-
- let min = ref 0.0
- let minLocation = ref <| Point()
- let max = ref 0.0
- let maxLocation = ref <| Point()
- mat.MinMax(min, max, minLocation, maxLocation)
-
- let mutable bgValue = !max - (!max - !min) / 4.0
- let mutable fgValue = !min + (!max - !min) / 4.0
- let mutable d_bg = new Matrix<float32>(mat.Size)
- let mutable d_fg = new Matrix<float32>(mat.Size)
-
- for i in 1..3 do
- CvInvoke.Pow(mat - bgValue, 2.0, d_bg)
- CvInvoke.Pow(mat - fgValue, 2.0, d_fg)
- let fg = (d_fg * fgFactor).Cmp(d_bg, CvEnum.CmpType.LessThan)
-
- printfn "test"
-
-
- (*d_bg = (imgFloat - color_bg) .^ 2.0;
- d_fg = (imgFloat - color_fg) .^ 2.0;
- fg = d_fg * Background_weight < d_bg;
- imgFilteredFg = imgFloat;
- imgFilteredFg(~fg) = nan;
- color_fg = median(reshape(imgFilteredFg, [], 1), 'omitnan');
- imgFilteredBg = imgFloat;
- imgFilteredBg(fg) = nan;
- color_bg = median(reshape(imgFilteredBg, [], 1), 'omitnan');
- *)
-
-
- new Matrix<byte>(mat.Size)
+ let w = img.Width
+ let h = img.Height
+
+ let min = ref [| 0.0 |]
+ let minLocation = ref <| [| Point() |]
+ let max = ref [| 0.0 |]
+ let maxLocation = ref <| [| Point() |]
+ img.MinMax(min, max, minLocation, maxLocation)
+
+ let mutable median_bg = (!max).[0] - ((!max).[0] - (!min).[0]) / 4.0
+ let mutable median_fg = (!min).[0] + ((!max).[0] - (!min).[0]) / 4.0
+ let mutable d_bg = new Image<Gray, float32>(img.Size)
+ let mutable d_fg = new Image<Gray, float32>(img.Size)
+ let mutable fg = new Image<Gray, byte>(img.Size)
+
+ for i in 1..nbIteration do
+ CvInvoke.Pow(img - median_bg, 2.0, d_bg)
+ CvInvoke.Pow(img - median_fg, 2.0, d_fg)
+ fg <- (d_fg * fgFactor).Cmp(d_bg, CvEnum.CmpType.LessThan)
+
+ median_fg <- MathNet.Numerics.Statistics.Statistics.Median(seq {
+ for i in 0 .. h - 1 do
+ for j in 0 .. w - 1 do
+ if fg.Data.[i, j, 0] > 0uy then yield img.Data.[i, j, 0] |> float })
+
+ median_bg <- MathNet.Numerics.Statistics.Statistics.Median(seq {
+ for i in 0 .. h - 1 do
+ for j in 0 .. w - 1 do
+ if fg.Data.[i, j, 0] = 0uy then yield img.Data.[i, j, 0] |> float })
+
+ CvInvoke.Sqrt(d_fg, d_fg)
+
+ { fg = fg; median_bg = median_bg; median_fg = median_fg; d_fg = d_fg }