Tagged Questions

Open Source Computer Vision Library, real time computer vision

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2
votes
2answers
125 views

Picamera taking pictures fast and processing them

I'm working on a school project where I have to make a robot move parallel to a wall and stop when it sees a big red square. For this I have the picamera module and the openCV library. I have working ...
0
votes
0answers
37 views

OpenCV. Can't open video from usb camera on the screen

When I'm trying to start simple code, the frame opens and don't respond. import numpy as np import cv2 cap = cv2.VideoCapture(0) while(True): ret, frame = cap.read() ...
1
vote
1answer
101 views

Installing opencv (C++) on Raspberry pi and other misc packages

I've been doing a fair amount of research in regards to installing opencv on to a raspberrian distro, but the problem is that there is far too many different methods to installing it and truth be ...
0
votes
1answer
96 views

site-packages dir empty but OpenCV works…what the?

I used the following to install opencv sudo apt-get install libopencv-dev python-opencv I can "import cv2" fine, read images, manipulate them to my hearts content...everything works great! ...
0
votes
0answers
68 views

how to install cross-compiled opencv's libraries on raspbery pi

My problem is may be complicated, I'll try to detail I cross compiled opencv for ARM (Raspberry Pi) from my host, and everything works fine. I also tried to cross compile an example and it also ...
0
votes
0answers
134 views

how to install libtbb-dev in raspberry-pi

I am trying to install libtbb-dev on my raspberry-pi as part of installing opencv. sudo apt-get install libtbb-dev But i am getting an error as Package libtbb-dev is not available,but is refered ...
0
votes
0answers
76 views

opencv and cv2.so/libcv2.so setup for python

I installed opencv 2.4.8 on my raspberry-pi. But i am not able to locate cv2.so /libcv2.so so that whenever i import i get error as cv2 not found. Is there a way to download theese packages to use in ...
0
votes
0answers
1k views

Pi Camera Module frames directly to OpenCV lib for processing

My intension is to use raspberry Pi for tracking coloured object. I am using Python, OpenCV and Raspberry pi Camera Module. Since OpenCV doesn’t work out of the Box with raspberryPi cam Module, I ...
0
votes
1answer
213 views

Exposure correction via Picamera module

I am using the python picamera module developed by Dave Hughes. As per the documentation, the camera exposure can be set between -25 to 25. In my application, I need to get brightest pixels from the ...
0
votes
0answers
119 views

Setting up opencv eclipse native library in raspberry-pi (Linux based)

I am trying to setup a java based opencv program to run on raspberry-pi.I installed opencv-2.4.8 on my raspberry-pi. I also installed eclipse to set up opencv.The problem is i am not able to link ...
1
vote
1answer
79 views

Logging faces with OpenCV

I'm pretty new to OpenCV. Basically I want my RPi to do facial recognition with OpenCV and then log (save only the face as a picture) and store it in a database. How would I achieve this? I also want ...
1
vote
0answers
138 views

Is RaspberryPi OpenCV fast enough to run eye blink recognition?

I would like to create application that can recognise eye blink recognition on RaspberryPi with Raspberry Pi Noir camera. Eye blinks are fast, so I will have to process many frames per second. Is ...
0
votes
1answer
180 views

I don't get 24 frames per second

Although the camera framerate has been set to 24, 24 frames are being captured at 3 seconds. Wondering where I am going wrong?? I need to convert the stream to an OpenCV object to do further image ...
-1
votes
1answer
120 views

Difference between pi camera & usb HD cam

I am working on image processing project where working on frames taken by camera using raspberry pi. So i want to know which is better ? to use pi camera or usb cam , Hint : required good camera as ...
0
votes
0answers
73 views

Opencv configuration issue

I have recently installed opencv 2.4.8 on my raspberry pi.When i check the version with pkg-config --modversion opencv 2.4.8 But in my python code when i import cv2 i am getting the error as no ...
-1
votes
1answer
60 views

model a with opencv

I got a camera, a model A and a 8gig sd card and no idea what i'm doing I tried writing the noobs full image to the disk but when i plug it into the montior and power it on I get nothing Is there an ...
0
votes
0answers
242 views

Streaming webcam with Raspberry

Hi I'm trying to execute this code: http://www.xploreautomation.com/opencv-acquisizione-stream-video/ but I can't manage to do it. It says: HIGHGUI ERROR: V4L/V4L2: VIDIOC_CROPCAP init done opengl ...
4
votes
2answers
4k views

Using OpenCV with RasPiCam and python

Has any one been able to get OpenCV to directly play video from the RasPiCam board using python? I've seen some projects involving workarounds, but what I'm interested in is being able to use the ...
0
votes
0answers
170 views

Can I use openCV with Java SE embedded wrapper for Raspberry Pi?

I will try to explain what I am trying to do, as it seems to be relevant in order to understand my question. I am currently trying to do face recognition from a webcam connected to a Raspberry Pi ...
0
votes
0answers
278 views

Installing openCV on raspberry pi for video detection error avformat.h not found

I want to install opencv on the raspberry pi for image detection on a video I have followed this tutorial but the videos are not to be played or proccessd. I tried to install it again to make sure ...
4
votes
2answers
516 views

Image Recognition Raspberry Pi

I'd like to distinguish different types of beers in my fridge using a Raspberry Pi. I saw a very good tutorial on Adafruit that utilized OpenCV for face recognition. Can these same face recognition ...
0
votes
0answers
119 views

Interfacing Raspbian OS and webcam

I need to connect a webcam to Raspberry Pi for capturing images. I am using Raspberry Pi model B, and Raspbian Wheezy OS. Please help me out with the code. After capturing images I have to apply ...
0
votes
0answers
260 views

Options for slow camera via OpenCV

I'm desperately trying to use the Pi camera to do some work with it; I'm using OpenCV but trying to process the feed from the camera itself. Currently I'm running OpenCV on the Pi itself but this is ...
0
votes
0answers
177 views

Raspberry Pi CSI camera (RaspiCam) stops working after several actions

I am working on a project using the Raspberry Pi model B and the Raspberry Pi CSI camera module (RaspiCam). I'm using the libraries OpenCV and dynamixel. Image tracking and the dynamixel action ...
2
votes
1answer
264 views

building Raspberry PI apps from Windows

I want to build a C++ program for face detection using visual studio and opencv. I already installed the visual studio 2013 express edition and the opencv 2.4.8 on my windows 8 computer and linked the ...
1
vote
2answers
479 views

How to install opencv and eclipse on a raspberry pi

Is this possible? I've tried through command line but haven't found a clear tutorial yet. Would it be easier to accomplish this from gui or should I stick with the terminal?
0
votes
2answers
462 views

my raspberry pi freezes while face tracking using openCV and servoblaster

I'm trying to track face with Pan and tilt motion, using servoblaster and opencv, i followed this tutorial if anyone is intrested.. it runs perfectly but after few seconds camera freezes and it stops ...
2
votes
2answers
576 views

How can you use face recognition on raspberry pi as a login to the pi?

I have created an owncloud server using RPI, Now I was wondering how to implement the face recognition as a login for the pi. I know I have to use the OpenCV.
0
votes
0answers
66 views

Image Processing

I implemented face recognition algorithm in raspberry pi(python 2.7 is was used), i have many sets of faces, if the captured face is one in database then the face is detected(i am using eigen faces ...
1
vote
1answer
294 views

tornado server with video streaming

I'm running tornado web server on my Raspberry Pi and its task is very simple. It just takes commands and sends them to an Arduino over serial. I'm thinking of adding the Pi camera module and then ...
1
vote
0answers
241 views

Raspicam has low fps for OpenCV

So far, I've tried these tutorials: 1 & 2. I have also attempted to use this code to test it out, and the fps rate is quite low. It's just 2 -3 fps, which is not as high as when I stream via vlc ...
0
votes
0answers
185 views

How to get started with OpenCv on Raspberry-Pi

I have just installed the OpenCV (2.4.8) on my Raspberry-pi working on raspbian using these steps from this blog entry. I can find the cmake in the applications but not the opencv what is the next ...
0
votes
0answers
362 views

Cross-compilation with OpenCV

I'm stuck in cross-compilation my RPi with OpenCV, my project just one file main.cpp and build success in my computer by this tut. I want to run it in RPi. I read this tut but can't understand much, ...
1
vote
0answers
406 views

OpenCV messing up camera capture?

I recently updated my OpenCV to version 2.4.6.1, and I installed it with following commands and settings on my Raspberry Pi: wget ...
1
vote
1answer
2k views

OpenCV cv2.VideoCapture(0) doesn't work

The question is a bit similar to this question. The main difference is that I'm using a different camera (the Raspberry Pi camera board). I've spend a few days exploring Python and OpenCV. I'm ...
0
votes
0answers
281 views

Using picam with OpenCV / SimpleCV error

So I have set up my raspberry pi camera module to be used with opencv. I know it is working as for some scripts it works fine. (I followed the tutorial to get it to work with opencv etc) However, ...
0
votes
0answers
243 views

Build a connection between webcam and cron using python -opencv

I am using python-opencv to build a program to capture images through webcam and to save them.I want that program to start at boot using cron.My python code and cron line is as follows: ...
1
vote
1answer
471 views

Failed to find “GLESv2” when compiling OpenCV?

I'm having trouble compiling opencv 2.4.7 with cmake, I get a Failed to find "GLESv2" error: (hal)pi@raspberrypi ~/OpenCV/opencv-2.4.7/build $ cmake -D CMAKE_BUILD_TYPE=RELEASE -D ...
3
votes
1answer
3k views

Installing OpenCV on Raspberry Pi: can't find packages

I'm trying to install OpenCV 2.4.7 on Raspberry Pi (Model B, OS: Raspbian). The guides I'm referring to are: 1. RASPBERRY PI + SIMPLECV + OPENCV + RASPICAM CSI CAMERA 2. Raspberry Pi + OpenCV 3. ... ...
5
votes
1answer
2k views

Cross Compiling to Raspberry Pi from Windows with External Libraries

Following this guide, http://www.a2p.it/wordpress/tech-stuff/development/remote-debugging-raspberrypi/ , I was able to cross compile from Windows to Raspberry Pi. But is it possible to cross compile ...
1
vote
1answer
1k views

Opencv on a raspberry PI [closed]

What language would be best to use on a raspberry PI with Opencv. Bearing in mind for each language used : Library updates Development Environment including tool kits Performance ...
1
vote
0answers
791 views

Why can't opencv open my VideoCapture device?

I am running the "wheezy" distro on my board. I have OpenCV 2.3.1 installed. I made a small test program in C++ that attempts to open my webcam device that is on '/dev/video0'. I use, VideoCapture ...
6
votes
1answer
2k views

What method should I use to track a moving object with a moving camera (using resources of RaspberryPi)

I'm playing around with motion detection through a webcam connected to RaspberryPi using OpenCV and cvBlob in C++. I want to kick it up a notch and make a robot that detects and tracks movement ...
4
votes
1answer
750 views

Raspberry Pi becomes unresponsive when running opencv

I have successfully installed OpenCV on my Raspberry Pi and have been fooling around with some simple webcam streaming, live canny-edge detection, and so forth, all using basic C and C++ code. ...
2
votes
2answers
754 views

Porting Windows software

I would like to know is it possible to port software that uses OpenCV, OpenGL and QT on Windows to the Raspberry Pi. I wonder is it a must to use Qtonpi dist? I need resources like books, tutorials ...
7
votes
1answer
804 views

Reading video from camera (Kinect if possible)

I am starting up a project that will require Computer Vision to be used on the Raspberry Pi. I am relatively familiar with OpenCV and am aware that it can be installed successfully on a Raspberry Pi ...
1
vote
0answers
670 views

opencv 2.2 on raspberry pi

I tried to install opencv 2.2 on raspberry pi following the site: http://mitchtech.net/raspberry-pi-opencv/ (Actually this is a reference for opencv 2.3.1). But I can't run 'make' command successfully ...
3
votes
1answer
635 views

Why would an OpenCV program capturing video frames freeze after a few seconds?

I successfully installed: http://code.google.com/p/cvblob/ on my pi and compiled "red_object_tracking.cpp". Code located here: ...
2
votes
1answer
2k views

How do you build Open CV programs for raspberry pi using a cross compiler?

I have a cross compiler that allows me to compile code on Mac OS x 10.7 and produce binaries for the Raspberry Pi. Compiling simple "helloworld.cpp" programs works like this: ...
3
votes
1answer
1k views

Installing mjpg-streamer

I tried to install mjpg-streamer(experimental) in pi. But I don't know what to do after the following command. This remains a lot of time. If I tried to kill it shows errors for next command. ...