IMAGE ENHANCEMENT AND DATA LOSS RECOVERY USING WAVELET TRANSFORMS

摘要

A method and system for image enhancement and data-loss recovery using wavelet transforms is disclosed. The coefficients are estimated for each particular estimated section using information obtained from that section. The method and system includes performing an inverse wavelet transform on the wavelet transformed image to obtain the enlarged image. The wavelet transformed frame includes the present video frame and the estimated sections, to obtain a high resolution video frame having a greater resolution than the present video frame. The present invention provides several methods and apparatus for providing enhanced, high resolution images and enhanced video sequences, and for recovering data lost during transmission. The techniques described allow images to be expanded in size and resolution with little loss in quality, and allows video frames to be reconstituted to create a smoother video presentation.