public static IntField FieldcodeRunlengthsDe(List <int[]> fields, int width, int height, SymbolCodec runlengthCodec, Compressor compr)
{
IntField image = new IntField(width, height);
for (int i = 1; i <= 3; i++)
{
CodecUtil.Shift(fields[i - 1], -1);
var f = runlengthCodec.Decode(fields[i - 1]);
for (int p = 0; p < width * height; p++)
{
if (f[p] == 1)
{
image.Data[p] = i;
}
}
// Visualise
IntField img = new IntField(width, height);
img.Data = f;
compr.AddImageGrayscale(img, 0, 1, "field" + i);
}
compr.AddImageGrayscale(image, 0, 3, "xformed");
return(image);
}
public static int[] FieldcodeRunlengthsEn2(IntField image, SymbolCodec runlengthCodec, Compressor compr)
{
compr.AddImageGrayscale(image, 0, 3, "xformed");
List <int> data = new List <int>();
for (int i = 1; i <= 3; i++)
{
IntField temp = image.Clone();
temp.Map(x => x == i ? 1 : 0);
data.AddRange(temp.Data);
compr.AddImageGrayscale(temp, 0, 1, "field" + i);
}
var runs = runlengthCodec.Encode(data.ToArray());
compr.SetCounter("runs", runs.Length);
return(runs);
}
public static List <int[]> FieldcodeRunlengthsEn(IntField image, SymbolCodec runlengthCodec, Compressor compr)
{
compr.AddImageGrayscale(image, 0, 3, "xformed");
var fields = new List <int[]>();
for (int i = 1; i <= 3; i++)
{
IntField temp = image.Clone();
temp.Map(x => x == i ? 1 : 0);
var field = runlengthCodec.Encode(temp.Data);
CodecUtil.Shift(field, 1);
compr.SetCounter("symbols|field-" + i, field.Length);
fields.Add(field);
compr.AddImageGrayscale(temp, 0, 1, "field" + i);
}
return(fields);
}
public static IntField FieldcodeRunlengthsDe2(int[] runs, int width, int height, SymbolCodec runlengthCodec, Compressor compr)
{
IntField image = new IntField(width, height);
var data = runlengthCodec.Decode(runs);
for (int i = 1; i <= 3; i++)
{
int offs = width * height * (i - 1);
for (int p = 0; p < width * height; p++)
{
if (data[offs + p] == 1)
{
image.Data[p] = i;
}
}
// Visualise
IntField img = new IntField(width, height);
Array.Copy(data, offs, img.Data, 0, width * height);
compr.AddImageGrayscale(img, 0, 1, "field" + i);
}
compr.AddImageGrayscale(image, 0, 3, "xformed");
return(image);
}