Opencv import highgui in android studio is showing error.Cannot resolve(I added the library still the error remain)

Question

I have the following code which is for image segmentation using grabcut opencv. I am using opencv for the first time. I added the opencv library. While others worked perfectly highgui is still showing cannot resolve symbol.Do i need to add something else. (If you can help me with the code too, will be an additional help) Here is the code: Edit : I have posted the updated code:

       package com.example.android.seg;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;


import java.io.IOException;

import org.opencv.android.OpenCVLoader;
import org.opencv.android.Utils;
import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Point;
import org.opencv.core.Rect;
import org.opencv.core.Scalar;
import org.opencv.imgproc.Imgproc;
import org.opencv.core.*;
import org.opencv.imgcodecs.Imgcodecs; // imread, imwrite, etc
   // VideoCapture

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.ImageView;
import android.widget.Toast;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;


public class seg extends Activity implements OnTouchListener {
    static{
        if (!OpenCVLoader.initDebug()) {
            Log.i("TEST", "Cannot connect to OpenCV Manager");
            // Handle initialization error
        }
        else {
            Log.i("TEST", "Connected to OpenCV Manager");
        }
    }
    ImageView imageView;
    Bitmap bitmap;
    Canvas canvas;
    Scalar color = new Scalar(255, 0, 0, 255);
    Point tl, br;
    int counter;
    Bitmap bitmapResult, bitmapBackground;
    Mat dst = new Mat();
    //"sdcard/DCIM/wall.jpg"
    final String pathToImage  = "wall.jpg";

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_seg);
        imageView = (ImageView) this.findViewById(R.id.imageView);

        bitmap = BitmapFactory.decodeFile(pathToImage);
        Toast msg = Toast.makeText(seg.this, "Press top left and bottom right of the      foreground image", Toast.LENGTH_LONG);

        msg.setGravity(Gravity.TOP|Gravity.LEFT, 0, 0);

        msg.show();
        bitmapResult = bitmap.copy(bitmap.getConfig(), true);
        canvas = new Canvas(bitmapResult);

        imageView.setImageBitmap(bitmapResult);
        imageView.setOnTouchListener(this);

        tl = new Point();
        br = new Point();
        counter = 0;
    }

    //@Override
    public boolean onTouch(View v, MotionEvent event) {

        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            if (counter == 0) {
                tl.x = event.getX();
                tl.y = event.getY();
                counter++;
            } else if (counter == 1) {
                br.x = event.getX();
                br.y = event.getY();
                counter++;

                Mat img = new Mat();
                //val mat = Imgcodecs.imread(pathToImage)
                img = Imgcodecs.imread(pathToImage);
                Mat background = new Mat();
                try {
                    background = Utils.loadResource(getApplicationContext(),
                            R.drawable.wall );
                } catch (IOException e) {

                    e.printStackTrace();
                }

                backgroundSubtracting(img, background);
                Imgcodecs.imwrite("wall.jpg", dst);
                //Highgui.imwrite("/mnt/sdcard/GRABCUT/rect.png", dst);
                Bitmap jpg = BitmapFactory
                        .decodeFile("wall.jpg");

                imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
                imageView.setAdjustViewBounds(true);
                imageView.setPadding(2, 2, 2, 2);
                imageView.setImageBitmap(jpg);
                imageView.invalidate();
            }
        }

        return true;
    }

    private void backgroundSubtracting(Mat img, Mat background) {

        Mat firstMask = new Mat();
        Mat bgModel = new Mat();
        Mat fgModel = new Mat();
        Mat mask;
        Mat source = new Mat(1, 1, CvType.CV_8U, new Scalar(3.0));
        dst = new Mat();
        Rect rect = new Rect(tl, br);

        Imgproc.grabCut(img, firstMask, rect, bgModel, fgModel, 1, 0 /* GC_INIT_WITH_RECT */);
        Core.compare(firstMask, source/* GC_PR_FGD */, firstMask, Core.CMP_EQ);

        Mat foreground = new Mat(img.size(), CvType.CV_8UC3, new Scalar(255,
                255, 255));
        img.copyTo(foreground, firstMask);
        Imgproc.rectangle(img, tl, br, color);
        //Core.rectangle(img, tl, br, color);

        Mat tmp = new Mat();
        Imgproc.resize(background, tmp, img.size());
        background = tmp;
        mask = new Mat(foreground.size(), CvType.CV_8UC1, new Scalar(255, 255, 255));

        Imgproc.cvtColor(foreground, mask, 6/* COLOR_BGR2GRAY */);
        Imgproc.threshold(mask, mask, 254, 255, 1 /* THRESH_BINARY_INV */);

        Mat vals = new Mat(1, 1, CvType.CV_8UC3, new Scalar(0.0));
        background.copyTo(dst);

        background.setTo(vals, mask);
        Core.add(background, foreground, dst, mask);

        firstMask.release();
        source.release();
        bgModel.release();
        fgModel.release();
        vals.release();
    }

}

here is my logcat:

  05-20 09:48:51.830  24423-24423/com.example.android.seg D/dalvikvm﹕ Late-enabling CheckJNI
05-20 09:48:51.832  24423-24429/com.example.android.seg D/dalvikvm﹕ threadid=2: interp stack at 0x40000000
05-20 09:48:51.840  24423-24431/com.example.android.seg D/dalvikvm﹕ threadid=3: interp stack at 0x40008000
05-20 09:48:51.840  24423-24423/com.example.android.seg D/jdwp﹕ prepping for JDWP over ADB
05-20 09:48:51.840  24423-24423/com.example.android.seg D/jdwp﹕ ADB transport startup
05-20 09:48:51.841  24423-24432/com.example.android.seg D/dalvikvm﹕ threadid=4: interp stack at 0x49247000
05-20 09:48:51.841  24423-24432/com.example.android.seg D/jdwp﹕ JDWP: thread running
05-20 09:48:51.841  24423-24432/com.example.android.seg D/jdwp﹕ acceptConnection
05-20 09:48:51.842  24423-24432/com.example.android.seg D/jdwp﹕ trying to receive file descriptor from ADB
05-20 09:48:51.842  24423-24433/com.example.android.seg D/dalvikvm﹕ threadid=5: interp stack at 0x4bd75000
05-20 09:48:51.851  24423-24432/com.example.android.seg D/jdwp﹕ received file descriptor 40 from ADB
05-20 09:48:51.853  24423-24435/com.example.android.seg D/dalvikvm﹕ threadid=6: interp stack at 0x4bd7d000
05-20 09:48:51.854  24423-24435/com.example.android.seg D/dalvikvm﹕ threadid=6: calling run()
05-20 09:48:51.855  24423-24432/com.example.android.seg D/jdwp﹕ processIncoming
05-20 09:48:51.855  24423-24432/com.example.android.seg D/jdwp﹕ processIncoming
05-20 09:48:51.855  24423-24432/com.example.android.seg D/jdwp﹕ handlePacket : cmd=0x1, cmdSet=0xC7, len=0x13, id=0x40000044, flags=0x0, dataLen=0x8
05-20 09:48:51.856  24423-24432/com.example.android.seg D/jdwp﹕ REQ: DDM.Chunk (cmd=199/1 dataLen=8 id=0x40000044)
05-20 09:48:51.857  24423-24432/com.example.android.seg D/jdwp﹕ reply: dataLen=9 err=NONE(0)
05-20 09:48:51.857  24423-24432/com.example.android.seg D/jdwp﹕ processIncoming
05-20 09:48:51.857  24423-24432/com.example.android.seg D/jdwp﹕ handlePacket : cmd=0x1, cmdSet=0xC7, len=0x17, id=0x40000045, flags=0x0, dataLen=0xC
05-20 09:48:51.857  24423-24432/com.example.android.seg D/jdwp﹕ REQ: DDM.Chunk (cmd=199/1 dataLen=12 id=0x40000045)
05-20 09:48:51.859  24423-24432/com.example.android.seg D/jdwp﹕ reply: dataLen=50 err=NONE(0)
05-20 09:48:51.860  24423-24432/com.example.android.seg D/jdwp﹕ processIncoming
05-20 09:48:51.860  24423-24432/com.example.android.seg D/jdwp﹕ handlePacket : cmd=0x1, cmdSet=0xC7, len=0x13, id=0x40000046, flags=0x0, dataLen=0x8
05-20 09:48:51.860  24423-24432/com.example.android.seg D/jdwp﹕ REQ: DDM.Chunk (cmd=199/1 dataLen=8 id=0x40000046)
05-20 09:48:51.862  24423-24432/com.example.android.seg D/jdwp﹕ reply: dataLen=216 err=NONE(0)
05-20 09:48:51.862  24423-24432/com.example.android.seg D/jdwp﹕ processIncoming
05-20 09:48:51.862  24423-24432/com.example.android.seg D/jdwp﹕ handlePacket : cmd=0x1, cmdSet=0xC7, len=0x13, id=0x40000047, flags=0x0, dataLen=0x8
05-20 09:48:51.863  24423-24432/com.example.android.seg D/jdwp﹕ REQ: DDM.Chunk (cmd=199/1 dataLen=8 id=0x40000047)
05-20 09:48:51.863  24423-24432/com.example.android.seg D/jdwp﹕ reply: dataLen=9 err=NONE(0)
05-20 09:48:51.863  24423-24432/com.example.android.seg D/jdwp﹕ processIncoming
05-20 09:48:51.863  24423-24432/com.example.android.seg D/jdwp﹕ handlePacket : cmd=0x1, cmdSet=0xC7, len=0x14, id=0x40000048, flags=0x0, dataLen=0x9
05-20 09:48:51.863  24423-24432/com.example.android.seg D/jdwp﹕ REQ: DDM.Chunk (cmd=199/1 dataLen=9 id=0x40000048)
05-20 09:48:51.863  24423-24432/com.example.android.seg D/jdwp﹕ reply: dataLen=0 err=NONE(0)
05-20 09:48:51.863  24423-24436/com.example.android.seg D/dalvikvm﹕ threadid=7: interp stack at 0x4bd85000
05-20 09:48:51.864  24423-24436/com.example.android.seg D/dalvikvm﹕ threadid=7: calling run()
05-20 09:48:51.872  24423-24437/com.example.android.seg D/dalvikvm﹕ threadid=8: interp stack at 0x4bd8d000
05-20 09:48:51.873  24423-24437/com.example.android.seg D/dalvikvm﹕ threadid=8: calling run()
05-20 09:48:52.050  24423-24439/com.example.android.seg D/dalvikvm﹕ threadid=9: interp stack at 0x4bd95000
05-20 09:48:52.052  24423-24440/com.example.android.seg D/dalvikvm﹕ threadid=10: interp stack at 0x4bd9d000
05-20 09:48:52.064  24423-24423/com.example.android.seg D/jdwp﹕ sendBufferedRequest : len=0x39
05-20 09:48:52.918  24423-24423/com.example.android.seg D/jdwp﹕ sendBufferedRequest : len=0x45
05-20 09:48:53.289  24423-24423/com.example.android.seg D/ActivityThread﹕ BIND_APPLICATION handled : 0 / AppBindData{appInfo=ApplicationInfo{41615870 com.example.android.seg}}
05-20 09:48:53.296  24423-24423/com.example.android.seg D/OpenCV/StaticHelper﹕ Trying to get library list
05-20 09:48:53.296  24423-24423/com.example.android.seg D/dalvikvm﹕ Trying to load lib /mnt/asec/com.example.android.seg-2/lib/libopencv_info.so 0x41618e00
05-20 09:48:53.297  24423-24423/com.example.android.seg A/libc﹕ Fatal signal 7 (SIGBUS) at 0x4bf6d9b8 (code=2)

Exception · Accepted Answer · 2015-05-18T11:47:50.170

26

In opencv3.0, there is no more highgui module in java.

the functionality was split up into new videoio and imgcodecs (that's where you will find imread) modules.

import org.opencv.core.*;
import org.opencv.imgcodecs; // imread, imwrite, etc
import org.opencv.videoio;   // VideoCapture

EDIT: Change img=Highgui.imread(pathtoimage); to img = Imgcodecs.imread(pathtoimage);

and Core.rectangle(img, tl, br, color); to Imgproc.rectangle(img, t1, br, color);

I will also suggest go through OpenCV 3.0 modules to resolve these errors.

edited May 18 '15 at 11:47

answered May 18 '15 at 07:03

Exception

2,273
1
24
42

Comments are not for extended discussion; this conversation has been [moved to chat](http://chat.stackoverflow.com/rooms/78309/discussion-on-answer-by-exception-opencv-import-highgui-in-android-studio-is-sho). – Taryn May 20 '15 at 11:23
Exception or can someone help me in this matter, I really need to do this. https://stackoverflow.com/questions/61876457/image-segmentation-using-segment-seeds-watershed-in-android – Tecnologia da Net May 18 '20 at 19:45

score 3 · Answer 2 · answered Aug 02 '16 at 22:02

3

Depending on the file structure it may instead be:

import org.opencv.imgcodecs.Imgcodecs;

answered Aug 02 '16 at 22:02

user6622581

31
3

Isira Yapa · Answer 3 · 2018-11-14T06:02:57.187

0

There is no Highgui module in OpenCV 3.0+ instead you can use the same Imgcodecs module

The old one

Highgui.imread(fileName, Highgui.CV_LOAD_IMAGE_GRAYSCALE)
Highgui.imread(fileName)

The New one

Imgcodecs.imread(fileName, Imgcodecs.CV_LOAD_IMAGE_GRAYSCALE)
Imgcodecs.imread(fileName)

edited Nov 14 '18 at 06:02

answered Nov 14 '18 at 05:56

Isira Yapa

1
2

Opencv import highgui in android studio is showing error.Cannot resolve(I added the library still the error remain)

3 Answers3

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