AlexanderShishkov's profile - activity

If you want to get access to video camera, just use index of camera (0-based) instead of filename. Unfortunately I know nothing about CCS, you can try to use new headers:

#include "opencv2/opencv.hpp"

Something like this:

#include "cv.h"
#include "highgui.h"
int main(int argc, char** argv)
{
CvCapture* capture=0;
IplImage* frame=0;
capture = cvCaptureFromAVI("C:\\video.avi"); 
if( !capture )
    throw "Error when reading steam_avi";

cvNamedWindow( "w", 1);

for( ; ; )
{
    frame = cvQueryFrame( capture );
    if(!frame)
        break;
    cvShowImage("w", frame);
}
cvWaitKey(0); 
cvDestroyWindow("w");
cvReleaseImage(&frame);
}

Hello guys! Thanks for the report. Firstly we are working on the next update of the site. We want to add new captcha method, because we have to spent a lot of time to stop spam now. After this update (it will be at the beginning of January) we start to work on tags.

Password restoring should work now.

Hello, I have a patch for OpenCV, and I want to contribute it. It is possible and is there any coding guidelines for OpenCV project?

How can I do that in C++ and Python?

Unfortunately OpenCV doesn't support animated gif. You can try to use imagemagick to do it.

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Firstly please don't use C interface in iOS environment. C++ environment is more convenient.

It is possible to use C interface. Please add more headers with _c appendix:

#include "opencv2/imgproc/types_c.h" 
#include "opencv2/imgproc/impgroc_c.h"
....

Recommended way is to use the following header:

#ifdef __cplusplus
#include <opencv2 opencv.hpp="">
#endif

    Mat m1(h,w,CV_8UC3, data); // assumes bgr capture;
    // now, you probably do this in a callback function, 
    //  and your 'data' ptr will go out of scope,
    //  thus we need a 'deep copy':
    Mat m2 = m1.clone();

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If you find some issues connected with this website, please add them to https://github.com/opencv-infrastruct...

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If you have any problems with your account let me know here.

@AlexanderShishkov - could this guide be added to the contribute page?

Yes, it converts each channel to 8 bit.

In what way points should be joined? What is the model for your task?

For example, we have 6 points with x and y coordinates. Two of them are outliers. We want to join remaining points using RanSac. Thanks in advance.

Let imagine Laplacian filter 3x3 kernel:

Let consider pixel with the following neighborhood:

1   1    1 
1   255 1
1   1    1

After applying Laplacian filter pixel value should be equal -4*255 + 4 = -1016

If we continue use CV_8U type (unsigned char 0-255) we can't save this value. So we should change type to CV_16S (signed short int, –32,768 to 32,767)

E.g. iOS doesn't support OpenMP. parallel_for_ supports different frameworks for parallelisation (TBB, GCD, Concurrency, ...) So you code for parallelisation can be more cross platform than OpenMP.

I have created github project for the website. Please use github issues for this project https://github.com/opencv-infrastruct... if you have some problems with this website.

Hi,

I'm working on creating a disparity map from a stereo image pair using OpenCV. I'm trying to look at a 3D model of an F-15. The disparity map I'm generating is very noisey and seems to be ignoring the plane altogether (almost creating a shadow of the plane among the noise). Does anyone know what may be causing this?

I can generate clear disparity maps from other images (inclusing the provided example images).

My block-mathing code is: StereoSGBM(min_disparity=80, num_disp=96, sad_window_size=3, uniqueness=15, speckle_window_size=10, speckle_range=2, p1=1, p2-64, max_disparity=124, full_dp=False, settings=None)

Update: Thank you to those who responded! To overcome difficulties matching textureless regions, I added a camo pattern to the wings and adjusted the SGBM parameters as suggested in the comments. The resulting disparity map is still poor.

StereoSGBM(min_disparity=0, num_disp=96, sad_window_size=9, uniqueness=15, speckle_window_size=10, speckle_range=2, p1=1, p2=64, max_disparity=1, full_dp=False, settings=None)

Any assistance would be greatly appreciated. Thank you!

I have toasted the directory in android and it is in data/data. I want to store and access the images in SD card.

You can use http://docs.opencv.org/3.0-beta/openc... or online docs: http://docs.opencv.org/3.0-beta/

I don't see described problems.