Image interpolation method and apparatus, and method for obtaining interpolation coefficients

A method for obtaining image interpolation coefficients, the method comprising:

• constructing a one-dimensional Wiener-Hopf equation by using pixel points to be interpolated and integer pixel points and/or sub-pixel points in a row, a column or in any other directions of the pixel points;
• solving the one-dimensional Wiener-Hopf equation to obtain interpolation coefficients corresponding to the integer pixel points and/or sub-pixel points in the row, column or in any other directions of the pixel points;
• and
• obtaining the interpolation coefficients corresponding to the integer pixel points and/or sub-pixel points.

An image interpolation apparatus, comprising:

• a first obtaining module, adapted to obtain pixel values of integer pixel points and/or sub-pixel points in a row, a column or in any other directions of pixel points, wherein the sub-pixel points are pixel points between adjacent integer pixel points;
• a second obtaining module, adapted to obtain pre-calculated interpolation coefficients corresponding to the integer pixel points and/or sub-pixel points in the row, column or in any other directions of the pixel points;
• and
• a first calculating module, adapted to interpolate the pixel points according to the obtained pixel values of the integer pixel points and/or sub-pixel points and corresponding interpolation coefficients.