+module ParasitesMarker2
+
+open System.Drawing
+
+open Emgu.CV
+open Emgu.CV.Structure
+
+type Result = {
+ darkStain: Image<Gray, byte>
+ stain: Image<Gray, byte>
+ infection: Image<Gray, byte> }
+
+// Create three binary markers :
+// * 'Dark stain' corresponds to the colored pixel, it's independent of the size of the areas.
+// * 'Stain' corresponds to the stain around the parasites.
+// * 'Infection' corresponds to the parasite. It shouldn't contain thrombocytes.
+let find (filteredGreen: Image<Gray, byte>) (filteredGreenFloat: Image<Gray, float32>) (kmediansResult: KMedians.Result) (config: Config.Config) : Result * Image<Gray, byte> * Image<Gray, byte> =
+
+ // We use the filtered image to find the dark stain.
+ let { KMedians.fg = fg; KMedians.median_bg = median_bg; KMedians.median_fg = median_fg; KMedians.d_fg = d_fg } = kmediansResult
+ let darkStain = d_fg.Cmp(median_bg * config.Parameters.darkStainLevel, CvEnum.CmpType.GreaterThan)
+ darkStain._And(filteredGreenFloat.Cmp(median_fg, CvEnum.CmpType.LessThan))
+
+ let marker (area: int) (threshold: float) : Image<Gray, byte> * Image<Gray, byte> =
+ let closed = filteredGreen.Copy()
+ ImgTools.areaClose closed area
+ let diff = closed - filteredGreen
+
+ let min = ref [| 0. |]
+ let minLocation = ref <| [| Point() |]
+ let max = ref [| 0. |]
+ let maxLocation = ref <| [| Point() |]
+ diff.MinMax(min, max, minLocation, maxLocation)
+
+ diff._ThresholdBinary((!max).[0] * threshold |> Gray, Gray(255.))
+ diff, closed
+
+ let parasitesMarker, filteredGreenWithoutParasites = marker (int config.ParasiteArea) config.Parameters.infectionLevel
+ let stainMarker, filteredGreenWithoutStain = marker (int config.StainArea) config.Parameters.stainLevel
+
+ { darkStain = darkStain
+ stain = parasitesMarker
+ infection = stainMarker },
+ filteredGreenWithoutParasites,
+ filteredGreenWithoutStain
+
+
+
+
+