Open Source Computer Vision Library, real time computer vision

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1answer
13 views

can't save video with opencv 3.1 windows

i'm trying to capture a video using opencv 3.1. I'm using the following code, but when I run it on pycharm, a small window opens (according to task Manager it has something to do with video ...
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0answers
26 views

Error Install OpenCV 3.1.0

Trying to install OpenCV 3.1.0 on Raspbian Pi-2, came up with this error. Linking CXX static library ../../lib/libopencv_ts.a [ 52%] Built target opencv_ts Makefile:147: recipe for target ...
0
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1answer
66 views

Activate virtual environment and run python script on RPi startup

I am working on my project and using a raspberry pi 2 with raspbian OS. I followed the following link http://www.pyimagesearch.com/2015/10/26/how-to-install-opencv-3-on-raspbian-jessie/ to install ...
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0answers
21 views

VideoSurveilance Application whichs was provided by Emgucv bundle Hangs on Raspberry Pi

When i try to run the VideoSurveilance Application on Raspberry Pi.The Application Hangs it cannot open a window,I followed the steps From this Link EmguCv Download and Installation Steps are there ...
0
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1answer
64 views

How to install OpenCV3 for Python 3 on Raspberry Pi 3?

I have searched the net for the process but have not yet found any useful help for the query. Following are the links, ...
0
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1answer
46 views

raspberry camera module feed is slow with Opencv using v4l2

i am trying to use Opencv to video capture from the raspi cam to do some operation on it, the problem is i am using v4l2 to capture the video and it is so slow (10 sec delay and 2 fps). what i have ...
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0answers
26 views

Using Raspberry Pi 2 B with Pan Tilt and OpenCV 3.0.0 for the 1st Time

I am very new to Raspberry Pi, and This is my first time using it. I have read a lot from the documentation on the official website, and I really got great things. After that I installed OpenCV 3 with ...
0
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1answer
41 views

raspberry camera module cannot be opened with device ID

i am trying to run this face recognition code from here! i successfully installed OpenCV on the raspberry, and i used the code before on windows. but here i have the problem with the raspberry ...
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0answers
53 views

Raspbian Jessie with OpenCV 3.0 and 2.4. How to remove 2.4?

I have installed OpenCV 3.0 and 2.4 on my RPI (Raspbian Jessie). Is there any way to remove (uninstall) the 2.4 OpenCV?
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36 views

box.py: “File can't be opened for writing”

I get this error when I try sudo python box.py on Raspberry Pi 2: Loading training data... OpenCV Error: Unspecified error (File can't be opened for writing!) in load, file ...
0
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1answer
54 views

execute cpp code written with visual studio on the Raspberry Pi 2

I am new to the Raspberry Pi and opencv lib, I have spent some time learning opencv up until I finished my first program written in c++ . Now I want to compile and execute the same c++ file on the Pi ...
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0answers
8 views

Installing Java OpenCV 3.1.1 on a Raspberry Pi 2? [duplicate]

Is it possible to do this and if so how? I was able to install the C++ libraries but I would prefer to work in Java.
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1answer
63 views

Raspbian Jessie and OpenCV 2.4.9 “get_buffer() failed (-12 (nil))” error

I upgraded my RPI2 to use Raspbian Jessie. (NOOBS 1.9.0) I also installed OpenCV 2.4.9.1 package. (It is the default package from apt-get install) Now, I have a problem while recording video with ...
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0answers
52 views

libtiff4-dev - The following packages have unmet dependencies

I am trying to install opencv on my raspberry pi. One of the dependent packages is: libtiff4-dev When I try to install it I get the following: sudo apt-get install libtiff4-dev Reading package ...
0
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1answer
100 views

opencv raspicam configuration C++ Example

I need any help with this error pi@raspberrypi ~/opencam_test $ sudo g++ simpletest_raspicam_cv.cpp -o simpletest_raspicam_cv -I/usr/local/include/ -lraspicam -lraspicam_cv -lmmal -lmmal_core ...
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0answers
15 views

best choice for image processing and real time embeded processing [duplicate]

I'm trying to learn & develop Image processing application based on opencv on a embedded board.As you know latest Ras-pi(ras-pi 3) has modern ARM A53 processor with a VideoCore that makes it a ...
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0answers
154 views

How to install OpenCV 3 on Raspbian Jessie

I followed installation procedure as in How to install OpenCV 3 on Raspbian Jessie. I am successful in entering OpenCV virtual environment. I am unable to compile and install OpenCVV (step 4 in the ...
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1answer
46 views

Geting errors with c++ using opencv on raspberry Pi

For Face Recognition using raspberry Pi with opencv. I have tried using C++ code which is failing to include the opencv files. Please comment any python code for face recognition using opencv.
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17 views

Scrambled images with OpenCV VideoCapture

I am trying to capture images with OpenCV and a webcam (640x480) connected Pi 2. When I set the resolution to half its maximum, i.e. 320x240, everything works fine. But when I increase resolution to ...
0
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1answer
47 views

Processed live video via Ethernet transfer

I'm trying to track an object with a webcam and my pi (let's call it pi1). Therefore I have a python script, which gives me a processed live video as an output. Besides, I have another pi (pi2) which ...
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0answers
11 views

Error to compile libfacerec-0.04 using cmake [duplicate]

I'm trying to compile libfacerec-0.04 for Face Recognition from here and I am following this site for face recognition. When I unzip and try to compile the API libfacerec-0.04 using sudo cmake . ...
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0answers
36 views

Unable to run openCV on my raspberry pi

The above are images of two terminal windows. i am trying to run OpenCV for which it is necessary to to workon cv. while i run it on ssh i am able to workon cv but it says cannot connect to X ...
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3answers
50 views

OpenCV Installing (make) errors on /modules/objdetect/

im a total noob to raspberry and I want to create an opencv gesture recognizing app with the pi camera (the one which is connected thru the socket next to the hdmi port) and was installing opencv ...
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0answers
30 views

Raspberry pi execution time calculated is different on the desktop terminal and command line?

Boot to desktop and boot to command line can be chosen using raspi-config. I decided to do a test to see whether my code will execute faster using the command line interface. How come the ...
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0answers
37 views

In Opencv, after padding zeroes the output image is like broken and stretched, but the same code works well in Windows. How could we resolve this?

I am using Raspberry Pi 2 model B with Rasbian OS. I am first finding the largest contour from the image, then I am extracting the contour alone using a bounding rectangle (cropping). Then in this ...
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0answers
42 views

uvcvideo: Non-zero status (-5) in status completion handler

I'm using a RPI2 and a USB webcam (Microsoft HD3000) to record video. Now, I'm doing extensive testing and I see that when I record long video (10-12 hours) I sometimes see an error in dmesg. ...
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2answers
567 views

Can't compile OpenCV 3.1 on Raspberry PI: Missing videoio.h, videodev.h,

All, I've followed these instructions: installing OpenCV 3.0 on raspberry pi b+ and these: http://www.pyimagesearch.com/2015/10/26/how-to-install-opencv-3-on-raspbian-jessie/#comment-389260 and ...
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0answers
14 views

HDMI image processing [duplicate]

I would like to know if is it possible to process images that came from a HDMI source (not a camera) with Raspberry Pi and OpenCV, even by using the HDMI to CSI-2 bridge (b102) or by using HDMI to ...
0
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1answer
149 views

Not able to Install openCV 2.4.9 on raspberry pi 2 model B

I am trying to install openCV 2.4.9 on raspberry pi 2 but facing some error regarding libtiff4-dev image format. I have tried with 'libtiff5-dev' also but it is not working. I dont know what the ...
2
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1answer
99 views

Is opencl supported in Raspberry Pi for stereo vision applications?

I am currently using the opencv library for implementing stereo vision on the raspberry pi. A colleague of mine is using an odroid sbc supporting opencl for parallel processing of matrices. Is ...
0
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1answer
292 views

Pi with Arch Linux and OpenCV: errors when running cmake

I have a Pi running a fresh Arch Linux installation and I want to install OpenCV 3, but I am facing an error that I do not have when installing OpenCV on my other computers. I wrote a script that ...
4
votes
1answer
157 views

Getting started with image processing using opencv in windows and using in raspberry pi

I am learning image processing using opencv in windows. In another project that I am working on, requires the image processing to be done in raspberry pi for object recognition. Since I do not own a ...
3
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1answer
113 views

Raspberry Pi Camera Module slower than Desktop Webcam

I'm using CodeBlock IDE on raspberry pi 2 with raspberry pi camera module to run face detection program (via Haar Cascade). Now I've compared its performance using Microsoft LifeCam (USB connection) ...
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0answers
93 views

Unmount USB Camera

I'm working in a Python app with opencv and a USB camera. Sometimes the camera driver throws an exception: OpenCV Error: Assertion failed (scn == 3 || scn == 4) in cvtColor, file ...
1
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1answer
78 views

Faster way to use Pi camera module with OpenCV C++

I learnt that The pi camera module does not work the same as the USB camera and VideoCapture cap(0) doesn't work with pi camera module. I am using this wrapper to get frames from pi camera module to ...
3
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2answers
897 views

OpenCV display image: window system doesn't support opengl

I have a project which uses the raspberry pi camera and openCV (also: ROS) to do some movement analysis. However, when I want to display the image (with the openCV API or a ROS node), there's an error ...
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0answers
120 views

help with OpenCV on Raspberry Pi 2

I have installed OpenCV 2.4.9 and 3.0 on my Raspberry pi 2. I have done everything as he said in this tutorial https://www.youtube.com/watch?v=_DMqGTsEo30 . But in the end of video he want to start a ...
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0answers
147 views

Corrupt JPEG data: extraneous bytes before marker, OpenCV C++, Raspberry Pi

I am trying to run OpenCV application on Raspberry PI. When video capture from an external camera starts (Logitech C270), the messages below are printed out: Corrupt JPEG data: 1 extemporaneous bytes ...
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0answers
35 views

Making a matplotlib work in an cv environment

I am trying image analysis on the Rpi using opencv and python. For this I am using the two commands source ~/.profile workon cv before doing the work. In this environment, when I try to import ...
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0answers
46 views

Install Opencv on an external Hard Drive

I am new to the raspberry world. I was trying to install opencv on my raspberry pi 2 and when I give the command: wget -O opencv.zip https://github.com/Itseez/opencv/archive/3.0.0.zip I get the ...
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0answers
180 views

Face recognition with USB Camera

How would I go about using face recognition with a USB camera, NOT the Pi Camera Board? A link to a tutorial would be fine. I know it was possible with OpenCV, but is it still, and how? Edit Can I ...
1
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1answer
150 views

Undefined reference to raspicam::_private::Private_Impl[…]

I am trying to make a project for the Pi B+ using ROS, RaspiCam and OpenCV (in c++). I want to write my code in QTCreator in a Virtual Machine running Ubuntu 14.04, and then transfer the files to my ...
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0answers
121 views

Trying to render image from grayscale camera with OpenCV in C++. Hangs after a few frames

have a grayscale camera (NOT COLOR) and am trying to render the image. I am running on Raspbian, on a Raspberry Pi 2. I've grabbed some code and bared it to a minimum and made some progress: #include ...
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0answers
98 views

what are the differences between opencv and simplecv in raspberry pi 2? [closed]

Should I install opencv or simplecv in raspberry pi 2? I code in python. Are there significant differences between them?
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1answer
89 views

Compile GCC for Raspberry Pi 2B - Patches required?

I need to compile a modern version of GCC in order to compile CMake in order to compile OpenCV 3.0.0. So I want to compile a modern and stable version of GCC for the Raspberry Pi 2b. I've read this ...
0
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1answer
451 views

Very high camera latency with OpenCV

I have an USB camera and the official RPI camera. Both cameras deliver images with a delay of around 5 seconds with OpenCV 3.0 (VideoCapture) on my Raspberry Pi 2. When I run the same application on ...
2
votes
1answer
25 views

OpenCV release vs development version

I made a simple application with OpenCV for the RPI2. To do so, I installed the 'development' package on my RPI2. sudo apt-get install libopencv-dev python-opencv Now, I want to install my ...
0
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1answer
367 views

Vehicle detection (OpenCV). Arduino or Rasp Pi? [closed]

I am new to open cv, and I'm starting to do a project. I want to use open cv for vehicle detection. I prefer using C++ language. Should I go with Raspberry pi or Arduino ? And why(what are the ...
0
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2answers
497 views

Pip exception while installing matplotlib on raspberry pi

I am working in a opencv project on the raspberry pi, and im using a virtual environment, but i used pip to install numpy, scipy and other libraries, but when trying to install matplotlib on pip by: ...
2
votes
1answer
68 views

Can I Execute a Jar-File that contains JavaCV 1.0 on a Raspberry PI?

Is this possible to run a Jar-File that contains JavaCV 1.0 on a Raspberry PI?