An Iterative Joint Bilateral Filtering for Depth Refinement of a 3D Model

彬彬

1 Introduction

Time-of-Flight (TOF) sensor is an acquisition device that can capture

the range data using an infrared pulse in real-time; however,

it is unsuitable to perform fine 3D scanning due to sensing limitations

such as low depth resolution and severe random noise. The

depth measurements between adjacent regions are not distinct so

that the reconstructed geometry often fails to express the details of

an original shape. To perform noise removal without a loss of details,

an edge-preserving filter by [Tomasi and Manduchi 1998]]

has been adopted. The joint bilateral filter [J. Kopf 2007] is also

used since it provides a better performance when additional information

such as a high resolution image is available. However, the

quality of acquired depth data needs more improvement to generate

a more precise 3D model. In this research, an iterative algorithm

is proposed based on the coarse-to-fine strategy to refine the depth

information acquired from TOF sensor. Our method focuses on the

reconstruction of 3D geometry from the measured depth map and

color images. Our method outperforms other filtering techniques in

noise reduction and the refinement of raw data.

2 Iterative joint bilateral filtering

The proposed algorithm refines the given depth map using two

steps. First, multi-scale images of an input depth map are generated

at user-specified levels using the Gaussian pyramid. It scales

down an image using the Gaussian kernel, which is equivalent to a

hierarchical low-pass filtering. In this step, a more reliable depth

distribution is obtained from the lowest scale depth map since the

noise and erroneous values are removed as shown in Figure

奇

得得失失平常事，是是非非任由之，恩恩怨怨心不愧，冷冷暖暖我自知，坎坎坷坷人生路，曲曲折折事业梯，凡事不必太在意，愿你一生好运气！

奇

精典，学习了！

奇

我就看看，我不说话

奇

不错哦,顶一下......

奇

加精、加亮滴铁子，尤其要多丁页丁页

C.R.CAN

好`我顶``顶顶

铁锹 3D打印店铺

最早的"裸眼3D"_1965年的3D电脑动画



900美元订制3D打印高跟鞋_潮流就是挥霍出来的




集成新模块需看市场需求_3D_IC是行业必然发展方向




新型虚拟现实视听设备亮相GC展获好评




塔塔科技借3D技术完成首次电动汽车可行性研究




GC2012消息：索尼避谈3D技术




3D打印汽车及配件_制造业的新技术革命将启？

奇

百度的叫度娘，网易的叫易娘，新浪内部还在为是叫新娘还是浪娘而争论不休！……不管你们是企鹅的额娘，豆瓣的伴娘，还是华为的伪娘，都要记得，淘宝才是你们的亲娘啊！亲！！

C.R.CAN

你们都躲开，我来顶