dg1an3

using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;

// width/height helpers
static int Width<TPixel>(this TPixel[,] pixels) => pixels.GetLength(0);
static int Height<TPixel>(this TPixel[,] pixels) => pixels.GetLength(1);

// range helper

dg1an3

    /// <summary>
    /// 
    /// </summary>
    public class ComplexGeometry : List<LineSegments>
    {
        // stores the dictionary
        Dictionary<Point, LineSegments> _segments =
            new Dictionary<Point, LineSegments>();

        /// <summary>

dg1an3

    public enum Orientation
    {
        Transverse,
        Sagittal,
        Coronal
    }

    public static class MprGenerator<TPixel>
    {
        // generates an MPR from a volume given an orientation

dg1an3

#load "FsSampleImage.fsx"

open System.Collections.Generic
open FsSampleImage

let rows<'T> (samples: Map<Index,'T>) = 
    samples                     // extracts rows of samples from the "image" Map
    |> Seq.sortBy (fun samp -> samp.Key.x)
    |> Seq.groupBy (fun samp -> samp.Key.y)
    |> Seq.map snd

dg1an3

// for a 2D array of pixels with some pixel type
var pixels = new TPixel[100,100];

// turn into a sequence
var pixelSequence = pixels.Cast<TPixelType>();

// group the sequence and turn to a dictionary, with pixel values as key and bin count as value
var histo = pixelSequence.GroupBy(px => px).ToDictionary(grp => grp.Key, grp => grp.Count());