Exemple #1
0
bool isDiscontinuous(const BoolArray &image, const ICoord pt) {
    //This function checks to see if a point is discontinuous. It does
    //so by checking the pixels surrounding the current pixel.

    if(image[pt]==0 || pt(0)==0 || pt(0)==image.width()-1 || pt(1)==0 || pt(1)==image.height()-1)
        return false;
    int p1=image[ICoord(pt(0)-1,pt(1)+1)];
    int p2=image[ICoord(pt(0),pt(1)+1)];
    int p3=image[ICoord(pt(0)+1,pt(1)+1)];
    int p4=image[ICoord(pt(0)-1,pt(1))];
    int p6=image[ICoord(pt(0)+1,pt(1))];
    int p7=image[ICoord(pt(0)-1,pt(1)-1)];
    int p8=image[ICoord(pt(0),pt(1)-1)];
    int p9=image[ICoord(pt(0)+1,pt(1)-1)];


    int numNonZero=0;

    for(int a=-1; a<=1; a++)
        for(int b=-1; b<=1; b++)
            numNonZero+=image[pt+ICoord(a,b)];
    if(numNonZero==1 || numNonZero==2)
        return true;

    int compVal=p1 + 2*p2 + 4*p3 + 8*p4 + 16*p6 + 32*p7 + 64*p8 + 128*p9;
    if(compVal==3 || compVal==6 || compVal==96 || compVal==192 || compVal==20
            || compVal==9 || compVal==40 || compVal==144)
        return true;
    return false;

    //  //3 pixel cases  *** CHECK may not be necessary
    //top left
    /*  if ((p1==1) && (p3==0) && (p4==0) && (p6==0) && (p7==0) && (p8==0) && (p9==0) && (p2==1))
        return true;
      //top right
      if ((p1==0) && (p3==1) && (p4==0) && (p6==0) && (p7==0) && (p8==0) && (p9==0) && (p2==1))
        return true;
      //bottom left
      if ((p1==0) && (p3==0) && (p4==0) && (p6==0) && (p7==1) && (p8==1) && (p9==0) && (p2==0))
        return true;
      //bottom right
      if ((p1==0) && (p3==0) && (p4==0) && (p6==0) && (p7==0) && (p8==1) && (p9==1) && (p2==0))
        return true;
      //right top
      if ((p1==0) && (p3==1) && (p4==0) && (p6==1) && (p7==0) && (p8==0) && (p9==0) && (p2==0))
        return true;
      //left top
      if ((p1==1) && (p3==0) && (p4==1) && (p6==0) && (p7==0) && (p8==0) && (p9==0) && (p2==0))
        return true;
      //left bottom
      if ((p1==0) && (p3==0) && (p4==1) && (p6==0) && (p7==1) && (p8==0) && (p9==0) && (p2==0))
        return true;
      //left bottom
      if ((p1==0) && (p3==0) && (p4==0) && (p6==1) && (p7==0) && (p8==0) && (p9==1) && (p2==0))
      return true;*/
}
Exemple #2
0
void removeNoisePoints(double tol, BoolArray & image, DoubleArray minMaxRatio) {
    int w=image.width();
    int h=image.height();
    for (int a=0; a<w; a++) {
        for (int b=0; b<h; b++) {
            if ( (image[ICoord(a,b)]==1) && (minMaxRatio[ICoord(a,b)]>tol)) {
                //	std::cout<<"Noise removed at "<<a<<" "<<h-1-b<<std::endl;
                image[ICoord(a,b)]=0;
            }
        }
    }
}
Exemple #3
0
BoolArray removeDeadLines(const BoolArray & connected) {
    BoolArray temp=connected.clone();
    int numRemoved=-1;
    while (numRemoved!=0) {
        numRemoved=0;
        for (int a = 1; a < connected.width()-1; a++) {
            for (int b = 1; b < connected.height()-1; b++) {
                if ( (temp[ICoord(a,b)]==1) && isDiscontinuous(temp,ICoord(a,b))) {
                    temp[ICoord(a,b)]=0;
                    numRemoved++;
                }
            }
        }
    }

    return temp;
}
Exemple #4
0
bool isBroken(const BoolArray &image,ICoord pt) {
    // Is there a single pixel gap in a line at the given point?
    if (image[pt] || pt(0)==0 || pt(0)==image.width()-1 || pt(1)==0 || pt(1)==image.height()-1)
        return false;

    int p1=image[ICoord(pt(0)-1,pt(1)+1)];
    int p2=image[ICoord(pt(0),pt(1)+1)];
    int p3=image[ICoord(pt(0)+1,pt(1)+1)];
    int p4=image[ICoord(pt(0)-1,pt(1))];
    int p6=image[ICoord(pt(0)+1,pt(1))];
    int p7=image[ICoord(pt(0)-1,pt(1)-1)];
    int p8=image[ICoord(pt(0),pt(1)-1)];
    int p9=image[ICoord(pt(0)+1,pt(1)-1)];

    int compNum=p1 + 2*p2 + 4*p3 + 8*p4 + 16*p6 + 32*p7 + 64*p8 + 128*p9;
    /*  if (
          ((p1==0) && (p2==0) && (p3==1) && (p4==0) && (p6==0) && (p7==1) && (p8==0) && (p9==0))
          || ((p1==1) && (p2==0) && (p3==0) && (p4==0) && (p6==0) && (p7==0) && (p8==0) && (p9==1))
          || ((p1==0) && (p2==0) && (p3==0) && (p4==1) && (p6==1) && (p7==0) && (p8==0) && (p9==0))
          || ((p1==0) && (p2==1) && (p3==0) && (p4==0) && (p6==0) && (p7==0) && (p8==1) && (p9==0))
          || ((p1==0) && (p2==0) && (p3==1) && (p4==0) && (p6==0) && (p7==0) && (p8==1) && (p9==0))
          || ((p1==1) && (p2==0) && (p3==0) && (p4==0) && (p6==0) && (p7==0) && (p8==1) && (p9==0))
          || ((p1==0) && (p2==0) && (p3==0) && (p4==1) && (p6==0) && (p7==0) && (p8==0) && (p9==1))
          || ((p1==0) && (p2==0) && (p3==1) && (p4==1) && (p6==0) && (p7==0) && (p8==0) && (p9==0))
          || ((p1==1) && (p2==0) && (p3==0) && (p4==0) && (p6==1) && (p7==0) && (p8==0) && (p9==0))
          || ((p1==0) && (p2==1) && (p3==0) && (p4==0) && (p6==0) && (p7==1) && (p8==0) && (p9==0))
          || ((p1==0) && (p2==1) && (p3==0) && (p4==0) && (p6==0) && (p7==0) && (p8==0) && (p9==1))
          || ((p1==0) && (p2==0) && (p3==0) && (p4==0) && (p6==1) && (p7==1) && (p8==0) && (p9==0))
          )*/
    if(compNum==36 || compNum==129 || compNum==24 || compNum==66 || compNum==68
            || compNum==65 || compNum==136 || compNum==12 || compNum==17 || compNum==34
            || compNum==130 || compNum==48)
        return true;

    return false;
}