Image processing method and correlated apparatus for generating target image data block

Abstract

The invention provides an image processing method used to generate a target image data block needed by a position to be interpolated currently in an interpolation frame between two frames. The method comprises steps of referring to a plurality of image data blocks of the two frames to implement a motion estimating operation so as to determine a motion vector and determine a first image data blockaccording to the motion vector; determining a second image data block according to two image data blocks respectively corresponding to the interpolation positions in two frames and determining the target image data block according to the first image data block and the second image data block.

Description

technical field [0001] The present invention relates to an image processing mechanism, in particular to an image processing method for interpolating a target image data block and effectively avoiding artifacts in the target image data block and related devices. Background technique [0002] Generally speaking, when performing image interpolation operations, in order to generate an image data block required for a position to be interpolated in an interpolated frame between two frames, a motion vector is determined and an image is transformed using the motion vector. The data block is interpolated to the position to be interpolated. However, in some special cases, if the motion vector is directly used to interpolate the corresponding image data block at the position to be interpolated, artificial artifacts visible to human eyes may appear on the screen. Please refer to FIG. 1 . FIG. 1 is a schematic diagram of an image data block generated by an existing image processing mech...

AI Technical Summary

Problems solved by technology

[0003] However, when the existing image processing mechanism wants to interpolate the position P 3 When the image on the screen is displayed, it is very likely to produce artificial artifacts and cause serious picture distortion

Because image data block A 1 A corresponding image object has moved to position P in the interpolation frame F' 1 , so the position P 3 The picture above should display the background part that was originally covered by the image object; however, in fact, when the existing image processing mechanism calculates the minimum pixel difference for motion estimation, at frame F n-1 usually cannot be found with frame F n the position of P 3 The image data blocks that are more similar on the above (because the background part corresponding to this image data block is in the frame F n-1 has been corresponding to the image data block A 1 covered by image objects), even if it is still possible to find a motion vector corresponding to a certain minimum sum of absolute pixel differences, then using this motion vector at position P 3 The image generated from the above may cause serious picture distortion or artificial artifacts, for example, at the position P of the interpolation frame F' 3 Unwanted image data block A"

Images