發(fā)布時(shí)間：2018-08-25 08:21

【摘要】：針對(duì)全景視頻映射過程中局部區(qū)域變形過大、冗余數(shù)據(jù)量極高的問題,提出了一種雙環(huán)帶映射算法(DRP)。首先,根據(jù)球面視頻的幾何特點(diǎn),結(jié)合人眼視度(HVS)這一視覺特性,用兩個(gè)相互正交的環(huán)形區(qū)域,將球面視頻分割成14個(gè)大小相近的區(qū)域;然后根據(jù)空域采樣定理,采用蘭索斯插值法,將這14個(gè)區(qū)域?qū)?yīng)的球面視頻內(nèi)容映射為14個(gè)大小相等的矩形視頻;最后,根據(jù)最新視頻編碼標(biāo)準(zhǔn)的特點(diǎn),重新排列這14個(gè)矩形視頻,得到符合編碼器標(biāo)準(zhǔn)的緊湊的全景視頻。實(shí)驗(yàn)結(jié)果表明,與經(jīng)緯圖映射算法(ERP)、八面體映射算法(OHP)、二十面體映射算法(ISP)相比,DRP算法在視頻壓縮性能方面有良好的表現(xiàn);其中同最流行的ERP算法相比,碼率平均降低8.61%,明顯提升了視頻編碼效率。
[Abstract]:In order to solve the problem that the local area deformation is too large and the redundant data is extremely high in panoramic video mapping process, a double loop band mapping algorithm (DRP). Is proposed. Firstly, according to the geometric characteristics of spherical video, combined with the visual characteristic of human visual degree (HVS), the spherical video is divided into 14 regions of similar size by using two orthogonal ring regions, and then according to the spatial sampling theorem, The spherical video content corresponding to these 14 regions is mapped to 14 rectangular video of equal size by Ransors interpolation. Finally, according to the characteristics of the latest video coding standards, the 14 rectangular video are rearranged. Get a compact panoramic video that meets the encoder standard. The experimental results show that compared with the longitude and latitude map mapping algorithm (ERP), octahedron mapping algorithm (OHP), icosahedron mapping algorithm (ISP) algorithm has a good performance in video compression performance, and compared with the most popular ERP algorithm, The average bit rate is reduced by 8.61, which obviously improves the efficiency of video coding.
【作者單位】： 上海大學(xué)通信與信息工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(61271212) 國(guó)家863計(jì)劃項(xiàng)目(2015AA015903)~~
【分類號(hào)】：TN919.81

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉鵬;李湛;盧朝陽(yáng);宮豐奎;;一種新的解映射算法的推導(dǎo)和實(shí)現(xiàn)[J];電路與系統(tǒng)學(xué)報(bào);2006年05期

2 何國(guó)輝;一種圖象變形映射算法的研究[J];中國(guó)圖象圖形學(xué)報(bào);1998年05期

3 王文濤;王夫蔚;龔書喜;王興;;采用隱式空間映射算法的陣列方向圖綜合[J];西安電子科技大學(xué)學(xué)報(bào);2012年02期

4 董政;鞏克現(xiàn);葛臨東;;對(duì)稱α穩(wěn)定分布噪聲下的軟解映射算法[J];計(jì)算機(jī)工程;2014年06期

5 蔡志鵬;黎鎖平;;選擇性映射算法中的相位序列研究[J];無線通信技術(shù);2007年02期

6 黎鎖平;蔡志鵬;何繼愛;;降低OFDM系統(tǒng)峰均比的選擇性映射算法研究[J];信號(hào)處理;2008年04期

7 郜盛魁;劉凱;張s，

本文編號(hào)：2202313