public bool validateFaceFrame(FaceFrame faceFrame)
{
// check if this matchFaceWithBody frame has valid matchFaceWithBody frame results
return ValidateFaceBoxAndPoints(faceFrame.FaceFrameResult);
}
private void RecordData(RectI faceRegion, FaceFrame faceFrame)
{
//record the R, G, B, IR values from the Face Region pixels
using (var irFrame = faceFrame.InfraredFrameReference.AcquireFrame())
{
using (var depthFrame = faceFrame.DepthFrameReference.AcquireFrame())
{
using (var colorFrame = faceFrame.ColorFrameReference.AcquireFrame())
{
if ((null == irFrame) || (null == colorFrame) || (null == depthFrame)) return;
DepthSpacePoint[] depthSpacePoints = new DepthSpacePoint[colorFrame.FrameDescription.Height * colorFrame.FrameDescription.Width];
FrameDescription depthFrameDescription = depthFrame.FrameDescription;
// Access the depth frame data directly via LockImageBuffer to avoid making a copy
using (KinectBuffer depthFrameData = depthFrame.LockImageBuffer())
{
this.m_CoordMapper.MapColorFrameToDepthSpaceUsingIntPtr(
depthFrameData.UnderlyingBuffer,
depthFrameData.Size,
depthSpacePoints);
}
//Get the pixels
m_colorBitmap.Lock();
unsafe
{
byte* pixels = (byte*)m_colorBitmap.BackBuffer;
var startPixel = faceRegion.Left * faceRegion.Top;
var endPixel = faceRegion.Right * faceRegion.Bottom;
float alpha = 0;
float red = 0;
float green = 0;
float blue = 0;
float ir = 0;
ushort[] irFrameData = new ushort[irFrame.FrameDescription.Height * irFrame.FrameDescription.Width];
irFrame.CopyFrameDataToArray(irFrameData);
//Now get the Red, Green, Blue Pixels for the region
for (int i = startPixel; i < endPixel; i += 4)
{
//var pixel = pixels[i];
int irIndex = (int)depthSpacePoints[i].X * (int)depthSpacePoints[i].Y;
blue += pixels[i]; // << 24;
green += pixels[i + 1]; // << 16;
red += pixels[i + 2];// << 8;
alpha += pixels[i + 3];
if (irIndex < irFrameData.Length)
ir += irFrameData[irIndex];
else
ir += 0;
}
float size = Math.Abs(startPixel - endPixel);
float avg_alpha = alpha / size;
float avg_red = red / size;
float avg_green = green / size;
float avg_blue = blue / size;
float avg_ir = ir / size;
double std_alpha = 0;
double std_red = 0;
double std_green = 0;
double std_blue = 0;
double std_ir = 0;
double var_alpha = 0;
double var_red = 0;
double var_green = 0;
double var_blue = 0;
double var_ir = 0;
//Now calculate standard deviation
for (int i = startPixel; i < endPixel; i += 4)
{
//var pixel = pixels[i];
var_blue = (double)(pixels[i] - avg_blue);
std_blue += Math.Pow(var_blue, 2.0);
var_green = (pixels[i + 1] - avg_green);
std_green += Math.Pow(var_green, 2);
var_red = (pixels[i + 2] - avg_red);
std_red += Math.Pow(var_red, 2);
var_alpha = (pixels[i + 3] - avg_alpha);
std_alpha += Math.Pow(var_alpha, 2);
int irIndex = (int)depthSpacePoints[i].X * (int)depthSpacePoints[i].Y;
if (irIndex < irFrameData.Length)
var_ir = irFrameData[irIndex] - avg_ir;
else
var_ir = avg_ir;
std_ir += Math.Pow(var_ir, 2);
}
std_alpha = Math.Sqrt(std_alpha / size);
std_red = Math.Sqrt(std_red / size);
std_green = Math.Sqrt(std_green / size);
std_blue = Math.Sqrt(std_blue / size);
std_ir = Math.Sqrt(std_ir / size);
double prime_alpha = 0;
double prime_red = 0;
double prime_green = 0;
double prime_blue = 0;
double prime_ir = 0;
//Now calculate standard deviation
for (int i = startPixel; i < endPixel; i += 4)
{
//var pixel = pixels[i];
var_blue = (double)(pixels[i] - avg_blue);
prime_blue += var_blue / std_blue;
var_green = (pixels[i + 1] - avg_green);
prime_green += var_green / std_green;
var_red = (pixels[i + 2] - avg_red);
prime_red += var_red / std_red;
var_alpha = (pixels[i + 3] - avg_alpha);
prime_alpha += var_alpha / std_alpha;
int irIndex = (int)depthSpacePoints[i].X * (int)depthSpacePoints[i].Y;
if (irIndex < irFrameData.Length)
var_ir = irFrameData[irIndex] - avg_ir;
else
var_ir = avg_ir;
prime_ir += var_ir / std_ir;
}
double norm_alpha = prime_alpha / size;
double norm_red = prime_red / size;
double norm_blue = prime_blue / size;
double norm_green = prime_green / size;
double norm_ir = prime_ir / size;
Plot(norm_red, norm_green, norm_blue, norm_ir);
jadeCalculation.Write(
m_secondsElapsed.ElapsedMilliseconds,
norm_alpha, norm_red, norm_green, norm_blue, norm_ir);
}
m_colorBitmap.Unlock();
}
}
}
}
