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Canny边缘检测C++显示错误?

native java-native-interface opencv c++ android

anonymous · 技术社区 · 6 年前

我完全是这两方面的初学者 native c++ 和 opencv 所以,如果我的问题是愚蠢的,请原谅我。基本上我将位图传递给 native C++ 对于 Canny边缘提取 opencv

Java代码:

Bitmap new_bitmap=bitmap.copy(Bitmap.Config.ARGB_8888,true);

            int[] pixels = new int[bitmap.getWidth() * bitmap.getHeight()];

            //Converting bitmap to byteArray
            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            new_bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
            byte[] FrameData = stream.toByteArray();
            //bitmap.recycle();

            ImageProcessing(bitmap.getWidth(), bitmap.getHeight(), FrameData, pixels);
            new_bitmap.setPixels(pixels, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
            imgView.setImageBitmap(new_bitmap);

本地C++代码:

#include <jni.h>

#include <opencv2/core/core.hpp>
#include <opencv2/imgproc/imgproc_c.h>

using namespace std;
using namespace cv;

  Mat * mCanny = NULL;

  extern "C"
  jboolean
  Java_opengl_community_testopencv_MainActivity_ImageProcessing(
    JNIEnv* env, jobject thiz,
    jint width, jint height,
    jbyteArray NV21FrameData, jintArray outPixels)
 {
jbyte * pNV21FrameData = env->GetByteArrayElements(NV21FrameData, 0);
jint * poutPixels = env->GetIntArrayElements(outPixels, 0);

if ( mCanny == NULL )
{
    mCanny = new Mat(height, width, CV_8UC1);
}

Mat mGray(height, width, CV_8UC1, (unsigned char *)pNV21FrameData);
Mat mResult(height, width, CV_8UC4, (unsigned char *)poutPixels);
IplImage srcImg = mGray;
IplImage CannyImg = *mCanny;
IplImage ResultImg = mResult;

 cvCanny(&srcImg, &CannyImg, 80, 100, 3);
 //cvSmooth(&srcImg,&CannyImg,3,0,0,0);
 cvCvtColor(&CannyImg, &ResultImg, CV_GRAY2BGRA);
//cvCvtColor(&srcImg, &CannyImg, CV_BGR2GRAY);

env->ReleaseByteArrayElements(NV21FrameData, pNV21FrameData, 0);
env->ReleaseIntArrayElements(outPixels, poutPixels, 0);
return true;
}

错误:

11-19 23:12:30.264 2645-2645/opengl.community.testopencv E/OpenGLRenderer: Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
MAX_TEXTURE_SIZE: 16384