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asked 2014-03-26 02:52:27 -0600

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how to make vignette filter ?

How we can make vignette filter in opencv? Do we need to implement any algorithm for it or only to play with the values of BGR ? Is there any implementation of vignette ? How we can make this type of filters

how to make vignette filter ?

How we can make vignette filter in opencv? Do we need to implement any algorithm for it or only to play with the values of BGR ? Is there any I saw its implementation of vignette ? How we can make this type of filtershere but i didn't understand it clearly . Anyone with algorithms guidance is highly appriciated.

How to deal with 8UC3 and 8UC4 in android ndk

My code is working fine with showing brightness in the image using below code

   jint* _in = env->GetIntArrayElements(in, 0);
   jint* _out = env->GetIntArrayElements(out, 0);

   Mat mSrc(height, width, CV_8UC4, (unsigned char*)_in);
   Mat bgra(height, width, CV_8UC4, (unsigned char*)_out);
   vector<Mat> sChannels;
   split(mSrc, sChannels);

        for(int i=0; i<sChannels.size(); i++)
        {
            Mat channel = sChannels[i];
            equalizeHist(channel, channel);
        }
        merge(sChannels, bgra);
   env->ReleaseIntArrayElements(in, _in, 0);
   env->ReleaseIntArrayElements(out, _out, 0);

   jint retVal;
   int ret = 1;
   retVal = jint(retVal);
   return retVal;

It work for me too for changing image into grayscale but in this way :

   Mat mSrc(height, width, CV_8UC4, (unsigned char*)_in);
   Mat gray(height, width, CV_8UC1);
   Mat bgra(height, width, CV_8UC4, (unsigned char*)_out);
   cvtColor(mSrc , gray , CV_BGRA2GRAY);
   cvtColor(gray , bgra , CV_GRAY2BGRA);

But when i am trying to use bilateralfilter with it , which only work with 3 channels as given here , how to make vignette deal with it ? because java bitmap accept RGBA format ,and when i change the above into 

Mat mSrc(height, width, CV_8UC3, (unsigned char*)_in); 
Mat mSrc(height, width, CV_8UC3, (unsigned char*)_in);

somehow bilateral filter ?

How we show me output , but what if I have apply all these filter on one image ? how can make vignette filter in opencv? Do we need to implement any algorithm for it or I handle this problem ? because there may be other algorithms too which only to play with the values of BGR ? I saw its implementation here but i didn't understand it clearly . Anyone with algorithms guidance is highly appriciated.deal with 3 channels.

How to deal with 8UC3 and 8UC4 in android ndkCode is running in VS2010 but not showing output in android

My code is working fine with in Visual Studio using opencv but its not showing brightness in the image using output in android ndk application and its not showing even error , below codemy code.

   jint* _in = env->GetIntArrayElements(in, 0);
   jint* _out = env->GetIntArrayElements(out, 0);

void blending_softmode(Mat& img1, Mat& img2, Mat& out)
{
    Mat mSrc(height, width, result(img1.size(), CV_32FC4);                           // result image is same size of input image

    // Img2 is the value of solid colors

    img2 = Mat(img1.size(), img1.type(), Scalar(186, 44, 28, 0));

    // Iterate through rows , cols and colors(image channels)

    for (int i = 0; i < img1.size().height; ++i){
        for (int j = 0; j < img1.size().width; ++j){

            for (int c = 0; c<img1.channels(); c++){                // Iterate through colors

                //Formula for softmode blending
                float target = (float)img1.at<uchar>(i, 4 * j + c) / 255.;
                float blend = (float)img2.at<uchar>(i, 4 * j + c) / 255.;
                if (blend > 0.5){
                    result.at<float>(i, 4 * j + c) = ((1 - (1 - target) * (1 - 2 * (blend - 0.5))));
                }
                else{
                    result.at<float>(i, 4 * j + c) = (target * (2 * blend));
                }
            }
        }
    }
    result.convertTo(out, CV_8UC4, (unsigned char*)_in);
   Mat bgra(height, width, CV_8UC4, (unsigned char*)_out);
   vector<Mat> sChannels;
   split(mSrc, sChannels);

        for(int i=0; i<sChannels.size(); i++)
        {
            Mat channel = sChannels[i];
            equalizeHist(channel, channel);
        255);

}
        merge(sChannels, bgra);
   env->ReleaseIntArrayElements(in, _in, 0);
   env->ReleaseIntArrayElements(out, _out, 0);

   jint retVal;
   int ret = 1;
   retVal = jint(retVal);
   return retVal;

It work for me too for changing image into grayscale in visual studio when I use it as 8UC3 but in this way :its not work in 8UC4 in android but showing no error , just no output in imageview

   Mat mSrc(height, width, CV_8UC4, (unsigned char*)_in);
   Mat gray(height, width, CV_8UC1);
   Mat bgra(height, width, CV_8UC4, (unsigned char*)_out);
   cvtColor(mSrc , gray , CV_BGRA2GRAY);
   cvtColor(gray , bgra , CV_GRAY2BGRA);

But when i am trying to use bilateralfilter with it , which only work with 3 channels as given here , how to deal with it ? because java bitmap accept RGBA format ,and when i change the above into 

Mat mSrc(height, width, CV_8UC3, (unsigned char*)_in); 
Mat mSrc(height, width, CV_8UC3, (unsigned char*)_in);

somehow bilateral filter show me output , but what if I have apply all these filter on one image ? how can I handle this problem ? because there may be other algorithms too which only deal with 3 channels.

Code is running in VS2010 but not showing output in android

My code is working in Visual Studio using opencv but its not showing output in android ndk application and its not showing even error , below my code.

void blending_softmode(Mat& sow(Mat& img1, Mat& img2, Mat& out)
{
    Mat result(img1.size(), CV_32FC4);                           // result image is same size of input image

    // Img2 is the value of solid colors
 
    img2 = Mat(img1.size(), img1.type(), Scalar(186, 44, 28, 0));

    // Iterate through rows , cols and colors(image channels)

    for (int i = 0; i < img1.size().height; ++i){
        for (int j = 0; j < img1.size().width; ++j){

            for (int c = 0; c<img1.channels(); c++){                // Iterate through colors

                //Formula for softmode blending
                 float target = (float)img1.at<uchar>(i, 4 * j + c) / 255.;
                float blend = (float)img2.at<uchar>(i, 4 * j + c) / 255.;
                if (blend > 0.5){
                    result.at<float>(i, 4 * j + c) = ((1 - (1 - target) * (1 - 2 * (blend - 0.5))));
                }
                else{
                    result.at<float>(i, 4 * j + c) = (target * (2 * blend));
                }
            }
        }
    }
    result.convertTo(out, CV_8UC4, 255);

}

It work for me in visual studio when I use it as 8UC3 but its not work in 8UC4 in android but showing no error , just no output in imageviewimageview . The same thing work for me in android when i change the formula , but this formula work for me on visual studio . Some images work for me when i have the same code but different formula's in 

if (blend > 0.5){
                        result.at<float>(i, 4 * j + c) = ((1 - (1 - target) * (1 - 2 * (blend - 0.5))));
                    }
                    else{
                        result.at<float>(i, 4 * j + c) = (target * (2 * blend));
                    }

And they are showing output.

Code is running in VS2010 but not Result showing output in androidlining on image

My code is working in Visual Studio I am using opencv but its not with android ndk , Below is my jni code which is showing output in android ndk application me error on resize and its not showing even error , below my code.multiply function :

void sow(Mat& Vite(Mat& img1, Mat& img2, Mat& out)
{
    Mat result(img1.size(), CV_32FC4);                           

    img2 = Mat(img1.size(), img1.type(), Scalar(186, 44, 28, 0));

    for (int i = 0; i < img1.size().height; ++i){
        for (int j = 0; j < img1.size().width; ++j){

            for (int c = 0; c<img1.channels(); c++){                // Iterate through colors

                //Formula 
                float target = (float)img1.at<uchar>(i, 4 * j + c) / 255.;
                float blend = (float)img2.at<uchar>(i, 4 * j + c) / 255.;
                if (blend > 0.5){
                    result.at<float>(i, 4 * j + c) = ((1 - (1 - target) * (1 - 2 * (blend - 0.5))));
                }
                else{
                    result.at<float>(i, 4 * j + c) = (target * (2 * blend));
                }
            }
        }
    }
cv::resize(img2,img2,img1.size());
    img1.convertTo(img1,CV_32FC4,1.0/255.0);
    img2.convertTo(img2,CV_32FC4,1.0/255.0);
    cv::Mat result(img2.size(), CV_32FC4);
    result=I1+I2;
    result.convertTo(out, CV_8UC4, 255);
 }

It work for me Below is my jni calling method :

JNIEXPORT jint JNICALL Java_org_opencv_samples_NativeActivity_CvNativeActivity_Vig(
        JNIEnv* env, jobject, jint width, jint height, jint i, jint j, jintArray in,jintArray inn,
        jintArray out) {
    jint* _in = env->GetIntArrayElements(in, 0);
    jint* _inn = env->GetIntArrayElements(inn, 0);
    jint* _out = env->GetIntArrayElements(out, 0);

    Mat mSrc(height, width, CV_8UC4, (unsigned char*) _in);
    Mat nSrc(i, j, CV_8UC4, (unsigned char*) _inn);
    Mat bgra(height, width, CV_8UC4, (unsigned char*) _out);
    Vite(mSrc,nSrc, bgra);
    jint retVal;
    int ret = 1;
    retVal = jint(retVal);
    return retVal;
    }

Result :

enter image description here

The other way I am trying in visual studio when I use it as 8UC3 but its not work in 8UC4 in android but showing no which i am getting error , just no output in imageview . The same thing work for me in android when i change the formula , but this formula work for me on visual studio . Some images work for me when i have the same code but different formula's in resize and merging

if (blend > 0.5){
                        result.at<float>(i, 4 * j + c) = ((1 - (1 - target) * (1 - 2 * (blend - 0.5))));
                    void Vite(Mat& img1, Mat& img2, Mat& out)
 {
    cv::resize(img2,img2,img1.size());
    img1.convertTo(img1,CV_32FC4,1.0/255.0);
    img2.convertTo(img2,CV_32FC4,1.0/255.0);
    vector<Mat> ch; 
    split(Img1,ch);

    Mat mask = ch[4].clone();              

    ch.resize(4);

    Mat I1,I2,result;

    cv::multiply(mask,ch[0],ch[0]);
    cv::multiply(mask,ch[1],ch[1]);
    cv::multiply(mask,ch[2],ch[2]);
    cv::multiply(mask,ch[3],ch[3]);
    merge(ch,I1);

    vector<Mat> ch2(4);
    split(Img2,ch2);
    cv::multiply(1.0-mask,ch2[0],ch2[0]);
    cv::multiply(1.0-mask,ch2[1],ch2[1]);
    cv::multiply(1.0-mask,ch2[2],ch2[2]);
    cv::multiply(1.0-mask,ch2[3],ch2[3]);
    merge(ch2,I2);
    result=I1+I2;
    result.convertTo(out, CV_8UC4, 255);
 }
                    else{
                        result.at<float>(i, 4 * j + c) = (target * (2 * blend));
                    }

And they are showing output.

Result showing lining on image

I am using opencv with android ndk , Below is my jni code which is showing me error on resize and multiply function :

void Vite(Mat& img1, Mat& img2, Mat& out)
{
    cv::resize(img2,img2,img1.size());
    img1.convertTo(img1,CV_32FC4,1.0/255.0);
    img2.convertTo(img2,CV_32FC4,1.0/255.0);
    cv::Mat result(img2.size(), CV_32FC4);
    result=I1+I2;
result=img1+img2;
    result.convertTo(out, CV_8UC4, 255);
}

Below is my jni calling method :

JNIEXPORT jint JNICALL Java_org_opencv_samples_NativeActivity_CvNativeActivity_Vig(
        JNIEnv* env, jobject, jint width, jint height, jint i, jint j, jintArray in,jintArray inn,
        jintArray out) {
    jint* _in = env->GetIntArrayElements(in, 0);
    jint* _inn = env->GetIntArrayElements(inn, 0);
    jint* _out = env->GetIntArrayElements(out, 0);

    Mat mSrc(height, width, CV_8UC4, (unsigned char*) _in);
    Mat nSrc(i, j, CV_8UC4, (unsigned char*) _inn);
    Mat bgra(height, width, CV_8UC4, (unsigned char*) _out);
    Vite(mSrc,nSrc, bgra);
    jint retVal;
    int ret = 1;
    retVal = jint(retVal);
    return retVal;
    }

Result :

enter image description here

The other way I am trying in which i am getting error on resize and merging

#include <jni.h>
#include "opencv2/core/core.hpp"
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <stdio.h>

 void Vite(Mat& img1, Mat& img2, Mat& out)
 {
    cv::resize(img2,img2,img1.size());
    img1.convertTo(img1,CV_32FC4,1.0/255.0);
    img2.convertTo(img2,CV_32FC4,1.0/255.0);
    vector<Mat> ch; 
    split(Img1,ch);
split(img1,ch);

    Mat mask = ch[4].clone();              

    ch.resize(4);
ch[3].clone();              

    ch.resize(3);

    Mat I1,I2,result;

    cv::multiply(mask,ch[0],ch[0]);
    cv::multiply(mask,ch[1],ch[1]);
    cv::multiply(mask,ch[2],ch[2]);
    cv::multiply(mask,ch[3],ch[3]);
    merge(ch,I1);

    vector<Mat> ch2(4);
    split(Img2,ch2);
ch2(3);
    split(img2,ch2);
    cv::multiply(1.0-mask,ch2[0],ch2[0]);
    cv::multiply(1.0-mask,ch2[1],ch2[1]);
    cv::multiply(1.0-mask,ch2[2],ch2[2]);
    cv::multiply(1.0-mask,ch2[3],ch2[3]);
    merge(ch2,I2);
    result=I1+I2;
    result.convertTo(out, CV_8UC4, 255);
 }

Clone show me the error

Method 'clone' could not be resolved

and multiply show me the error

Invalid arguments '
Candidates are:
void multiply(const cv::_InputArray &, const cv::_InputArray &, const cv::_OutputArray &, double, int)
'

My java calling , where img1 is image in snapshot and img2 image 2 is vignette of 4 channel is input and out is output

InputStream is , Vign;
is = this.getResources().openRawResource(R.drawable.me);
final Bitmap bmInImg = BitmapFactory.decodeStream(is);
Vign = this.getResources().openRawResource(R.drawable.vig2);
final Bitmap bmInImg2 = BitmapFactory.decodeStream(Vign);

mPhotoIntArray = new int[bmInImg.getWidth() * bmInImg.getHeight()];
nPhotoIntArray = new int[bmInImg.getWidth() * bmInImg.getHeight()];
vPhotoIntArray = new int[bmInImg2.getWidth() * bmInImg2.getHeight()];
imageview_1.setImageBitmap(bmInImg);

bmInImg.getPixels(mPhotoIntArray, 0, bmInImg.getWidth(), 0, 0, bmInImg.getWidth(), bmInImg.getHeight());
bmInImg2.getPixels(vPhotoIntArray, 0, bmInImg2.getWidth(), 0, 0, bmInImg2.getWidth(), bmInImg2.getHeight());

mCannyOutArray = new int[bmInImg.getWidth() * bmInImg.getHeight()];
final Bitmap bmOutImg = Bitmap.createBitmap(bmInImg.getWidth(), bmInImg.getHeight(), Config.ARGB_8888);  
bmOutImg.setPixels(mCannyOutArray, 0, bmInImg.getWidth(), 0, 0, bmInImg.getWidth(), bmInImg.getHeight());

Vig(bmInImg.getHeight(),bmInImg.getWidth(),bmInImg2.getHeight(),bmInImg2.getWidth(), mPhotoIntArray,vPhotoIntArray, mCannyOutArray); 
Bitmap bmOutImg = Bitmap.createBitmap(bmInImg.getWidth(), bmInImg.getHeight(), Config.ARGB_8888);  
bmOutImg.setPixels(mCannyOutArray, 0, bmInImg.getWidth(), 0, 0, bmInImg.getWidth(), bmInImg.getHeight());   
imageview_2.setImageBitmap(bmOutImg);

Result showing lining on image

I am using opencv with android ndk , Below is my jni code which is showing me error on resize and multiply function :

void Vite(Mat& img1, Mat& img2, Mat& out)
{
    cv::resize(img2,img2,img1.size());
    img1.convertTo(img1,CV_32FC4,1.0/255.0);
    img2.convertTo(img2,CV_32FC4,1.0/255.0);
    cv::Mat result(img2.size(), CV_32FC4);
    result=img1+img2;
    result.convertTo(out, CV_8UC4, 255);
}

Below is my jni calling method :

JNIEXPORT jint JNICALL Java_org_opencv_samples_NativeActivity_CvNativeActivity_Vig(
        JNIEnv* env, jobject, jint width, jint height, jint i, jint j, jintArray in,jintArray inn,
        jintArray out) {
    jint* _in = env->GetIntArrayElements(in, 0);
    jint* _inn = env->GetIntArrayElements(inn, 0);
    jint* _out = env->GetIntArrayElements(out, 0);

    Mat mSrc(height, width, CV_8UC4, (unsigned char*) _in);
    Mat nSrc(i, j, CV_8UC4, (unsigned char*) _inn);
    Mat bgra(height, width, CV_8UC4, (unsigned char*) _out);
    Vite(mSrc,nSrc, bgra);
    jint retVal;
    int ret = 1;
    retVal = jint(retVal);
    return retVal;
    }

Result :

enter image description here

The other way I am trying in which i am getting error on resize and merging

#include <jni.h>
#include "opencv2/core/core.hpp"
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <stdio.h>

 void Vite(Mat& img1, Mat& img2, Mat& out)
 {
    cv::resize(img2,img2,img1.size());
    img1.convertTo(img1,CV_32FC4,1.0/255.0);
    img2.convertTo(img2,CV_32FC4,1.0/255.0);
    vector<Mat> ch; 
    split(img1,ch);

    Mat mask = ch[3].clone();              

    ch.resize(3);

    Mat I1,I2,result;

    cv::multiply(mask,ch[0],ch[0]);
    cv::multiply(mask,ch[1],ch[1]);
    cv::multiply(mask,ch[2],ch[2]);
    cv::multiply(mask,ch[3],ch[3]);
    merge(ch,I1);

    vector<Mat> ch2(3);
    split(img2,ch2);
    cv::multiply(1.0-mask,ch2[0],ch2[0]);
    cv::multiply(1.0-mask,ch2[1],ch2[1]);
    cv::multiply(1.0-mask,ch2[2],ch2[2]);
    cv::multiply(1.0-mask,ch2[3],ch2[3]);
    merge(ch2,I2);
    result=I1+I2;
    result.convertTo(out, CV_8UC4, 255);
 }

Clone show me the error

Method 'clone' could not be resolved

and multiply show me the error

Invalid arguments '
Candidates are:
void multiply(const cv::_InputArray &, const cv::_InputArray &, const cv::_OutputArray &, double, int)
'

My java calling , where img1 is image in snapshot and img2 image 2 is vignette of 4 channel is input and out is output

InputStream is , Vign;
is = this.getResources().openRawResource(R.drawable.me);
final Bitmap bmInImg = BitmapFactory.decodeStream(is);
Vign = this.getResources().openRawResource(R.drawable.vig2);
final Bitmap bmInImg2 = BitmapFactory.decodeStream(Vign);

mPhotoIntArray = new int[bmInImg.getWidth() * bmInImg.getHeight()];
nPhotoIntArray = new int[bmInImg.getWidth() * bmInImg.getHeight()];
vPhotoIntArray = new int[bmInImg2.getWidth() * bmInImg2.getHeight()];
imageview_1.setImageBitmap(bmInImg);

bmInImg.getPixels(mPhotoIntArray, 0, bmInImg.getWidth(), 0, 0, bmInImg.getWidth(), bmInImg.getHeight());
bmInImg2.getPixels(vPhotoIntArray, 0, bmInImg2.getWidth(), 0, 0, bmInImg2.getWidth(), bmInImg2.getHeight());

mCannyOutArray = new int[bmInImg.getWidth() * bmInImg.getHeight()];
final Bitmap bmOutImg = Bitmap.createBitmap(bmInImg.getWidth(), bmInImg.getHeight(), Config.ARGB_8888);  
bmOutImg.setPixels(mCannyOutArray, 0, bmInImg.getWidth(), 0, 0, bmInImg.getWidth(), bmInImg.getHeight());

Vig(bmInImg.getHeight(),bmInImg.getWidth(),bmInImg2.getHeight(),bmInImg2.getWidth(), mPhotoIntArray,vPhotoIntArray, mCannyOutArray); 
Bitmap bmOutImg = Bitmap.createBitmap(bmInImg.getWidth(), bmInImg.getHeight(), Config.ARGB_8888);  
bmOutImg.setPixels(mCannyOutArray, 0, bmInImg.getWidth(), 0, 0, bmInImg.getWidth(), bmInImg.getHeight());   
imageview_2.setImageBitmap(bmOutImg);

Result showing lining on image

I am using opencv with android ndk , Below for that I just try my code first on visual studio with opencv , it works fine on it and then I put it on android, but something is my jni code which confusing in understanding function and their cause of error like in for example the simple program

    resize(image,image,image2.size());
    image.convertTo(image,CV_32FC4,1.0/255.0);
    image2.convertTo(image2,CV_32FC4,1.0/255.0);

    vector<Mat> channel; 
    split(image,channel);

    Mat mask = image.clone();            // clone function work fine
    //Mat mask = channel[3].clone();     // clone function show me error         

  //  channel.resize(3);  // show error

    Mat it;

    multiply(mask,channel[0],channel[0]);
    multiply(mask,channel[1],channel[1]);
    multiply(mask,channel[2],channel[2]);
    merge(channel,it);

When I use Mat mask = channel[3].clone(); It show me error of Method 'clone' could not be resolved but when I use Mat mask = image.clone(); it works fine. Why is showing that ?

Same when I use channel.resize(3); it show me error on resize in resize function , error is Invalid arguments 'Candidates are: void resize(?, cv::Mat)'.

and multiply function :

when I move on to multiply function it show me error of Invalid arguments ' Candidates are: void Vite(Mat& img1, Mat& img2, Mat& out)
{
    cv::resize(img2,img2,img1.size());
    img1.convertTo(img1,CV_32FC4,1.0/255.0);
    img2.convertTo(img2,CV_32FC4,1.0/255.0);
    cv::Mat result(img2.size(), CV_32FC4);
    result=img1+img2;
    result.convertTo(out, CV_8UC4, 255);
}

Below is my jni calling method :

JNIEXPORT jint JNICALL Java_org_opencv_samples_NativeActivity_CvNativeActivity_Vig(
        JNIEnv* env, jobject, jint width, jint height, jint i, jint j, jintArray in,jintArray inn,
        jintArray out) {
    jint* _in = env->GetIntArrayElements(in, 0);
    jint* _inn = env->GetIntArrayElements(inn, 0);
    jint* _out = env->GetIntArrayElements(out, 0);

    Mat mSrc(height, width, CV_8UC4, (unsigned char*) _in);
    Mat nSrc(i, j, CV_8UC4, (unsigned char*) _inn);
    Mat bgra(height, width, CV_8UC4, (unsigned char*) _out);
    Vite(mSrc,nSrc, bgra);
    jint retVal;
    int ret = 1;
    retVal = jint(retVal);
    return retVal;
    }

Result :

enter image description here

My java calling , where img1 is image in snapshot multiply(const cv::_InputArray &, const cv::_InputArray &, const cv::_OutputArray&, double, int)' .

Though these all function are working in visual studio using opencv and img2 image 2 is vignette they are also working in android when using on different scenario's .

I am working on native environment using eclipse with opencv android version of 4 channel is input and out is output

InputStream is , Vign;
is = this.getResources().openRawResource(R.drawable.me);
final Bitmap bmInImg = BitmapFactory.decodeStream(is);
Vign = this.getResources().openRawResource(R.drawable.vig2);
final Bitmap bmInImg2 = BitmapFactory.decodeStream(Vign);

mPhotoIntArray = new int[bmInImg.getWidth() * bmInImg.getHeight()];
nPhotoIntArray = new int[bmInImg.getWidth() * bmInImg.getHeight()];
vPhotoIntArray = new int[bmInImg2.getWidth() * bmInImg2.getHeight()];
imageview_1.setImageBitmap(bmInImg);

bmInImg.getPixels(mPhotoIntArray, 0, bmInImg.getWidth(), 0, 0, bmInImg.getWidth(), bmInImg.getHeight());
bmInImg2.getPixels(vPhotoIntArray, 0, bmInImg2.getWidth(), 0, 0, bmInImg2.getWidth(), bmInImg2.getHeight());

mCannyOutArray = new int[bmInImg.getWidth() * bmInImg.getHeight()];
final Bitmap bmOutImg = Bitmap.createBitmap(bmInImg.getWidth(), bmInImg.getHeight(), Config.ARGB_8888);  
bmOutImg.setPixels(mCannyOutArray, 0, bmInImg.getWidth(), 0, 0, bmInImg.getWidth(), bmInImg.getHeight());

Vig(bmInImg.getHeight(),bmInImg.getWidth(),bmInImg2.getHeight(),bmInImg2.getWidth(), mPhotoIntArray,vPhotoIntArray, mCannyOutArray); 
Bitmap bmOutImg = Bitmap.createBitmap(bmInImg.getWidth(), bmInImg.getHeight(), Config.ARGB_8888);  
bmOutImg.setPixels(mCannyOutArray, 0, bmInImg.getWidth(), 0, 0, bmInImg.getWidth(), bmInImg.getHeight());   
imageview_2.setImageBitmap(bmOutImg);
2.4.8.

Result Some functions of opencv showing lining on imageerror on some specific scenerio

I am using opencv with android , for that I just try my code first on visual studio with opencv , it works fine on it and then I put it on android, but something is confusing in understanding function and their cause of error like in for example the simple program

    resize(image,image,image2.size());
    image.convertTo(image,CV_32FC4,1.0/255.0);
    image2.convertTo(image2,CV_32FC4,1.0/255.0);

    vector<Mat> channel; 
    split(image,channel);

    Mat mask = image.clone();            // clone function work fine
    //Mat mask = channel[3].clone();     // clone function show me error         

  //  channel.resize(3);  // show error

    Mat it;

    multiply(mask,channel[0],channel[0]);
    multiply(mask,channel[1],channel[1]);
    multiply(mask,channel[2],channel[2]);
    merge(channel,it);

When I use Mat mask = channel[3].clone(); It show me error of Method 'clone' could not be resolved but when I use Mat mask = image.clone(); it works fine. Why is that ?

Same when I use channel.resize(3); it show me error in resize function , error is Invalid arguments 'Candidates are: void resize(?, cv::Mat)'.

and when I move on to multiply function it show me error of Invalid arguments ' Candidates are: void multiply(const cv::_InputArray &, const cv::_InputArray &, const cv::_OutputArray&, double, int)' .

Though these all function are working in visual studio using opencv and they are also working in android when using on different scenario's .

I am working on native environment using eclipse with opencv android version of 2.4.8.

Some functions of opencv showing error on some specific scenerio

I am using opencv with android , for that I just try my code first on visual studio with opencv , it works fine on it and then I put it on android, but something is confusing in understanding function and their cause of error like in for example the simple program

    resize(image,image,image2.size());
    image.convertTo(image,CV_32FC4,1.0/255.0);
    image2.convertTo(image2,CV_32FC4,1.0/255.0);

    vector<Mat> channel; 
    split(image,channel);

    Mat mask = image.clone();            // clone function work fine
    //Mat mask = channel[3].clone();     // clone function show me error         

  //  channel.resize(3);  // show error

    Mat it;

    multiply(mask,channel[0],channel[0]);
    multiply(mask,channel[1],channel[1]);
    multiply(mask,channel[2],channel[2]);
    merge(channel,it);

When I use Mat mask = channel[3].clone(); It show me error of Method 'clone' could not be resolved but when I use Mat mask = image.clone(); it works fine. Why is that ?

Same when I use channel.resize(3); it show me error in resize function , error is Invalid arguments 'Candidates are: void resize(?, cv::Mat)'.

and when I move on to multiply function it show me error of Invalid arguments ' Candidates are: void multiply(const cv::_InputArray &, const cv::_InputArray &, const cv::_OutputArray&, double, int)' .

Though these all function are working in visual studio using opencv and they are also working in android when using on different scenario's .

I am working on native environment using eclipse with opencv android version of 2.4.8.

multiply and clone alternate work for me as i tried the code below , but don't know how to merge it

        Mat alpha1 = ch[3];
        Mat alpha =  alpha1.clone();

        Mat I1;
        vector<Mat> ch0 = ch[0];
        vector<Mat> ch1 = ch[1];
        vector<Mat> ch2 = ch[2];
//      I1 = alpha1.mul(ch0);
//      I1 = alpha1.mul(ch1);
//      I1 = alpha1.mul(ch2);
        multiply(alpha, ch0, ch0);
        multiply(alpha, ch1, ch1);
        multiply(alpha, ch2, ch2);
        merge(ch, I1);
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