Mixing
Canny edge detection C++ is showing error?
1
I'm a complete beginner in both native c++ and opencv so please excuse me if my question is foolish.Basically I'm passing the bitmap to the native C++ for canny edge detection by using opencv but the problem is it's showing error. My procedure of doing this might be wrong. So, can anyone please help me to fix this issue ?
Code Java:
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);
Code native C++:
#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;
}
Error:
11-19 23:12:30.264 2645-2645/opengl.community.testopencv E/OpenGLRenderer: Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
MAX_TEXTURE_SIZE: 16384
android c++ opencv jni native asked Nov 20 '18 at 4:28
anonymousanonymous
5751617
|
show 1 more comment
1
I'm a complete beginner in both native c++ and opencv so please excuse me if my question is foolish.Basically I'm passing the bitmap to the native C++ for canny edge detection by using opencv but the problem is it's showing error. My procedure of doing this might be wrong. So, can anyone please help me to fix this issue ?
Code Java:
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);
Code native C++:
#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;
}
Error:
11-19 23:12:30.264 2645-2645/opengl.community.testopencv E/OpenGLRenderer: Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
MAX_TEXTURE_SIZE: 16384
asked Nov 20 '18 at 4:28
anonymousanonymous
5751617
1
IplImagewhy arent you usingMatinstead? AlsoIplImage CannyImg = *mCanny, you might want to useMat CannyImg=mCanny.clone().
– macroland
Nov 20 '18 at 4:33
@macroland sir thanks for your answer but I've got this code from some website so could you please elaborate what to change in detail
– anonymous
Nov 20 '18 at 4:36
docs.opencv.org/3.4/d6/d5b/structIplImage.html
– macroland
Nov 20 '18 at 4:37
@macroland sir I tried your Mat technique but it didn't work
– anonymous
Nov 20 '18 at 6:23
Did you debug to see if height and width and other parameters are sound?
– macroland
Nov 20 '18 at 6:44
|
show 1 more comment
1
1
1
I'm a complete beginner in both native c++ and opencv so please excuse me if my question is foolish.Basically I'm passing the bitmap to the native C++ for canny edge detection by using opencv but the problem is it's showing error. My procedure of doing this might be wrong. So, can anyone please help me to fix this issue ?
Code Java:
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);
Code native C++:
#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;
}
Error:
11-19 23:12:30.264 2645-2645/opengl.community.testopencv E/OpenGLRenderer: Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
MAX_TEXTURE_SIZE: 16384
asked Nov 20 '18 at 4:28
anonymousanonymous
5751617
I'm a complete beginner in both native c++ and opencv so please excuse me if my question is foolish.Basically I'm passing the bitmap to the native C++ for canny edge detection by using opencv but the problem is it's showing error. My procedure of doing this might be wrong. So, can anyone please help me to fix this issue ?
Code Java:
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);
Code native C++:
#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;
}
Error:
11-19 23:12:30.264 2645-2645/opengl.community.testopencv E/OpenGLRenderer: Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
MAX_TEXTURE_SIZE: 16384
asked Nov 20 '18 at 4:28
anonymousanonymous
5751617
asked Nov 20 '18 at 4:28
anonymousanonymous
5751617
asked Nov 20 '18 at 4:28
anonymousanonymous
5751617
asked Nov 20 '18 at 4:28
anonymousanonymous
5751617
asked Nov 20 '18 at 4:28
anonymousanonymous
5751617
5751617
1
IplImagewhy arent you usingMatinstead? AlsoIplImage CannyImg = *mCanny, you might want to useMat CannyImg=mCanny.clone().
– macroland
Nov 20 '18 at 4:33
@macroland sir thanks for your answer but I've got this code from some website so could you please elaborate what to change in detail
– anonymous
Nov 20 '18 at 4:36
docs.opencv.org/3.4/d6/d5b/structIplImage.html
– macroland
Nov 20 '18 at 4:37
@macroland sir I tried your Mat technique but it didn't work
– anonymous
Nov 20 '18 at 6:23
Did you debug to see if height and width and other parameters are sound?
– macroland
Nov 20 '18 at 6:44
|
show 1 more comment
1
IplImagewhy arent you usingMatinstead? AlsoIplImage CannyImg = *mCanny, you might want to useMat CannyImg=mCanny.clone().
– macroland
Nov 20 '18 at 4:33
@macroland sir thanks for your answer but I've got this code from some website so could you please elaborate what to change in detail
– anonymous
Nov 20 '18 at 4:36
docs.opencv.org/3.4/d6/d5b/structIplImage.html
– macroland
Nov 20 '18 at 4:37
@macroland sir I tried your Mat technique but it didn't work
– anonymous
Nov 20 '18 at 6:23
Did you debug to see if height and width and other parameters are sound?
– macroland
Nov 20 '18 at 6:44
1
1
IplImage why arent you using Mat instead? Also IplImage CannyImg = *mCanny, you might want to use Mat CannyImg=mCanny.clone().– macroland
Nov 20 '18 at 4:33
IplImage why arent you using Mat instead? Also IplImage CannyImg = *mCanny, you might want to use Mat CannyImg=mCanny.clone().– macroland
Nov 20 '18 at 4:33
@macroland sir thanks for your answer but I've got this code from some website so could you please elaborate what to change in detail
– anonymous
Nov 20 '18 at 4:36
@macroland sir thanks for your answer but I've got this code from some website so could you please elaborate what to change in detail
– anonymous
Nov 20 '18 at 4:36
docs.opencv.org/3.4/d6/d5b/structIplImage.html
– macroland
Nov 20 '18 at 4:37
docs.opencv.org/3.4/d6/d5b/structIplImage.html
– macroland
Nov 20 '18 at 4:37
@macroland sir I tried your Mat technique but it didn't work
– anonymous
Nov 20 '18 at 6:23
@macroland sir I tried your Mat technique but it didn't work
– anonymous
Nov 20 '18 at 6:23
Did you debug to see if height and width and other parameters are sound?
– macroland
Nov 20 '18 at 6:44
Did you debug to see if height and width and other parameters are sound?
– macroland
Nov 20 '18 at 6:44
|
show 1 more comment
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1
IplImagewhy arent you usingMatinstead? AlsoIplImage CannyImg = *mCanny, you might want to useMat CannyImg=mCanny.clone().– macroland
Nov 20 '18 at 4:33
@macroland sir thanks for your answer but I've got this code from some website so could you please elaborate what to change in detail
– anonymous
Nov 20 '18 at 4:36
docs.opencv.org/3.4/d6/d5b/structIplImage.html
– macroland
Nov 20 '18 at 4:37
@macroland sir I tried your Mat technique but it didn't work
– anonymous
Nov 20 '18 at 6:23
Did you debug to see if height and width and other parameters are sound?
– macroland
Nov 20 '18 at 6:44