/// <summary>
/// Draw the matched keypoints between the model image and the observered image.
/// </summary>
/// <param name="modelImage">The model image</param>
/// <param name="modelKeypoints">The keypoints in the model image</param>
/// <param name="observedImage">The observed image</param>
/// <param name="observedKeyPoints">The keypoints in the observed image</param>
/// <param name="matchColor">The color for the match correspondence lines</param>
/// <param name="singlePointColor">The color for highlighting the keypoints</param>
/// <param name="mask">The mask for the matches. Use null for all matches.</param>
/// <param name="flags">The drawing type</param>
/// <param name="result">The image where model and observed image is displayed side by side. Matches are drawn as indicated by the flag</param>
/// <param name="matches">Matches. Each matches[i] is k or less matches for the same query descriptor.</param>
public static void DrawMatches(
IInputArray modelImage,
VectorOfKeyPoint modelKeypoints,
IInputArray observedImage,
VectorOfKeyPoint observedKeyPoints,
VectorOfDMatch matches,
IInputOutputArray result,
MCvScalar matchColor,
MCvScalar singlePointColor,
VectorOfByte mask = null,
KeypointDrawType flags = KeypointDrawType.Default)
{
using (InputArray iaModelImage = modelImage.GetInputArray())
using (InputArray iaObservedImage = observedImage.GetInputArray())
using (InputOutputArray ioaResult = result.GetInputOutputArray())
Features2DInvoke.drawMatchedFeatures1(iaObservedImage, observedKeyPoints, iaModelImage,
modelKeypoints, matches, ioaResult, ref matchColor, ref singlePointColor, mask, flags);
}