Deinterlacing apparatus and method

PURPOSE: A deinterlacing system and method are provided to adaptively compensate an intensity value of pixel values to reduce blocking artifact and judder. CONSTITUTION: A deinterlacing system includes a motion estimation unit(200), a motion compensation unit(201), a spatio-temporal interpolation unit(202), a motion reliability analysis unit(203), and an adaptive motion compensation unit(204). The motion estimation unit estimates a motion vector of a block to be interpolated in the current field using a block of a previous field. The motion compensation unit carries out motion compensation and obtains a motion compensation value. The spatio-temporal interpolation unit obtains a pixel value to be spatial-interpolated and a pixel value to be temporal-interpolated. The motion reliability analysis unit generates and calculates motion reliability factors and judges motion reliability for the motion vector of the currently interpolated pixel. The adaptive motion compensation unit includes a low pass filter and a selector. The low pass filter gives a weight to the pixel value output from the motion compensation unit and the pixel value output from the spatio-temporal interpolation unit and low-pass-filters the pixel values. The selector selects one of the output value of the low pass filter and the pixel value output from the spatio-temporal interpolation unit.