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Multilevel video compression, decompression, and display for 4K and 8K applications
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A video frame, video image technology applied in the field of multi-level video compression, decompression and display for 4K and 8K applications to achieve the effect of reducing delivery costs
Active Publication Date: 2017-05-10
雅玛兹资讯处理公司
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Summary
Abstract
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Mobile devices present particularly difficult problems for conventional cable or fiber optic systems, and with the worldwide proliferation of wireless communications, alternatives are desperately needed
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example 1
[0322] Example 1: Performance Data
[0323] The method based on mathematics using Haar wavelet transform to calculate the exact value of frame pixels was extensively tested using H264 and H265 video codecs incorporating the proposed preprocessing and postprocessing steps. H265 offers some improvement in the compression ratio over H264, but it is more complex and cannot be used for real-time performance on typical portable devices, and also, the methods discussed earlier using the H264 codec give better of compression.
[0324] Hence, using the H264 video codec with the pre-processing and post-processing algorithms discussed above achieved the performance values given in Table 2 below.
[0326] video HD 1080p bitrate 4K UHD bitrate Movie 1Mbps 1.5Mbps nature 1Mbps 1.5Mbps physical education 1.1Mbps 1.75Mbps
[0327] In terms of PSNR values, Table 3 below shows, for e...
example 2
[0331] Example 2: Apparatus incorporating a software-implemented method
[0332] Pre- and post-processing devices
[0333] The methods disclosed herein can be implemented in many computerized devices. Computerized processing steps can be implemented in a pre-processor that performs decimation and Haar wavelet based compression. Such a device may be manufactured and provided as a separate, stand-alone component of a computer system, and may be added to an existing computer, mobile device, television, cable box, set-top box, or similar such device.
[0334] Additionally, the methods disclosed herein can be implemented as a post-processor that decompresses the output from the codec. Such a post-processor may be added to an existing computer, television, mobile device, cable box, set-top box, or similar device.
[0335]The present invention includes an integrated device for pre-processing and post-processing of frames according to the methods disclosed herein. The preprocessin...
[0338] With respect to images and video frames, the method is applied first to columns and then to rows. Furthermore, for color images, the method can be applied to the luma (Y) and chrominance (UV) components separately.
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Abstract
Embodiments of this invention include computer-implemented methods for use of Haar wavelet transforms (HWT) to pre-process video frames that can then be compressed using a codec to produce a compressed video frame. A compressed video frame can then be transmitted, decompressed, post-processed and displayed in their original size and quality, thereby producing real-time high-quality reproduction of video sequences. Devices can implement methods of this invention and include mainframe computers, desktop computers, personal computers, laptop computers, tablet computers, wireless computers, television sets, set top boxes, cellular telephones, and computer readable media. Computer implemented steps can be easily and efficiently implemented in multicore parallel hardware architectures.
Description
[0001] priority claim [0002] This international application is based upon U.S. Provisional Patent Application No. 62 / 025,365 filed on July 16, 2014, U.S. Provisional Patent Application No. 62 / 097,255 filed on December 29, 2014 and filed on April 21, 2015 Priority of U.S. Provisional Patent Application No. 62 / 150,436, each entitled "Multilevel Video Compression, Decompression and Display for 4K and 8K applications," inventor Angel DeCegama. Each of these applications is hereby incorporated by reference in its entirety as if individually incorporated. [0003] Copyright Notice [0004] This application contains material that is protected by the copyright laws of the United States (18 U.S.C.) and other countries. technical field [0005] This application deals with video compression, transmission, decompression and display. In particular, the invention relates to new devices and methods for pre-processing and post-processing video information. More particularly, the present...
Claims
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