National Central University

Hsueh-Yi Lin

Tsung-Han Tsai

Hong-Guang Chen

Chen-Yung Hsiao

An image processing method comprises obtaining a current frame and a previous frame, performing a bilateral motion estimation to the current frame and the previous frame for acquiring a motion vector, and performing a motion compensated interpolation to the current frame, the previous frame and the motion vector for acquiring an interpolated frame. The bilateral motion estimation uses sum of bilateral absolute difference algorithm to generate at least one sum of bilateral absolute difference, and then an adaptive parameter is added to each of the sum of bilateral absolute difference to generate at least one adaptive sum of bilateral absolute difference. A group of matching blocks having a minimum adaptive sum of bilateral absolute difference is then determined to be the group of best matching blocks. The motion vector is obtained according to the relative locations of the best matching blocks.

Image processing method

A method for processing an image includes capturing a current frame and a previous frame and performing uni-directional motion estimation on the same for obtaining an initial motion vector; performing motion compensated interpolation with respect to the current and previous frames, and the motion vector for acquiring an interpolated frame; calculating and obtaining second motion vectors corresponding to target blocks in the current frame symmetrically using the interpolated block as a center; calculating and obtaining third motion vectors corresponding to the second motion vectors in the previous frame; obtaining distance values using a motion trajectory calibration process with respect to the second and third motion vectors; and obtaining the minimum distance value from the distance values and performing a bi-directional motion compensation process with respect to the motion trajectory corresponding to the minimum distance value obtained from the distance values.

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Jhongli, Taiwan

Hsueh-Yi Lin