I've been using OpenCV to read out camera output and process the frames. I am on Windows 7, and it turns out that OpenCV cannot simultaneously read multiple USB cameras in Windows. Does anybody have an experience with SimpleCV in Windows 7 in this direction? Is it capable of displaying output of multiple USB cameras in Windows 7 simultaneously?
Thanks!
I'm one of the core developers for SimpleCV and I'm guessing if OpenCV can't do it than it won't work. We have pygame as a graceful fallback on linux and mac but a camera interface doesn't exist to it on windows sadly. I have still yet to find a good open source solution to just viewing a webcam on windows either.
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I am trying to connect Kinect 360 with Windows.
What I try:
I try to connect it with Windows 10 (64-bit) and Windows 8.1 (64-bit) (both ware host OS).
I downloaded and Installed the Software Development Kit (SDK).
I downloaded and installed the Kinect for Windows SDK v1.8.
I downloaded and installed the Kinect for Windows Developer Toolkit v1.8.
Then, I plug the Kinect 360 in the electric power and connect it with my Lap Top using the USB 3. I am using a power supply adapter cable for Xbox 360 Kinect Sensor (see the picture below).
As a result, no new hardware ware listed in the Device Manager like no new microphone, no new camera, no new unknown devices.
BTW I am not sure if the Kinect hardware is working at all. I don't know how to check it - there aren't any lighting lights on it. I did some research, but I didn't see any lights on working Kinect 360 on youtube videos. So I don't know how to test whether the Kinect is working (without connecting it with XBOX).
I want to connect the Kinect sensor with the PC machine because I need to do some tests. If there are other solutions with another OS (like Linux-based or MAC OS), I can try it too.
there was the same problem, it shows up as a microphone, I thought the problem was in the kinect itself (I thought it was broken) so it lay on the shelf for 2 years. I updated my PC 4 months ago and it turned out that there is usb 3.0 on my old motherboard, but it is not supported (perhaps 3.2 is needed for it). Now kinect works fine and is being determined
I am looking to implement the use of a Bluetooth 4.0 Smart Ready device (Polar H6/H7 Heart Rate Sensors) in my application. I am forced to target Windows 7 OS. However, I'm only seeing Windows 8 support for Smart Ready devices. I will not be able to upgrade clients to windows 8 in order to use these devices.
The first problem I found is that Windows 7 does not even see the device in order to pair with it. This might be the dongle I'm using. I have tried 2 different ones. The first is a CSR V4.0 (I'm not sure the actual model number). The second is StarTech USBBT1EDR4. Both seem to be using a CSR chipsets. Maybe I should try a different chipset based dongle? Such as Broadcom or TI?
I do see and can pair with the device with my Windows 8.1 Surface Pro.
Is there no way to get Bluetooth Smart implementation for Windows 7 OS platform?
I've recently faced the same problems! I need to run an application in o older version of windows (win xp) and I cannot find any support to that with my dongle (one based in broadcom bcm20702).
What I've found is that windows prior to windows 8, has no bluetooth low energy support, so you would not be able to use the windows bluetoth stack, and broadcom doesn't have a sdk for BLE (I've contacted them, and they said it).
So I've looked for other alternatives and BlueGiga bluetooth 4.0 dongle has a C SDK that you can use to develop your applications in Windows XP and 7. In that page (after register) you can find all the documentation you need.
I've also found a C# Wrapper and a Java Wrapper to its API.
Hope it can help.
[EDIT] : just received my dongle, tried it with win XP and it worked. Guess this is a solution for you also!
Strange thing is, I installed windows 10 and I could use bluetooth smart from my Logitech MX master mouse, but I had to go back to windows 7 because of display drivers and now it does not support it anymore. Windows 7 does not support smart bluetooth. It's just a driver I would presume, but Logitech does not provide it.
I find it realy strange that the old bluetooth device in my laptop worked fine with bluetooth smart devices in Windows 10 but in windows 7 it can only connect to plain old bluetooth devices.
I would like to create my Kinect development environment and am contemplating using iMac as the box with Windows 7 installed as dual boot and/or parallels.
Has anyone tried this configuration earlier and does it work?
Running Bootcamp(dual boot) works with windows 7/8 Parallels does not.
I have a macpro 1,1 and a mac air both work with bootcamp(dual boot).
The only thing that could cause it not to work is the USB configuration. Kinect requires that it be connected to a USB host controller and not a hub. I believe all of the iMac's USB ports are host ports so I don't believe this to be an issue. If you use the Kinect Sensor Chooser control built into the WPFViewers sample app it will tell you if that particular problem arises (insufficient bandwidth).
Parallels will not work with the SDK at the time of this writing due to driver. Kinect is not an official USB device and the driver requires direct communication with the Kinect. I hoped that this would be resolved with the official Kinect for Windows hardware but alas it was not.
You might want to look at native OSX Kinect development using OpenKinect
http://openkinect.org/wiki/Getting_Started
If you don't want to have to write all the image processing code yourself, and are working in C#, you could start with the Accord library:
http://accord-net.origo.ethz.ch/
I'm playing around with OpenCV since a while and I found some strange behavior of some specific capturing devices (PS3 Eye, Logitech C940, iSight) even on different Platforms.
Using OpenCV in Windows: All cams mentioned above work well. But when I want to use 2 cams and therefore create a second capture it will depend on the devices that I use in my Dual Cam Setup.
PS3 Eye + C940: no problems
2x C940: no problems
2x PS3 Eye: No chance, only the specific device that was connected first will initialize. The other PS3 Eye cannot be used the same time...No error events and no information about the problem is shown.
Now using OpenCV in MacOSX 10.7 (same for 10.6.x) there's different problems using the same devices and even the same QtGui-Application with 2 independent GLWidgets for displaying cv output in the QtGui.
Every Setup is great as long as it doesn't use a PS Eye in Mac OS. I tried macam and several other tools, but I just cannot get OpenCV to init this cam in OSX (I bought 3 for my project so hardware probs not very likely).
I'm still wondering where the problem is...Maybe 2 PS Eye's would work in OSX if a single one did? I can't tell.
I can even capture from 2x Logitech FULL HD Webcams simultaniously with nice performance.
Any Idea where Limitation could be with Dual PS Eye in Windows? Perhaps USB? And why can't OpenCV in OSX Capture from PSEye but macam can access the cam?
I just want to understand what's happening. Perhaps anyone of you found a way to use at least a singe PS Eye in OSX? Or is this just not possible? Can't opencv somehow use the macam component?
Video capturing is very platform-dependent area. So difference between Windows and OS X is rather expected than wondering. OpenCV utilizes a lot of video capturing APIs to support as many device models as possible. At the moment (OpenCV 2.3.1) it uses following libs/APIs on the back-end:
Windows:
DirectShow (thought VideoInput library)
Microsoft's Video for Windows (VfW) API
CMU 1394 Digital Camera Driver
Matrox Imaging Library (MIL) (opt)
OpenNI camera drivers (opt)
XIMEA API for XIMEA devices (opt)
Linux:
libdc1394 (API v1 or API v2) - IIDC standard compliant cameras (opt)
PvAPI for Prosilica GigE Vision cameras (opt)
unicap - The uniform API for image acquisition devices (opt)
video4linux (V4L or V4L2) (opt)
OpenNI camera drivers (for Kinect) (opt)
XINE (opt)
XIMEA API for XIMEA devices (opt)
OS X:
QuickTime (opt)
QTKit (if no QuickTime, these two are mutually exclusive in OpenCV)
OpenNI camera drivers (opt)
XIMEA API for XIMEA devices (opt)
Android:
builtin Android camera
* (opt) - these interfaces are optional - can be turned on or off during the OpenCV build and may require some additional SDK.
About PS3 Eye - on Windows, it is most probably some limitation of VideoInput library or installed driver. On OS X - first, ensure that your OpenCV is built with QuickTime support. And second, ensure that macam.component is correctly installed into the QuickTime. Here is a quote from their FAQ:
Why can't I use my webcam with other applications?
You can. Please copy the macam.component into the
/Library/QuickTime/ directory (for access by all users on the system)
or into the ~/Library/QuickTime/ (for access by only that user). If
you have a previous copy, please delete it first. A restart is usually
not needed, but if you have trouble, it's a good thing to try. To
verify that your installation works, test with a simple program such
as HackTVCarbon, VideoViewer, or BTV.
I have been able to build PJSUA. The softphone runs perfectly on Windows XP, but on Windows 7 but it gives me the following error
It seems to be an issue with PJSUA on Windows 7. Has anyone been able to resolve this?
If you look into the code you will see that PJSUA is looking for a default device that has both input and output (mic and speakers) - such as headset. Just output or just input will not work...So if you plug in a headset you may eliminate your error. It works great on Win7.
The audio part of PJSIP is quite complicated IMO. Although I have it working now I am myself researching how to implement giving user a choice. That is, the user will have a choice of using headset or mic/speakers built-in combo.
Seems it is incompatible with windows7, and so is Sipek, because of some library which is no longer present in Windows7 (libwavemixer, ...).
I went on to use the Java-based Peers SIP Phone.