Image processing method and device

Abstract

The invention discloses an image processing method and an image processing device to correct interpolation errors in the prior art. The image processing method comprises the following steps: sensing a motion vector of a first image block in a first image to decide a flag value of the first image block, wherein the flag value is used for indicating that whether the image content of the first imageblock has relatively small change; and calculating a target motion vector of an image block to be interpolated according to the flag value.

Description

technical field [0001] The present invention relates to an image processing mechanism, in particular to an image processing method for determining an object movement vector used in an image block to be interpolated by detecting an image object tracked by a camera lens in an image frame. In addition, it also relates to an image processing device. Background technique [0002] Generally speaking, to generate the motion vector required for an image block to be interpolated in an interpolated image, the motion vector is determined by referring to the image blocks of two images at adjacent time points and generating the motion vector at the position of the image block to be interpolated. Image blocks that should be interpolated. However, directly using general image interpolation methods to interpolate any kind of image will sometimes produce serious interpolation errors. The tracking relationship shows that the tracked object in the scene screen has a slower movement (that is,...

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Problems solved by technology

like figure 2 As shown in the left half of , in frame f4, a certain part of the character (circle with diagonal lines) is still covered by trees, but in frame f5, the character is not covered by trees (solid circle) and can be seen to all images of the person, and figure 2 The right half of is to explain that when the traditional method is used to determine the motion vector of the interpolated image block position P2 of the interpolated image finer, because the image at the position P2' of the previous frame f4' is different from that of the next frame The images at the position P2” of the frame f5’ are very different. The traditional method will choose to interpolate other similar but possibly irrelevant image blocks to the position P2. However, since other similar image blocks do not mean corresponding to the covered part of the character, so the traditional method is prone to image interpolation errors; for example, in figure 2 In the example on the right half of , the image at position P2"' (representing the image of the green space) is directly interpolated to position P2, resulting in an obvious error

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