基于自適應預選的快速幀間模式選擇算法
發(fā)布時間:2018-08-26 21:29
【摘要】:針對率失真性能和算法復雜度約束,提出基于偏移量自適應模式預選的高效幀間模式選擇算法.計算所有可能模式率失真優(yōu)化關(guān)閉判據(jù)下的編碼代價,對代價進行自適應偏移量調(diào)整.基于調(diào)整后的代價進行模式預選,選擇幾種性能可能較優(yōu)的候選模式,對這些模式進行率失真優(yōu)化模式選擇.由于該算法采用統(tǒng)計分析建模方法,自適應地確定偏移量參數(shù),顯著提高了模式預選準確率,較好地平衡了復雜度和算法性能.針對典型視頻測試序列進行算法驗證.實驗表明,與完全率失真優(yōu)化模式選擇算法相比,該算法的復雜度大大降低,視頻質(zhì)量僅存在輕微退化.
[Abstract]:An efficient inter-frame mode selection algorithm based on offset adaptive mode pre-selection is proposed for rate-distortion performance and algorithm complexity constraints. The coding cost under the optimal closure criterion of the possible mode rate-distortion is calculated and the cost is adjusted by adaptive offset. Based on the adjusted cost, several candidate modes are selected, and the rate-distortion optimization modes are selected for these modes. Due to the statistical analysis and modeling method, the algorithm adaptively determines the offset parameters, which improves the accuracy of pattern pre-selection and balances the complexity and performance of the algorithm. The algorithm is validated for typical video test sequences. The experimental results show that compared with the perfect rate-distortion optimal mode selection algorithm, the complexity of the algorithm is greatly reduced, and the video quality is only slightly degraded.
【作者單位】: 中國計量學院信息工程學院;
【基金】:浙江省自然科學基金資助項目(Y1110114,LY12F05007,LY12F01011,LY13H180011) 國家“十二五”科技支撐計劃資助項目(2013BAH54F04)
【分類號】:TN919.81
本文編號:2206215
[Abstract]:An efficient inter-frame mode selection algorithm based on offset adaptive mode pre-selection is proposed for rate-distortion performance and algorithm complexity constraints. The coding cost under the optimal closure criterion of the possible mode rate-distortion is calculated and the cost is adjusted by adaptive offset. Based on the adjusted cost, several candidate modes are selected, and the rate-distortion optimization modes are selected for these modes. Due to the statistical analysis and modeling method, the algorithm adaptively determines the offset parameters, which improves the accuracy of pattern pre-selection and balances the complexity and performance of the algorithm. The algorithm is validated for typical video test sequences. The experimental results show that compared with the perfect rate-distortion optimal mode selection algorithm, the complexity of the algorithm is greatly reduced, and the video quality is only slightly degraded.
【作者單位】: 中國計量學院信息工程學院;
【基金】:浙江省自然科學基金資助項目(Y1110114,LY12F05007,LY12F01011,LY13H180011) 國家“十二五”科技支撐計劃資助項目(2013BAH54F04)
【分類號】:TN919.81
【共引文獻】
相關(guān)期刊論文 前5條
1 黃偉文;張坤;;MHG平臺下的Web瀏覽器的設(shè)計及實現(xiàn)[J];計算機工程與應用;2010年10期
2 王英坤;徐伯慶;楊華;;高效幀內(nèi)預測模式選擇算法[J];計算機應用;2008年S1期
3 滑斌杰;張有會;王志巍;李金紅;;一種基于紋理分析的快速幀內(nèi)預測算法[J];計算機仿真;2009年11期
4 李志娟;戴瑜興;劉宏立;;基于圖像特征的H.264快速幀內(nèi)模式預測算法[J];計算機系統(tǒng)應用;2009年11期
5 王萍;李平;;基于圖像紋理特征的H.264/AVC幀內(nèi)預測快速算法[J];微電子學與計算機;2014年11期
相關(guān)碩士學位論文 前4條
1 陳政;H.264幀內(nèi)預測快速模式選擇算法研究[D];上海交通大學;2011年
2 滑斌杰;基于紋理分析的H.264/AVC幀內(nèi)預測算法研究[D];河北師范大學;2009年
3 李志娟;H.264視頻編碼快速算法研究及其DM6437實現(xiàn)[D];湖南大學;2010年
4 徐寧;基于自適應模式預選的快速模式選擇視頻編碼算法的研究[D];中國計量學院;2013年
,本文編號:2206215
本文鏈接:http://www.sikaile.net/kejilunwen/wltx/2206215.html
最近更新
教材專著