Patent ID: RE40469

Claim:
A method for interpolating an original picture in a frame unit (a binary picture: BAB) by using a context probability table set previously in order to reconstruct the original picture in the frame unit having low resolution as the picture having high resolution through an up-sampling, said method comprising the steps of: dividing said original picture in the frame unit into a plurality of blocks (each having a size of 8×8 pixels); extending each of said plurality of blocks divided to a double size; forming a context template for an interpolating pixel in each of the extended blocks; getting indexes of the context template to obtain a probability value indicating whether or not a pixel value is detected and obtaining the probability value of the interpolating pixel from the context probability table set previously by a use of the indexes of the context template obtained; and deciding the interpolating pixel value (‘0’ or ‘1’) based on the context probability value obtained of the interpolating pixel.