A method for repairing black frames of old movies based on motion path guidance

Abstract

The invention discloses a method for repairing old movie black frames guided by a motion path, which includes: a motion path estimation step, wherein optical flow estimation is used to obtain motion path constraints between front and rear reference frames; a pre-interpolation step, wherein adaptive bidirectional frames are used Interpolation interpolation to obtain the pre-processing intermediate frame; black hole filling step, in which the neighborhood pixel filling is performed on the black hole in the pre-processing intermediate frame, thereby improving the accuracy of the final interpolation; and the final interpolation step, in which the pre-processing intermediate frame containing the motion path constraint Frames are reconstructed based on blocks, so as to restore the black frames in old movies into intermediate frames with natural transitions. The method of the present invention can not only better satisfy the reconstruction effect, but also take into account the computational complexity. For most of the old movie lenses, even some relatively complex anamorphic lenses can also better restore the intermediate frame.

Description

technical field [0001] The invention relates to the field of computer image repair, in particular to a method for repairing black frames of old movies guided by motion paths. Background technique [0002] Because it reflects the appearance of the early society and expresses the form of early art, old movies have become precious historical video materials and have great research and preservation value. However, due to the influence of historical reasons and technology, and the physical inability of the film itself to resist the natural environment, many problems such as spots, scratches, fading, and defects have appeared in the preservation of film films for a long time. And these problems persisted after the film was digitized by telecine. [0003] When part of the film of an old movie is missing, black frames often appear as substitute frames to make up for the space, thereby maintaining the frame rate of the movie playback. However, the insertion of black frames will cau...

AI Technical Summary

Problems solved by technology

However, although the existing algorithms have their own advantages, there are problems of poor reconstruction effect or complex calculation

Images