opencv 3.0 video error V4L/V4L2: VIDIOC_S_CROP

[ian1]

i'm trying to this with logitec c110 webcam and sparkfun edison base-board

but i skipped 2. Enabling UVC ( USB Video device Class ) by customizing the Linux Kernel ( optinal )

https://software.intel.com/en-us/articles/opencv-300-beta-ipp-tbb-enabled-on-yocto-with-intel-edison https://software.intel.com/en-us/articles/opencv-300-beta-ipp-tbb-enabled-on-yocto-with-intel-edison

environment is

Yocto linux 1.7.3

opencv 3.0.0

camera is ok, because i test this applicaion.(node.js & ffmpeg)

https://github.com/drejkim/edi-cam GitHub - drejkim/edi-cam: Video streaming on Intel Edison

but opencv 3.0.0 excuted by this code. error is appear

(for /home/ext is my sdcard directory. 8GB)

root@edison:/home/ext/opencv-3.0.0/samples/cpp# ./cpp-example-facedetect

VIDEOIO ERROR: V4L/V4L2: VIDIOC_S_CROP

facedetect.cpp like this.

# include "opencv2/opencv.hpp"

# include "opencv2/core/utility.hpp"

# include "opencv2/imgproc.hpp"

# include "opencv2/imgcodecs.hpp"

# include "opencv2/highgui.hpp"

using namespace cv;

using namespace std;

int main(int, char**)

{

VideoCapture cap(0); // open the default camera

if(!cap.isOpened()) // check if we succeeded

return -1;

return 0;

}

v4l2-ctl command is worked.

root@edison:/home/ext/opencv-3.0.0/samples/cpp# lsusb

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 001 Device 002: ID 046d:0829 Logitech, Inc.

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

root@edison:/home/ext/opencv-3.0.0/samples/cpp# v4l2-ctl -info

Video input set to 0 (Camera 1: ok)

root@edison:/home/ext/opencv-3.0.0/samples/cpp# v4l2-ctl --list-devices

Webcam C110 (usb-dwc3-host.2-1):

/dev/video0

root@edison:/home/ext/opencv-3.0.0/samples/cpp# v4l2-ctl --list-formats

ioctl: VIDIOC_ENUM_FMT

Index : 0

Type : Video Capture

Pixel Format: 'YUYV'

Name : YUV 4:2:2 (YUYV)

Index : 1

Type : Video Capture

Pixel Format: 'MJPG' (compressed)

Name : MJPEG

anyone help this error?

anyway v4l2 installed by opkg package manager.

root@edison:/home/ext/opencv-3.0.0/samples/cpp# opkg install v4l-utils

Package v4l-utils (1.0.1-r0) installed in root is up to date.

[idata · Accepted solution]

Hello insen.an,

In the document you posted above a newer version is mentioned: https://software.intel.com/en-us/articles/opencv-300-ipp-tbb-enabled-on-yocto-with-intel-edison https://software.intel.com/en-us/articles/opencv-300-ipp-tbb-enabled-on-yocto-with-intel-edison. Have you tried to follow this guide? If you haven't, I'd suggest you to try it and let us know what happens.Peter.