计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2015年
11期
158-161,166
,共5页
深度图像后处理%置信区间的交点%最小均方逼近多项式技术%加权模式滤波器
深度圖像後處理%置信區間的交點%最小均方逼近多項式技術%加權模式濾波器
심도도상후처리%치신구간적교점%최소균방핍근다항식기술%가권모식려파기
depth map post-processing%intersection of confidence intervals%least square polynomial approximation%weighted mode filtering
基于深度图像的绘制是三维视频系统中的一项关键技术。然而，深度编码失真会对后续虚拟视点绘制的性能产生极大的影响。提出了一种面向虚拟视点绘制的深度图像后处理方法，利用基于置信区间的交点规则确定深度图像中每个像素点的滤波窗口，利用最小均方逼近多项式技术估计每个像素点的深度值，再利用加权模式滤波器对估计的深度图像进行滤波处理，得到深度滤波图像。实验结果表明，该方法能够精确地恢复出真实深度信息，提高虚拟视点图像的绘制性能。
基于深度圖像的繪製是三維視頻繫統中的一項關鍵技術。然而，深度編碼失真會對後續虛擬視點繪製的性能產生極大的影響。提齣瞭一種麵嚮虛擬視點繪製的深度圖像後處理方法，利用基于置信區間的交點規則確定深度圖像中每箇像素點的濾波窗口，利用最小均方逼近多項式技術估計每箇像素點的深度值，再利用加權模式濾波器對估計的深度圖像進行濾波處理，得到深度濾波圖像。實驗結果錶明，該方法能夠精確地恢複齣真實深度信息，提高虛擬視點圖像的繪製性能。
기우심도도상적회제시삼유시빈계통중적일항관건기술。연이，심도편마실진회대후속허의시점회제적성능산생겁대적영향。제출료일충면향허의시점회제적심도도상후처리방법，이용기우치신구간적교점규칙학정심도도상중매개상소점적려파창구，이용최소균방핍근다항식기술고계매개상소점적심도치，재이용가권모식려파기대고계적심도도상진행려파처리，득도심도려파도상。실험결과표명，해방법능구정학지회복출진실심도신식，제고허의시점도상적회제성능。
Depth image based rendering is one of the key technologies in three-dimensional system. However, coding distortion in depth map will affect the following performance of virtual view synthesis. In this paper, a depth map post-processing method is proposed for virtual view synthesis. In the method, the filtering window size for each pixel is established based on the intersection of confidence intervals rule. The depth value for each pixel within the filtering window is estimated by using least square polynomial approximation. A weighted mode filtering is applied to the estimated depth map, and the filtered depth map is obtained. Experimental results show that, the proposed method can accurately recover the depth information from the decoded depth map, and promote the performance of virtual view synthesis.
