Image processing apparatus

A control method of controlling an image processing apparatus which calculates a change predicted value of a pixel value of a pixel of interest included in a field of interest upon generating a progressive video signal from an interlaced video signal, and comprises a plurality of field memories adapted to store each one of sequentially input fields, said method comprising:

• a predicted value calculation step of calculating a change predicted value before correction of the pixel value of the pixel of interest based on the field of interest and at least one of fields which neighbors the field of interest and is stored in the plurality of field memories;
• one or more interframe difference coefficient calculation steps of respectively calculating interframe difference coefficients based on any of two fields having a field interval of 2 of a plurality of fields stored in the plurality of field memories, and a field which is being input;
• a correction value calculation step of calculating a correction value of the change predicted value based on the interframe difference coefficients calculated in the coefficient calculation steps;
• and
• a correction step of correcting the change predicted value before correction calculated in the change predicted value calculation step based on the correction value calculated in the correction value calculation step and outputting a change predicted value after correction.