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OpenCVSharp

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Timestamp Message
22 Oct 2019
07:42:40@wwlee:matrix.orgwwleehello
07:51:56@wwlee:matrix.orgwwleeCan someone help me for white balance in OpenCV of C# ?
09:47:58@ravazquez:matrix.orgravazquezI never did it myself but here are some examples (none in C#) but should serve as a guide on how to go about it:
09:48:12@ravazquez:matrix.orgravazquezhttps://gist.github.com/tomykaira/94472e9f4921ec2cf582
09:48:18@ravazquez:matrix.orgravazquezhttp://amroamroamro.github.io/mexopencv/opencv_contrib/color_balance_demo.html
09:48:24@ravazquez:matrix.orgravazquezhttps://www.morethantechnical.com/2015/01/14/simplest-color-balance-with-opencv-wcode/
25 Oct 2019
07:22:10@zemiacsik:matrix.orgzemiacsik joined the room.
07:25:43@zemiacsik:matrix.orgzemiacsikHello, is it possible to controlll flashlight of device/camera with OpenCVSharp? Because I have been assigned to a project with OpenCV .NET wrapper from EMGU but I was not able to accomplish this, so I am looking for some other solutions..
11:32:25@joreg:matrix.orgiorec zemiacsik: i am not aware of any generic api to control flashlights of cameras. so i doubt it is possible. i guess you'll have to look at the cameras specific API
11:32:30@joreg:matrix.orgiorecwhat camera is it?
11:50:49@zemiacsik:matrix.orgzemiacsikIt is integrated on device (Win10 tablet). I was able to include UWP libraries and turn the flashlight on, but everytime VideoCapture is created the flashlight turns off ☹️
12:21:49@ravazquez:matrix.orgravazquezhave you checked the Property dialog that OpenCV gives you access to on your Video Input device? maybe there is an option there, not sure though, this is all very vendor/driver specific as far as I know
27 Oct 2019
14:20:47@andygybels:matrix.organdygybels joined the room.
14:26:41@andygybels:matrix.organdygybelsHey Guys, Trying to open an RTSP or RTMP network stream using the OpenCvSharp4.Windows nuget package. Verified stream is running using VLC.
14:26:47@andygybels:matrix.organdygybelsusing the following code
14:26:49@andygybels:matrix.organdygybels

if (capture == null)
capture = new VideoCapture("rtmp://192.168.1.148/bcs/channel0_sub.bcs?channel=0&stream=0&user=user&password=password");

        capture.Open(0);

        if (capture.IsOpened())
        {
14:26:59@andygybels:matrix.organdygybelsIsOpened always returns false
14:27:15@andygybels:matrix.organdygybelsAny tips?
6 Nov 2019
08:32:42@ppqboss:matrix.orgppqboss joined the room.
12 Dec 2019
03:49:35@xiangyu.li:matrix.orgXiangyu joined the room.
03:51:20@xiangyu.li:matrix.orgXiangyu changed their display name from xiangyu.li to Xiangyu.
03:53:06@xiangyu.li:matrix.orgXiangyuHello,how can I get the ID and name of the currently connected camera? I don't think it is a good way to traverse the collection to determine whether the image is empty
14:16:58@ravazquez:matrix.orgravazquezAs far as I understand there is no way to do this in openCV
14:21:04@ravazquez:matrix.orgravazquezI had to use dxshow or MediaFoundation for this
23 Dec 2019
16:46:28@cobracalle:matrix.orgcobracalle joined the room.
16:46:48@cobracalle:matrix.orgcobracalleHello together
16:47:12@cobracalle:matrix.orgcobracalledoes anyone knoe if it is planed to port dnn bases superresoultion to opencvsharp? 8https://docs.opencv.org/master/dc/d69/tutorial_dnn_superres_benchmark.html)
16:51:26@ravazquez:matrix.orgravazquezI have no idea and unfortunately shimat is not on this chat, probably best to ask on the github repo itself
12 Jan 2020
14:50:52@roman0546:matrix.orgroman0546 joined the room.
14:57:06@roman0546:matrix.orgroman0546Сan someone help me? This line of the program does not work if it is located on the local network. using OpenCvSharp; namespace ConsoleApp1 { class Program { static void Main(string[] args) { Mat mat = new Mat(); } } }

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