KinEmote.StreamView.CalcHist C# (CSharp) Метод

        private unsafe void CalcHist(DepthMetaData depthMD)
        {
            // reset
            for (int i = 0; i < this.histogram.Length; ++i)
                this.histogram[i] = 0;

            ushort* pDepth = (ushort*)depthMD.DepthMapPtr.ToPointer();

            int points = 0;
            for (int y = 0; y < depthMD.YRes; ++y)
            {
                for (int x = 0; x < depthMD.XRes; ++x, ++pDepth)
                {
                    ushort depthVal = *pDepth;
                    if (depthVal != 0)
                    {
                        this.histogram[depthVal]++;
                        points++;
                    }
                }
            }

            for (int i = 1; i < this.histogram.Length; i++)
            {
                this.histogram[i] += this.histogram[i - 1];
            }

            if (points > 0)
            {
                for (int i = 1; i < this.histogram.Length; i++)
                {
                    this.histogram[i] = (int)(256 * (1.0f - (this.histogram[i] / (float)points)));
                }
            }
        }