基于轮廓的kinect深度图像的空洞填补  

KINECT DEPTH IMAGE HOLE FILLING BASED ON CONTOUR

作　　者：操宣鹏 陈一民[1] 

机构地区：[1]上海大学计算机工程与科学学院,上海200444

出　　处：《计算机应用与软件》2016年第5期189-191,238,共4页Computer Applications and Software

基　　金：国家科技支撑计划课题(2006BAK13B10);上海市科委基金项目(12510708400);上海市国际合作基金项目(09510700900)

摘　　要：针对Kinect获得深度图噪声的特点,以及现有去噪算法存在的问题,提出一种基于轮廓的自适应非对称高斯滤波方法。该方法针对Kinect能够同时获得深度图像和彩色图像的特点,利用彩色图找到场景中物体的轮廓;在对深度图进行填补时,利用轮廓选取合适的有效点;选取的有效点是非对称的,所以需要改变高斯滤波的对称性;另外,改变高斯滤波的尺度,使其随着被填补区域深度值的变化而变化,使得高斯滤波具有自适应特性。通过实验对比,表明该方法能准确地填补深度图的空洞,同时还能很好地保护图像中边缘信息。For the noise characteristics of depth map obtained by Kinect and the problems of existing denoising algorithm,we presented a contour-based adaptive asymmetric Gaussian filtering methods（ OAAG）. This method,aiming at the characteristic of Kinect that it can obtain the depth image and colour image simultaneously,uses colour image to find objects＇ contour in the scene. When filling the depth,it selects the appropriate points with contour. Since the selected points are asymmetric,so it needs to change the symmetry of Gaussian filtering.Moreover,it changes the scale of Gaussian filtering to make it vary along with the changes of depth value of the area to be filled,this enables the Gaussian filtering to be adaptive. It is demonstrated through experimental comparison that the method can accurately fill the hole of depth image,and meanwhile it can well protect the edge information of image as well.

关 键 词：深度图 空洞 轮廓 自适应 非对称 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]