// Get array of objects images
internal Blob[] GetObjectsWithArray(ZagImage <byte> SourceImage)
{
byte[] src = SourceImage.Data;
int width = SourceImage.Width;
int height = SourceImage.Height;
// process the image
ProcessImage(src, width, height);
int[] labels = ObjectLabels;
int count = ObjectsCount;
// image size
int i = 0, label;
// --- STEP 1 - find each objects coordinates
// create object coordinates arrays
int[] x1 = new int[count + 1];
int[] y1 = new int[count + 1];
int[] x2 = new int[count + 1];
int[] y2 = new int[count + 1];
for (int k = 1; k <= count; k++)
{
x1[k] = width;
y1[k] = height;
}
// walk through labels array
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++, i++)
{
// get current label
label = labels[i];
// skip unlabeled pixels
if (label == 0)
{
continue;
}
// check and update all coordinates
if (x < x1[label])
{
x1[label] = x;
}
if (x > x2[label])
{
x2[label] = x;
}
if (y < y1[label])
{
y1[label] = y;
}
if (y > y2[label])
{
y2[label] = y;
}
}
}
// --- STEP 2 - get each object
Blob[] objects = new Blob[count];
// create each array
for (int k = 1; k <= count; k++)
{
int xmin = x1[k];
int xmax = x2[k];
int ymin = y1[k];
int ymax = y2[k];
int objectWidth = xmax - xmin + 1;
int objectHeight = ymax - ymin + 1;
bool[,] array = new bool[objectWidth, objectHeight];
int p = ymin * width + xmin;
int labelsOffset = width - objectWidth;
// for each line
for (int y = ymin; y <= ymax; y++)
{
// copy each pixel
for (int x = xmin; x <= xmax; x++, p++)
{
if (labels[p] == k)
{
array[x - xmin, y - ymin] = true;
}
else
{
array[x - xmin, y - ymin] = false;
}
}
p += labelsOffset;
}
objects[k - 1] = new Blob(array, xmin, ymin, objectWidth, objectHeight);
}
return(objects);
}
internal Blob[] GetObjectsWithoutArray(ZagImage <byte> SourceImage)
{
byte[] src = SourceImage.Data;
int width = SourceImage.Width;
int height = SourceImage.Height;
// process the image
ProcessImage(src, width, height);
int[] labels = ObjectLabels;
int count = ObjectsCount;
int i = 0, label;
// --- STEP 1 - find each objects coordinates
// create object coordinates arrays
int[] x1 = new int[count + 1];
int[] y1 = new int[count + 1];
int[] x2 = new int[count + 1];
int[] y2 = new int[count + 1];
//For Area
int[] area = new int[count + 1];
//For Center of Gravity
long[] xc = new long[count + 1];
long[] yc = new long[count + 1];
for (int k = 1; k <= count; k++)
{
x1[k] = width;
y1[k] = height;
}
// walk through labels array
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++, i++)
{
// get current label
label = labels[i];
// skip unlabeled pixels
if (label == 0)
{
continue;
}
// check and update all coordinates
if (x < x1[label])
{
x1[label] = x;
}
if (x > x2[label])
{
x2[label] = x;
}
if (y < y1[label])
{
y1[label] = y;
}
if (y > y2[label])
{
y2[label] = y;
}
area[label]++;
xc[label] += x;
yc[label] += y;
}
}
// --- STEP 2 - get each object
Blob[] objects = new Blob[count];
// create each array
for (int k = 1; k <= count; k++)
{
int xmin = x1[k];
int xmax = x2[k];
int ymin = y1[k];
int ymax = y2[k];
int objectWidth = xmax - xmin + 1;
int objectHeight = ymax - ymin + 1;
objects[k - 1] = new Blob(xmin, ymin, objectWidth, objectHeight);
objects[k - 1].CenterOfGravityX = xc[k] / (float)area[k];
objects[k - 1].CenterOfGravityY = yc[k] / (float)area[k];
objects[k - 1].Area = area[k];
}
return(objects);
}
