Global motion-compensated sequential-scanning method considering horizontal and vertical patterns

A method of sequentially scanning image data, the method comprising the steps of:

• performing a first motion estimation on image data to generate motion vectors indicating motion between a previous field and a next fields;
• performing a motion compensation, using the motion vectors, to motion compensate the previous and the next fields;
• selecting an average value of pixels of the previous field and pixels of the next field to interpolate the current field if the difference between the motion compensated previous and next fields is lower than a first threshold value,
• wherein the method is performed by a computer processor.

A method of sequentially scanning image data, the method comprising the steps of:

• performing a first interpolation on image data;
• performing a second interpolation on the image data;
• comparing a first vertical energy of a result of the first interpolation that is higher than a first threshold frequency with a second vertical energy of the result of second interpolation that is higher that a second threshold frequency;
• and
• selecting one of the result of the first interpolation, the result of the second, interpolation and a weighted combination of the result of the first interpolation and the result of the second interpolation based on the comparison,
• wherein the step of comparing comprises:
• calculating a weighted difference value from a horizontal differential value and a vertical differential value for each of the result of the first interpolation and the result of the second interpolation, and
• wherein the method is performed by a computer processor.