微处理机
微處理機
미처리궤
MICROPROCESSORS
2015年
4期
81-84,88
,共5页
嵌入式%灰度投影%电子稳像%运动补偿%差影%峰值性噪比
嵌入式%灰度投影%電子穩像%運動補償%差影%峰值性譟比
감입식%회도투영%전자은상%운동보상%차영%봉치성조비
Embedded%Gray projection%Electronic image stabilization%Motion compensation%Subtraction image%Peak signal to noise ratio
针对摄像头固定状态下拍摄的视频抖动,设计了一个可以快速消除视频抖动现象的实时嵌入式电子稳像系统。系统改进了传统的灰度投影算法,对采集的视频帧序列进行预处理,估计运动矢量,投影滤波和运动补偿实现稳像功能。通过差影法和峰值信噪比法对稳像效果进行了主客观分析,分析结果表明该系统处理速度快,成本低,稳像效果较好,在视频监控、图像拼接、运动目标检测等领域都有重要的应用价值。
針對攝像頭固定狀態下拍攝的視頻抖動,設計瞭一箇可以快速消除視頻抖動現象的實時嵌入式電子穩像繫統。繫統改進瞭傳統的灰度投影算法,對採集的視頻幀序列進行預處理,估計運動矢量,投影濾波和運動補償實現穩像功能。通過差影法和峰值信譟比法對穩像效果進行瞭主客觀分析,分析結果錶明該繫統處理速度快,成本低,穩像效果較好,在視頻鑑控、圖像拼接、運動目標檢測等領域都有重要的應用價值。
침대섭상두고정상태하박섭적시빈두동,설계료일개가이쾌속소제시빈두동현상적실시감입식전자은상계통。계통개진료전통적회도투영산법,대채집적시빈정서렬진행예처리,고계운동시량,투영려파화운동보상실현은상공능。통과차영법화봉치신조비법대은상효과진행료주객관분석,분석결과표명해계통처리속도쾌,성본저,은상효과교호,재시빈감공、도상병접、운동목표검측등영역도유중요적응용개치。
For dithering video captured by the fixed camera,this paper designs a real -time embed-ded electronic image stabilization system which can quickly eliminate the dithered phenomenon among video frame sequences.This system realizes the image stabilization function by using the improved gray projection algorithm to preprocess the video frames,estimate the motion vector,filter the projection waves and compensate the motion vector.Through the methods of difference image and PSNR (Peak Signal to Noise Ratio)to analyze the image stabilization effect,the results show that the system has quick process, low cost and good image stabilization.It has significant application value in video surveillance,image stitching,moving target detection,etc.