/
QualitySSIM.cs
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/
QualitySSIM.cs
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using OpenCvSharp.Internal;
// ReSharper disable InconsistentNaming
// ReSharper disable IdentifierTypo
namespace OpenCvSharp.Quality;
/// <summary>
/// Full reference structural similarity algorithm https://en.wikipedia.org/wiki/Structural_similarity
/// </summary>
public class QualitySSIM : QualityBase
{
private Ptr? ptrObj;
/// <summary>
/// Creates instance by raw pointer
/// </summary>
protected QualitySSIM(IntPtr p)
{
ptrObj = new Ptr(p);
ptr = ptrObj.Get();
}
/// <summary>
/// Create an object which calculates quality
/// </summary>
/// <param name="ref">input image to use as the source for comparison</param>
/// <returns></returns>
public static QualitySSIM Create(InputArray @ref)
{
if (@ref is null)
throw new ArgumentNullException(nameof(@ref));
@ref.ThrowIfDisposed();
NativeMethods.HandleException(
NativeMethods.quality_createQualitySSIM(@ref.CvPtr, out var ptr));
GC.KeepAlive(@ref);
return new QualitySSIM(ptr);
}
/// <summary>
/// static method for computing quality
/// </summary>
/// <param name="ref"></param>
/// <param name="cmp"></param>
/// <param name="qualityMap">output quality map, or null</param>
/// <returns>cv::Scalar with per-channel quality values. Values range from 0 (worst) to 1 (best)</returns>
public static Scalar Compute(InputArray @ref, InputArray cmp, OutputArray? qualityMap)
{
if (@ref is null)
throw new ArgumentNullException(nameof(@ref));
if (cmp is null)
throw new ArgumentNullException(nameof(cmp));
@ref.ThrowIfDisposed();
cmp.ThrowIfDisposed();
qualityMap?.ThrowIfNotReady();
NativeMethods.HandleException(
NativeMethods.quality_QualitySSIM_staticCompute(
@ref.CvPtr, cmp.CvPtr, qualityMap?.CvPtr ?? IntPtr.Zero, out var ret));
GC.KeepAlive(@ref);
GC.KeepAlive(cmp);
qualityMap?.Fix();
return ret;
}
/// <summary>
/// Releases managed resources
/// </summary>
protected override void DisposeManaged()
{
ptrObj?.Dispose();
ptrObj = null;
base.DisposeManaged();
}
internal class Ptr : OpenCvSharp.Ptr
{
public Ptr(IntPtr ptr) : base(ptr)
{
}
public override IntPtr Get()
{
NativeMethods.HandleException(
NativeMethods.quality_Ptr_QualitySSIM_get(ptr, out var ret));
GC.KeepAlive(this);
return ret;
}
protected override void DisposeUnmanaged()
{
NativeMethods.HandleException(
NativeMethods.quality_Ptr_QualitySSIM_delete(ptr));
base.DisposeUnmanaged();
}
}
}