, fullscreen, etc. I must be able to open video windows full screen on the projector monitor. Professionalism is key and it would look bad if the projectionist had to drag a window over and double click on it when the movie started.
Currently Using:
Debian Linux
Python 2.7
wxPython
libvlc
I would like to continue using Python as I already have the code for controlling the projector, sound processor, lighting and curtain written and tested. I chose VLC because it really seems bulletproof when it comes to video playback but am not committed to it's continued use. I also chose wxWidgets for my GUI as a result of past experience but I am not stuck on that either.
This describes the direct solution and does not concentrate on any alternative or the overall design of your application.
As Your Application and VLC media player are separate processes, you will not be able to get what you want directly because there is no "shared memory" between those 2 applications. The best shot to "copy" the decoded frames from VLC will be to e.g. send a RAW Video .mts stream (ts is usually used for this kind of usecase) and send e.g. to udp://localhost:1234.
In your application, you will need to be able to receive the ts stream, "decode" it and display at the spot of interest.
For start, i would try if you are able to do this using 2 vlc players that you control manually. When you achieved that the first VLC streams to udp and outputs on the main display at the same time, and the other VLC player receives and plays the udp stream you can go on:
Find a player library that you can use directly in your wxpython application and check if it can receive the udp stream as well E.g.
https://wxpython.org/Phoenix/docs/html/wx.media.MediaCtrl.html
This player lib for example requires gstreamer as a base.
As a result, main display and the picture in your applicatoin might have a latency of some seconds. To come around this latency, the best way that i currently know is using WebRTC but this is a lot more complex setup than the above.
https://www.sipwise.org/news/technical/tv-over-webrt/
Sure in case you do some "encoding" for WebRTC or even for UDP, you would need to utilize some hardware encoder, e.g. Nvidia NVENC in order to be able to guarantee the needed resources are always there.
I am trying to communicate with a game controller Human Interface Device (HID) with a Python script, but I'm having trouble receiving data from the controller. I am using pywinusb 0.3.2 and Python 3.3. The game controller is a Logitech Gamepad F310.Link Here to pywinusb.
I have been able to get python to recognize the HID, but I am stuck as on where to go from there. My code for recognizing the controller is:
import pywinusb.hid as hid
target = hid.HidDeviceFilter(vendor_id = target_vendor_id, product_id = target_product_id)
allitems = target.get_devices()
device = allitems[0]
print(device)
This code returns something like this: HID device (vID=0x00a, pID=0xa000, v=0x0000); Logitech; Logitech Dual Action, Path: \(numbers and letters in a long sequence here)
I'm not sure if the approach here would work with a controller, or whether there is another library that is preferable to pywinusb. If I have to switch libraries, I would prefer to switch to one that is cross platform. The small amount of documentation in the examples section included was not enough for me to figure this out with.
My question is: How do I receive the data from the controller? Is there a command? I've worked with the Arduino a little bit and hooking it up to a Wii Nunchuk was a similar process. Will I have to be sending initialization sequences, similar to the Arduino? I need to know the x and y values of both sticks on the controller as well as whether the buttons are pressed.
My apologies if this is obvious or has already been answered. I have never worked with an HID in python before.
Take a look to how HID usages work (google around).
Use the show_hids.py example script to review if the device exposes standard usages.
If not, your only hope is to use raw reports handlers (check the example folders from the source, I recommend you to work with github's code).