Video signal processing device, video signal processing method, and video signal processing program

A video signal processing method that generates an interpolated frame between original-image frames formed by existing video signals, the video signal processing method comprising:

• generating information indicating for each pixel a process in which a pixel forming the interpolated frame is generated;
• determining for each pixel a level of enhancement to be applied to the pixel forming the interpolated frame by using the information generated by the generating;
• adjusting for each pixel a coefficient of an enhancement filter according to a determined level;
• and
• applying the enhancement filter of which coefficient is adjusted for each pixel by the adjusting, to the pixel forming the interpolated frame.

A frame-rate converting device that converts a frame rate by inserting an interpolated frame between original-image frames, the frame-rate converting device comprising:

• a frame interpolation unit that generates the interpolated frame for interpolating between the original-image frames;
• a pixel-information generating unit that generates information indicating for each pixel a process in which a pixel forming the interpolated frame is generated;
• a coefficient adjusting unit that determines for each pixel a level of enhancement to be applied to the pixel forming the interpolated frame by using the information generated by the pixel-information generating unit, and that adjusts for each pixel a coefficient of an enhancement filter according to the determined level;
• an enhancement-filter applying unit that applies the enhancement filter of which coefficient is adjusted for each pixel by the coefficient adjusting unit, to the pixel forming the interpolated frame generated by the frame interpolation unit;
• and
• an interpolated frame inserting unit that inserts the interpolated frame, to which the enhancement filter is applied by the enhancement-filter applying unit, between the original-image frames.