电子与信息学报
電子與信息學報
전자여신식학보
JOURNAL OF ELECTRONICS & INFORMATION TECHNOLOGY
2014年
12期
2855-2860
,共6页
沈秋%李小凡%孔繁锵%代俣西
瀋鞦%李小凡%孔繁鏘%代俁西
침추%리소범%공번장%대오서
视频压缩%无人机视频%全局运动估计%仿射模型
視頻壓縮%無人機視頻%全跼運動估計%倣射模型
시빈압축%무인궤시빈%전국운동고계%방사모형
Video compression%Unmanned Aerial Vehicle (UAV) videos%Global motion estimation%Affine model
在现有算法无法满足无人机视频实时压缩传输需求的应用背景下,该文提出一种新的低复杂度无人机(Unmanned Aerial Vehicle, UAV)视频实时压缩算法,利用无人机视频的背景平面性、运动一致性等特点,建立仿射模型描述视频的全局运动,并根据模型参数进行视频压缩。实验结果表明,与现有压缩算法 H.264相比,该算法在保证压缩性能的前提下,大量减少了压缩时间,可满足大多数情况下无人机视频传输的质量要求和实时性要求。
在現有算法無法滿足無人機視頻實時壓縮傳輸需求的應用揹景下,該文提齣一種新的低複雜度無人機(Unmanned Aerial Vehicle, UAV)視頻實時壓縮算法,利用無人機視頻的揹景平麵性、運動一緻性等特點,建立倣射模型描述視頻的全跼運動,併根據模型參數進行視頻壓縮。實驗結果錶明,與現有壓縮算法 H.264相比,該算法在保證壓縮性能的前提下,大量減少瞭壓縮時間,可滿足大多數情況下無人機視頻傳輸的質量要求和實時性要求。
재현유산법무법만족무인궤시빈실시압축전수수구적응용배경하,해문제출일충신적저복잡도무인궤(Unmanned Aerial Vehicle, UAV)시빈실시압축산법,이용무인궤시빈적배경평면성、운동일치성등특점,건립방사모형묘술시빈적전국운동,병근거모형삼수진행시빈압축。실험결과표명,여현유압축산법 H.264상비,해산법재보증압축성능적전제하,대량감소료압축시간,가만족대다수정황하무인궤시빈전수적질량요구화실시성요구。
Since the existing algorithms can not meet the requirements of real-time compression and transmission for UAV(Unmanned Aerial Vehicle) videos, a new real-time compression algorithm with low complexity for UAV videos is proposed. Considering the plane background and unified motion of UAV videos, the proposed method establishes an affine model for global motion estimation and compression. The experimental results demonstrate that the proposed algorithm is able to reduce the total encoding time while maintaining the performance compared with H.264, which the quality requirement and real-time performance for UAV videos transmission can be satisfied in most cases.