NDLI: Depth Map Super-Resolution for Cost-Effective RGB-D Camera

Content Provider	IEEE Xplore Digital Library
Author	Takaoka, R. Hashimoto, N.
Copyright Year	2015
Description	Author affiliation: Dept. of Inf., Univ. of Electro-Commun., Chofu, Japan (Takaoka, R.; Hashimoto, N.)
Abstract	Recently, cost-effective RGB-D cameras measuring distance to target objects have been used in many fields. By using a depth camera equipped with the RGB-D camera, we can easily recognize depth and three-dimensional objects having difficulty in distinction only with RGB images. However, the depth cameras are low-resolution compared with the RGB cameras, and include measuring errors. Therefore, in this paper, we present a method to reduce the measurement errors of the depth camera and enhance the resolution of a depth map by using a high-resolution RGB camera image. Especially around object's contours, super-resolution depth maps are obtained by an interpolation process from the pixels that is selected by the color similarity and selection pixels stored reliable depth value. Then, we confirm that the depth maps are the same resolution as the RGB image, and are more similar to the objects shape indicates by the color image than only expanded depth map. Further, we confirm that result is improved by applying this approach to the application combined with high-resolution RGB image.
Starting Page	133
Ending Page	136
File Size	577752
Page Count	4
File Format	PDF
e-ISBN	9781467394031
DOI	10.1109/CW.2015.32
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-10-07
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cameras Image resolution Interpolation Image edge detection Reliability Image color analysis Three-dimensional displays Joint Bilateral Filter Depth Map Super-Resolution RGB-D Camera
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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