private void DrawDepthColorMatrix()
{
var minValue = GetMinValueFromBlockDistMat();
var maxValue = GetMaxValueFromBlockDistMat();
workImageBlockMatch.Lock();
for (int i = 0; i < workImageBlockMatch.Width; i++)
{
for (int j = 0; j < workImageBlockMatch.Height; j++)
{
var colorValue = (blockDistMatrix[i, j] * WHITE_COLOR_VALUE) / maxValue;
Color color = Color.FromArgb(colorValue, colorValue, colorValue);
if (blockDistMatrix[i, j] == minValue)
{
color = Color.White;
}
else if (blockDistMatrix[i, j] == maxValue)
{
color = Color.Black;
}
workImageBlockMatch.SetPixel(i, j, color);
}
}
panelDestination.BackgroundImage = null;
panelDestination.BackgroundImage = workImageBlockMatch.GetBitMap();
workImageBlockMatch.Unlock();
}
private void buttonGrayscale_Click(object sender, EventArgs e)
{
Color color;
workImage.Lock();
for (int i = 0; i < workImage.Width; i++)
{
for (int j = 0; j < workImage.Height; j++)
{
color = workImage.GetPixel(i, j);
byte R = color.R;
byte G = color.G;
byte B = color.B;
byte average = (byte)((R + G + B) / 3);
color = Color.FromArgb(average, average, average);
workImage.SetPixel(i, j, color);
}
}
panelDestination.BackgroundImage = null;
panelDestination.BackgroundImage = workImage.GetBitMap();
workImage.Unlock();
}
private void UpdateWorkImage()
{
panelDestination.BackgroundImage = null;
panelDestination.BackgroundImage = workImage.GetBitMap();
}
private void btnBlockMatch_Click(object sender, EventArgs e)
{
Color colorRef;
Color colorDest;
lineSize = Convert.ToInt32(textBoxLineSize.Text);
blockSize = Convert.ToInt32(textBoxBlockSize.Text);
var auxBitmap = workImageRight.GetBitMap();
// all image search
workImageLeft.Lock();
for (int i = 0; i < workImageLeft.Width; i += blockSize)
{
for (int j = 0; j < workImageLeft.Height; j += blockSize)
{
int sum_ref_R = 0;
int sum_ref_G = 0;
int sum_ref_B = 0;
var dest_sum_list = new List <ColorExtension>();
// block image search
if (i + blockSize < workImageLeft.Width && j + blockSize < workImageLeft.Height)
{
// calc the block sum from LEFT image with default size S=4
for (int m = i; m < i + blockSize; m++)
{
for (int n = j; n < j + blockSize; n++)
{
colorRef = workImageLeft.GetPixel(m, n);
sum_ref_R += colorRef.R;
sum_ref_G += colorRef.G;
sum_ref_B += colorRef.B;
}
}
// calc the sum from RIGHT image with sliding window D=16 default
if (i + lineSize < workImageRight.Width || j + lineSize < workImageRight.Height)
{
var ct = 0;
var nextM = i;
var nextN = j;
var max_count = lineSize / blockSize;
while (ct < max_count)
{
int sum_dest_R = 0;
int sum_dest_G = 0;
int sum_dest_B = 0;
for (int m = nextM; m < nextM + blockSize; m++)
{
for (int n = nextN; n < nextN + blockSize; n++)
{
colorDest = auxBitmap.GetPixel(nextM, nextN);
sum_dest_R += colorDest.R;
sum_dest_G += colorDest.G;
sum_dest_B += colorDest.B;
}
}
dest_sum_list.Add(new ColorExtension(sum_dest_R, sum_dest_G, sum_dest_B));
nextN++;
ct++;
}
}
// calc the sum of absolut diff (LEFT - RIGHT)
var minBlockSum = new ColorExtension(int.MaxValue, int.MaxValue, int.MaxValue);
foreach (var elem in dest_sum_list)
{
var diff_R = sum_ref_R - elem.R;
var diff_G = sum_ref_G - elem.G;
var diff_B = sum_ref_B - elem.B;
if (diff_R < minBlockSum.R && diff_G < minBlockSum.G && diff_B < minBlockSum.B)
{
minBlockSum = elem;
}
}
// get the index of the minimum block sum in order to set the color
var index = dest_sum_list.IndexOf(minBlockSum);
SetBlockDistMatrix(i, j, Math.Abs(index + 1));
}
}
}
workImageLeft.Unlock();
DrawDepthColorMatrix();
}