How do I use my smart phone camera as a webcam in MATLAB?
显示 更早的评论
I have an smartphone device with a camera. I would like to obtain and process this image data in MATLAB.
(Specifically, I have an Android device).
3 个评论
Sarah Mahmood
2013-6-3
is there any other solution that make matlab still running in the foreground, I tried this method yet it require the ip cam to run in the foreground i need matlab to be still running for later image processing. Also is it possible to access the smart phone camera using matlab mobile Specifically to iphone camera ?
keerthana potharaj
2019-1-29
移动：DGM
2023-2-22
how do we interface mobile camera for deep learning?
P.S we don't have web cam. pls help us.
kundan surse
2020-1-21
移动：DGM
2023-2-22
I want to take the screenshot of my mobile screen form matlab to use it for further prossesing how can i do that ?
采纳的回答
Ashish Uthama
2011-7-20
The general solution would need two parts, one to broadcast the data from the device and another part to read this data into MATLAB.
A specific solution for Android:
- Install the free IP Webcam app. (Make sure you read the corresponding permissions and understand any security issues therein)
- Open the app, set the desired resolution (will impact the speed!)
- Scroll to the bottom and tap on 'Start Server'
- In the camera preview window, note the url at the bottom of the screen.
- Open MATLAB and use this code snippet to obtain a live preview window. Note that this uses JPG files for discrete frames, which is probably not the fastest way. The app can stream the video and/or audio in multiple ways.
url = 'http://<ip address>/shot.jpg';
ss = imread(url);
fh = image(ss);
while(1)
ss = imread(url);
set(fh,'CData',ss);
drawnow;
end
Example:
(If you find faster ways/solutions for other devices, post it here!)
18 个评论
Sean de Wolski
2011-7-20
Nice recursive ML screen. +1 for that!
I use a 'dumb' phone so can't provide real feedback ;)
Ashish Uthama
2011-7-20
Chirag Gupta
2011-7-20
Is there a similar app for iOS?
Ashish Uthama
2011-7-20
编辑：Walter Roberson
2023-5-16
ibrahim
2013-3-9
hi, i want to know that can we change this rgb image into grayscale or binary image. i have tried but failed. so any suggestion plz
Walter Roberson
2013-3-9
编辑：Walter Roberson
2016-12-5
set(fh, 'CData', rgb2gray(ss));
And be sure that you have done
colormap(gray(256))
after the original image() call.
Joshua
2013-7-22
I'm using a GoPro HD camera which has a URL via an Ambarella video player as http://10.5.5.9:8080/live/amba.m3u8. This is the network address to play in a VLC player. I want to use Matlab for further processing options.
What's the purpose of the .jpg string of the url input? I use the same code as above for the iPhone and Android with the '.jpg' extension on my URL and get the error message...
Error using imread (line 331) Can't read URL "http://10.5.5.9:8080/live/amba.m3u8.jpg".
Current input in command window is url = 'http://10.5.5.9:8080/live/amba.m3u8.jpg'; ss = imread(url); fh = image(ss);
while(1) ss = imread(url); set(fh,'CData',ss); drawnow; end
Antonio Garcia-Martinez
2015-2-10
Very nice Thank You!!
Prateek Verma
2016-12-7
>> Ipcamtest Error using imread (line 330) Cannot read URL "http://<htp://10.170.26.12>/shot.jpg".
Error in Ipcamtest (line 2) ss = imread(url);
Hi, Actually I got this Error.. Can you help me out?
Pablo sanchez
2017-5-24
Hola a todos. La propuesta de Ashish Uthama me ha resultado muy bien, el unico detalle es que en la IP se debe agregar el puerto que muestra la imagen en la parte inferior en el dispositivo android.
Saludos.
ban_pro
2017-10-5
Hi Prateek..! Just remove all the connection to your PC except the connection of android and your PC. This error is coming because Your PC is trying to connect to other network and your cam is in other network.
Anupam Bhardwaj
2018-2-1
how can i save a particular frame as an image from this live feed of video from the phone?
surya ningsih
2021-3-24
thank you very much
Aman Swaraj
2021-10-19
Is there anyway to use the smart phone camera as web cam through usb cable?
Walter Roberson
2021-10-20
Jonathan Gadiel Ramírez Martínez
2023-5-16
Hello, is it possible to edit the exposure of the android camera?
Walter Roberson
2023-5-16
编辑：Walter Roberson
2024-11-7
If you happen to use the same product as was discussed in the link on instructables then the vendor site says that exposure is adjustable. https://www.e2esoft.com/ivcam-camera-settings/
Dominik
2024-11-6
Hi, tip from me - a bit quicker than taking jpg files is to use video. Using the mentioned app the link is simpy:
url_cam = 'http://<ip_address>/video';
cam = ipcam(url_cam)
更多回答（12 个）
Soham Bhattacharyya
2016-5-16
3 个投票
You can use DroidCam if you are using an android phone. You'll need to install OS Generic Video Interface driver.
Hope it helps. :)
2 个评论
for anyone that can't find the correct address for droidcam simply connect to droidcam using your browser and click on the i button. It should look like this
http://192.168.1.61:4747/mjpegfeed?640x480
and then
camera = ipcam('http://ipaddress:port/mjpegfeed?640x480')
Nikhil Sai
2018-2-7
thank you worked for me
Chirag Gupta
2011-7-20
With the iPhone, using the App suggested by Ashish above (IP Cam), you can achieve the same pretty easily! The code is exactly the same:
url = 'http://<ipaddress>:8020/image.jpg';
ss = imread(url);
fh = image(ss);
while(1)
ss = imread(url);
set(fh,'CData',ss);
drawnow;
end
5 个评论
Sean de Wolski
2011-7-21
Nice Fractal, +1
Francisco Canto
2012-3-4
Hi, Excuse me for my bad English. I'm using IP webcam for Android.I used
url = 'http://158.124.30.101:8080/shot.jpg';
ss = imread(url);
fh = image(ss);
The video is excellent but my problem is that I want to use a bounding box to sellect a red object in the video. I don't know if it's possible. Can anyone help me?thanks
Ashish Uthama
2012-3-21
Joshua
2013-7-22
is the IP address for the android webcam streaming live video or simply a single image or series of saved images?
Tiwa Romuald
2015-10-15
hi, please how can i save the video from this function? thank you best regard
amro
2014-5-10
url=('http://192.168.43.1:8080/shot.jpg?rnd=350264');
hVideoIn = vision.VideoPlayer('Name', 'Final Video');
while(1)
ss=imread(url);
step(hVideoIn,ss)
end
3 个评论
Haider Ali
2015-9-6
This works well but i have question that why you did not use IP Camera Image Acquisition? i there any why to use it with ip webcam app
Walter Roberson
2015-9-6
ipcam() was not introduced until R2015a, a year after amro posted their Answer.
Tiwa Romuald
2015-10-8
Hi Hauder Ali, please can you explain how it work on IP camera Image Acquisition. I new in Matlab. thx
PIYUSH KUMAR
2015-9-14
Here's the working code for color detection using android camera:
url = 'http://192.168.0.100:8080/shot.jpg';
framesAcquired = 0;
while (framesAcquired <= 50) % the vedio will work till the 50 video frames, after that the vedio will stop. You can use while(1) for infinite loop
data = imread(url);
framesAcquired = framesAcquired + 1;
diff_im = imsubtract(data(:,:,1), rgb2gray(data)); % subtracting red component from the gray image
diff_im = medfilt2(diff_im, [3 3]); % used in image processing to reduce noise and for filtering
diff_im = im2bw(diff_im,0.18); % convert image to binary image
stats = regionprops(diff_im, 'BoundingBox', 'Centroid'); % measures a set of properties for each connected component in the binary image
drawnow;
imshow(data);
hold on
for object = 1:length(stats)
bb = stats(object).BoundingBox;
bc = stats(object).Centroid;
rectangle('Position',bb,'EdgeColor','b','LineWidth',2)
plot(bc(1),bc(2), '-m+')
end
hold off
end
%stop(vid); % to stop the video
%flushdata(vid); % erase the data video
clear all
1 个评论
Tiwa Romuald
2015-10-14
编辑：Tiwa Romuald
2015-10-15
hi PIYUSH KUMAR please this function it's just for a snaphot or video? i would like to have video and save it from my smarphone into matlab. how can I save directly as a AVI video? please help me. thank you
Amrinder Brar
2015-3-25
编辑：Amrinder Brar
2015-3-25
0 个投票
Is there any simple solution to this problem in iphone(i.e. without having to install any third party apps) ?
1 个评论
Walter Roberson
2015-9-6
saras
2016-7-1
0 个投票
I am not sure if this is exactly what you are looking for. However, you can use 'Simulink Support Package for Samsung GALAXY Android Devices' or 'Simulink Support Package for Apple iOS Devices' to access the appropriate smartphone camera. Both these support packages come with a Camera block that allow you to get the Camera data inside MATLAB. You can subsequently connect the Camera block to a Video Viewer block if you would like to visualize the data in Simulink.
1 个评论
Cristian David Jimenez Bedoya
2016-12-5
编辑：Walter Roberson
2016-12-5
buenas, este programa funciona bien pero no he logrado capturar una imagen a partir de este mismo, como puedo obtener una captura de imagen y almacenarla ?
url = "http: // <dirección IP> /shot.jpg ';
ss = imread (url);
fh = imagen (ss);
mientras que (1)
ss = imread (url);
conjunto (FH, 'programable CData', ss);
drawNow;
fin
2 个评论
Walter Roberson
2016-12-5
Approximate translation:
Good, this program works fine but I have not managed to capture an image from this same, how can I get an image capture and store it?
Walter Roberson
2016-12-5
imwrite() the content of ss
MARIA JAVED
2017-2-4
0 个投票
can anybody tell me that how we can do face detection through Android phone pls help??? i need that code?
1 个评论
Walter Roberson
2017-2-6
You would either have to write the code in MATLAB and use MATLAB Coder, or else you would have to create a Simulink model and deploy that to Android.
Jonathan berry
2017-4-10
0 个投票
Hello guys,
I keep having this error:
Error using imread (line 350) Can't read URL "http://MY_IP /shot.jpg".
any help will be appreciated
2 个评论
Beril Sirmacek
2018-3-20
I have the same issue. Looking for an answer.
Walter Roberson
2018-4-29
You need to replace he "MY_IP " part by your actual IP address, such as http://192.168.0.10/shot.jpg
Dilip Dubey
2018-4-29
0 个投票
How can I read other sensors from IP webcam app in Matlab?
1 个评论
You can geet a json file for sensors
s='4'
urlImage=['http://192.168.1.' s ':8080/shot.jpg']
urlSensors=['http://192.168.1.' s ':8080/sensors.json']
frame = imread(urlImage);
q=jsondecode(urlread(urlSensors)); %#ok<URLRD>
q.accel.data{1}{2}
Beril Sirmacek
2018-4-29
Hi All,
I found out that;
imread('http://MY_IP /shot.jpg');
works only on secured network for me. If I am on a public network, then it gives error.
2 个评论
Omkar Bhanap
2018-8-8
How can I extend this to Simulink model? any suggestions?
Walter Roberson
2018-9-6
"On Windows platforms, this parameter supports URLs that point to MMS (Microsoft Media Server) streams."
Akram
2023-12-11
0 个投票
Hi, there is a new feature on Apple devices (Continuity Camera) where we can directly use our phone's camera as our mac's webcam. With this feature activated, when using the command imaqhwinfo, i only see my mac's webcam and not my iPhone camera. Is there a way to acquire video (live) with my iPhone's camera ?
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