private void GenerateBBox(ICollection <FaceInfo> boundingBoxCollection, Mat scores, Mat boxes, float scoreThreshold, int numAnchors)
{
using (var scoresChannel = scores.Channel(0))
using (var boxesChannel = boxes.Channel(0))
{
for (var i = 0; i < numAnchors; i++)
{
if (scoresChannel[i * 2 + 1] > scoreThreshold)
{
var rects = new FaceInfo();
var xCenter = boxesChannel[i * 4] * CenterVariance * this._Priors[i][2] + this._Priors[i][0];
var yCenter = boxesChannel[i * 4 + 1] * CenterVariance * this._Priors[i][3] + this._Priors[i][1];
var w = Math.Exp(boxesChannel[i * 4 + 2] * SizeVariance) * this._Priors[i][2];
var h = Math.Exp(boxesChannel[i * 4 + 3] * SizeVariance) * this._Priors[i][3];
rects.X1 = Clip(xCenter - w / 2.0, 1) * this._ImageW;
rects.Y1 = Clip(yCenter - h / 2.0, 1) * this._ImageH;
rects.X2 = Clip(xCenter + w / 2.0, 1) * this._ImageW;
rects.Y2 = Clip(yCenter + h / 2.0, 1) * this._ImageH;
rects.Score = Clip(scoresChannel[i * 2 + 1], 1);
boundingBoxCollection.Add(rects);
}
}
}
}
public static int CompareMat(Mat a, Mat b, float epsilon = 0.001f)
{
if (CheckMember(nameof(Mat.Dims), a.Dims, b.Dims) != 0)
{
return(-1);
}
if (CheckMember(nameof(Mat.W), a.W, b.W) != 0)
{
return(-1);
}
if (CheckMember(nameof(Mat.H), a.H, b.H) != 0)
{
return(-1);
}
if (CheckMember(nameof(Mat.C), a.C, b.C) != 0)
{
return(-1);
}
if (CheckMember(nameof(Mat.ElemSize), a.ElemSize, b.ElemSize) != 0)
{
return(-1);
}
if (CheckMember(nameof(Mat.ElemPack), a.ElemPack, b.ElemPack) != 0)
{
return(-1);
}
for (int q = 0, c = a.C; q < c; q++)
{
using (var ma = a.Channel(q))
using (var mb = b.Channel(q))
{
for (int i = 0, h = a.H; i < h; i++)
{
var pa = ma.Row(i);
var pb = mb.Row(i);
for (int j = 0, w = a.W; j < w; j++)
{
if (!FloatNearlyEqual(pa[j], pb[j], epsilon))
{
Console.Error.WriteLine($"value not match at {q} {i} {j} {pa[j]} {pb[j]}");
return(-1);
}
}
}
}
}
return(0);
}
