Abstract: A motion vector refining apparatus including a control unit, N filter units, and a mixer unit is provided. The control unit receives a motion estimation signal generated by a motion estimation unit and calculates a plurality of variation parameters according to a current motion vector, surrounding motion vectors, or a block matching error, so as to generate a control signal. The N filter units respectively calculate N filtering motion vectors by using N analysis processes. The mixer unit weights and mixes the filtering motion vectors according to the control signal to adjust and output a refined motion vector. Thereby, the motion vector refining apparatus can detect the edge of a moving object and mix filtering results of the analysis processes to adjust and refine motion vectors, so as to reduce image defects caused by a smooth processing.

Abstract: A motion vector refining device and a video refining method thereof are provided. The motion vector refining device includes a motion estimation unit, a reliability analysis module and a motion vector mixing module. The motion estimation unit receives a plurality of frames in a video signal or using historical information (for example, motion vectors of closing frames) previously calculated by the motion estimation unit, so as to estimate N target motion vectors. The reliability analysis module analyzes spatial and temporal reliability factors of the N target motion vectors, so as to estimate and adjust N reliability weight values dynamically. The motion vector mixing module uses the reliability weight values to dynamically mix the target motion vectors to produce a refined motion vector. Therefore, the motion vector refining device and a motion interpolation apparatus using the same can avoid instability of a motion vector on an edge of a moving object.

Abstract: A motion vector refining apparatus including a control unit, N filter units, and a mixer unit is provided. The control unit receives a motion estimation signal generated by a motion estimation unit and calculates a plurality of variation parameters according to a current motion vector, surrounding motion vectors, or a block matching error, so as to generate a control signal. The N filter units respectively calculate N filtering motion vectors by using N analysis processes. The mixer unit weights and mixes the filtering motion vectors according to the control signal to adjust and output a refined motion vector. Thereby, the motion vector refining apparatus can detect the edge of a moving object and mix filtering results of the analysis processes to adjust and refine motion vectors, so as to reduce image defects caused by a smooth processing.

Abstract: A system for applying multi-direction and multi-slope region detection to image edge enhancement is provided to perform the image edge enhancement on an image. For pixel (i) indicating i-th pixel of line of the image, a line buffer temporarily stores the pixel (i) and its neighboring pixels. A region classification device classifies the pixel (i) into a region type. A left flat pixel detector depends on the region type to search the neighboring pixels of the pixel (i) for a left flat region pixel. A right flat pixel detector depends on the region type to search the neighboring pixels of the pixel (i) for a right flat region pixel. An edge enhancer performs an edge enhancement operation on the pixel (i) and neighboring pixels when the pixel (i) is an extended region and the left and the right flat region pixels are included in the neighboring pixels.

Abstract: A system for applying multi-direction and multi-slope region detection to image edge enhancement is provided to perform the image edge enhancement on an image. For pixel (i) indicating i-th pixel of line of the image, a line buffer temporarily stores the pixel (i) and its neighboring pixels. A region classification device classifies the pixel (i) into a region type. A left flat pixel detector depends on the region type to search the neighboring pixels of the pixel (i) for a left flat region pixel. A right flat pixel detector depends on the region type to search the neighboring pixels of the pixel (i) for a right flat region pixel. An edge enhancer performs an edge enhancement operation on the pixel (i) and neighboring pixels when the pixel (i) is an extended region and the left and the right flat region pixels are included in the neighboring pixels.