public override bool IsSimilar(IHashDetails other, double similarity)
{
if (Hash.Length != other.Hash.Length || !(other is BrightnessHash))
{
return(false);
}
//If the aspect ratio is too different then don't bother checking the hash
var margin = 1 - similarity;
var xAspect = this.GetAspectRatio();
var yAspect = other.GetAspectRatio();
if (xAspect > yAspect * (1 + margin) || xAspect < yAspect * (1 - margin))
{
return(false);
}
var matchCount = 0;
var xHash = Hash;
var yHash = other.Hash;
for (var i = 0; i < xHash.Length; ++i)
{
if (xHash[i] == yHash[i])
{
++matchCount;
}
}
return((matchCount / (float)xHash.Length) >= similarity);
}
protected FileImageDetails(
DateTimeOffset createdAt,
string source,
IHashDetails original,
IHashDetails thumbnail)
{
CreatedAt = createdAt;
Original = original;
Source = source;
Thumbnail = thumbnail;
}
public override bool IsSimilar(IHashDetails other, double similarity) => false;
public static float GetAspectRatio(this IHashDetails details) => details.Width / (float)details.Height;
protected ImageDetails(IHashDetails original, IHashDetails thumbnail)
{
Original = original;
Thumbnail = thumbnail;
}
