Performs up-sampling step of Gaussian pyramid decomposition. First it upsamples this image by injecting even zero rows and columns and then convolves result with the specified filter multiplied by 4 for interpolation. So the resulting image is four times larger than the source image.

public Image<TColor, TDepth> PyrUp()

Public Function PyrUp As Image(Of TColor, TDepth)

public:
Image<TColor, TDepth>^ PyrUp()