public TensorBitmap(SpanTensor3 <T> tensor, ColorEncoding encoding)
{
_ChannelX = tensor.Dimensions[0] > 0 ? tensor[0].Span : default;
_ChannelY = tensor.Dimensions[0] > 1 ? tensor[1].Span : default;
_ChannelZ = tensor.Dimensions[0] > 2 ? tensor[2].Span : default;
_ChannelW = tensor.Dimensions[0] > 3 ? tensor[3].Span : default;
_Channels = tensor.Dimensions[0];
_Width = tensor.Dimensions[2];
_Height = tensor.Dimensions[1];
_Encoding = encoding;
}
public void CopyImage(SpanBitmap src, SpanTensor3 <float> dst)
{
switch (src.PixelFormat.Code)
{
case Pixel.BGR24.Code: CopyImage(src.OfType <Pixel.BGR24>(), dst); return;
case Pixel.RGB24.Code: CopyImage(src.OfType <Pixel.RGB24>(), dst); return;
case Pixel.BGRA32.Code: CopyImage(src.OfType <Pixel.BGRA32>(), dst); return;
case Pixel.RGBA32.Code: CopyImage(src.OfType <Pixel.RGBA32>(), dst); return;
case Pixel.Undefined24.Code: CopyImage(src.OfType <Pixel.Undefined24>(), dst); return;
}
throw new NotImplementedException($"{src.PixelFormat}");
}
public void CopyImage <TSrcPixel>(SpanBitmap <TSrcPixel> src, SpanTensor3 <float> dst)
where TSrcPixel : unmanaged, Pixel.IReflection
{
var dstEncoding = _TensorsExtensions.GetColorEncoding <TPixel>();
var cmad = ColorTransform;
if (default(TSrcPixel).IsQuantized)
{
cmad = cmad.ConcatMul(1f / 255f);
}
var sampler = src.AsBitmapSampler();
if (dst.Dimensions[2] == 3) // dst[h][w][3]
{
var tmpTensor = dst.UpCast <System.Numerics.Vector3>();
tmpTensor.AsTensorBitmap(dstEncoding).FitPixels(sampler, cmad);
return;
}
if (dst.Dimensions[2] == 4) // dst[h][w][4]
{
var tmpTensor = dst.UpCast <System.Numerics.Vector4>();
tmpTensor.AsTensorBitmap(dstEncoding).FitPixels(sampler, cmad);
return;
}
if (dst.Dimensions[0] == 3) // dst[3][h][w]
{
dst.AsBitmapSampler(dstEncoding).FitPixels(sampler, cmad);
return;
}
throw new NotImplementedException();
}
// https://github.com/atksh/onnx-facial-lmk-detector
public static FullStackFaceInfo[] Parse(SpanTensor1 <float> scores, SpanTensor2 <Int64> bboxes, SpanTensor3 <Pixel.BGR24> align_imgs, SpanTensor3 <Int64> lmks)
{
var result = new FullStackFaceInfo[scores.Dimensions[0]];
for (int i = 0; i < scores.Dimensions[0]; ++i)
{
result[i].Score = scores[i];
var bbox = bboxes[i];
result[i].BoundingBox = new System.Drawing.Rectangle((int)bbox[0], (int)bbox[1], (int)bbox[2], (int)bbox[3]);
MemoryBitmap <Pixel.BGR24> bmp = default;
align_imgs[i].AsTensorBitmap(Tensors.Imaging.ColorEncoding.RGB).CopyTo(ref bmp);
result[i].AlignedImage = bmp;
var lmarks = lmks[i].ToArray();
}
return(result);
}
void ITensorImageProcessor <float> .CopyImage(SpanTensor3 <float> src, SpanBitmap dst)
{
throw new NotImplementedException();
}
public static SpanTensor3 <float> SetImage(this SpanTensor3 <float> dst, SpanBitmap src, ITensorImageProcessor <float> options)
{
options.CopyImage(src, dst);
return(dst);
}