anb0483's profile - activity

Hello, I'm transforming an 'older' code wich is using IplIimage to the new c++ format. Actually I'm missing the function 'cvStartFindContours'. Can anyone help me, how to transfer this 'find poly contours' function to the new c++ standard?

> tInt find_poly_contours(IplImage*
> grayImg, CvMemStorage* storage,
> CvSeq** firstContour, tFloat64 eps) {
>   CvContourScanner scanner = 0;   CvSeq
> *contour = 0;     tInt count = -1;    tInt sub = 0;   tFloat64 area;
> 
>   //  if (!firstContour)
> LOG_DUMP("Error->find_contours:= NULL
> double CvSeq pointer");
>   //  *firstContour = 0;
> 
>   scanner =
> cvStartFindContours(grayImg, storage,
> sizeof(CvContour), CV_RETR_TREE,
> CV_CHAIN_APPROX_SIMPLE, cvPoint(0,
> 0));  while (1){      count++;        contour
> = cvFindNextContour(scanner);         if (contour == NULL) break;         area =
> cvContourArea(contour, CV_WHOLE_SEQ,
> 0);       // tree pruning         if (area < 6
>           || contour->total < 4           ){
>           cvSubstituteContour(scanner, 0);
>           sub++;          count--;        }   }
>   *firstContour =
> cvEndFindContours(&scanner);  if
> (count != 0){         *firstContour =
> cvApproxPoly(*firstContour,
> sizeof(CvContour), storage,
> CV_POLY_APPROX_DP, eps, 1); //
> recursive     }
> 
>   //LOG_DUMP(cString::Format("Num of
> Cont in find_contours (%d) and number
> sub (%d)",count, sub));
> 
>   return count; }

summarized it is not possible to use IplImage under Android or?, without the use of javacv?

It is not clear for my why the data typ

'IplImage'

is not workin with Android!The type is mentioned in documentation 2.4.10. Also the 2.1 Mat - The Basics Image Container says:

Luckily C++ came around and introduced the concept of classes making easier for the user through automatic memory management (more or less). The good news is that C++ is fully compatible with C so no compatibility issues can arise from making the change. Therefore, OpenCV 2.0 introduced a new C++ interface which offered a new way of doing things which means you do not need to fiddle with memory management, making your code concise (less to write, to achieve more).

Can someone explain me the difference?

OpenCVAndroid-SDK, official supported from OpenCv, but what is javaCV?, is it working with android also?

I'm trying to use a simple call, which is working at Visual Studio and C++ and OpenCv!

IplImage* in = cvLoadImage("C:\Bilder\Bild1.png");

But with OpenCV-2.4.10-android-sdk and Eclipse it isnt, I'm getting this error:

IplImage cannot be resolved to a type

Hello together,

i want to wrap a C++ program with included "OpenCV library" to Java! Is there any tutorial available how to do this?

I found the "Face detection sample" in the OpenCV-Android-Package which is mentioned in the "How to start" guide from http://opencv.org/platforms/android.html. There I can find the wrapper and the Java interface ... but I'm missing a tutorial, or a "how to" i can wrap my own C++ project with included "OpenCV library" to Java!

Have anyone an idea, where i can find a guide which lead me to wrapping my C++ project to Java?

Thanks guys, Andi