您可能需要使用
CoordinateMapper.MapDepthFrameToColorSpace
找到所有深點的顏色空間座標。然後,將您的像素座標(x,y)與這些顏色空間座標進行比較。我的解決方案是找到最近的點(可能有更好的方法),因爲映射的座標是浮點數。
如果您使用C#,這裏是代碼。希望能幫助到你!
private ushort GetDepthValueFromPixelPoint(KinectSensor kinectSensor, ushort[] depthData, float PixelX, float PixelY)
{
ushort depthValue = 0;
if (null != depthData)
{
ColorSpacePoint[] depP = new ColorSpacePoint[512 * 424];
kinectSensor.CoordinateMapper.MapDepthFrameToColorSpace(_depthData, depP);
int depthIndex = FindClosestIndex(depP, PixelX, PixelY);
if (depthIndex < 0)
Console.WriteLine("-1");
else
{
depthValue = _depthData[depthIndex];
Console.WriteLine(depthValue);
}
}
return depthValue;
}
private int FindClosestIndex(ColorSpacePoint[] depP, float PixelX, float PixelY)
{
int depthIndex = -1;
float closestPoint = float.MaxValue;
for (int j = 0; j < depP.Length; ++j)
{
float dis = DistanceOfTwoPoints(depP[j], PixelX, PixelY);
if (dis < closestPoint)
{
closestPoint = dis;
depthIndex = j;
}
}
return depthIndex;
}
private float DistanceOfTwoPoints(ColorSpacePoint colorSpacePoint, float PixelX, float PixelY)
{
float x = colorSpacePoint.X - PixelX;
float y = colorSpacePoint.Y - PixelY;
return (float)Math.Sqrt(x * x + y * y);
}