epiphany27

    float getFrequency() {
      Mat I = imread(filename, CV_LOAD_IMAGE_GRAYSCALE);
      if( I.empty())
          return -1;
  
      Mat padded;                            //expand input image to optimal size
      int m = getOptimalDFTSize( I.rows );
      int n = getOptimalDFTSize( I.cols ); // on the border add zero values
      copyMakeBorder(I, padded, 0, m - I.rows, 0, n - I.cols, BORDER_CONSTANT, Scalar::all(0));

epiphany27

package com.myzoomproject.views;

import com.myzoomproject.activities.*;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;