Depth extraction method with subpixel matching for light‐coding‐based depth camera. Issue 10 (1st October 2018)

• Record Type: Journal Article
• Authors: Pan, Yu; Liu, Rongke; Du, Qiuchen
• Is Part Of: IET image processing. Volume 12:Issue 10(2018)
• Page Start: 1703
• Page End: 1712
• Publication Date: 2018-10-01
• Subjects: feature extraction -- image reconstruction -- cameras -- interpolation -- image matching -- image coding -- image retrieval; light‐coding‐based depth cameras -- retrieved depth accuracy -- three‐dimensional scene reconstruction -- nearest neighbour interpolation -- subpixel image matching -- depth image extraction method; Image processing -- Periodicals; 621.36705
• DOI: 10.1049/iet-ipr.2016.0567
• Languages: English
• ISSNs: 1751-9659

Abstract

Abstract : Depth images extracted by light‐coding‐based depth cameras are widely used to reconstruct three‐dimensional scenes in recent years. However, the retrieved depth accuracy greatly influences the reconstruction quality. Here, the authors present an appropriate depth extraction method based on subpixel matching to improve the depth accuracy. The proposed method utilises nearest neighbour interpolation to the projector's image plane to obtain depth values at subpixel accuracy, thereby better preserving the important depth information without changing any inner structure of the depth camera. Experimental results show that the proposed method improves the depth images both on image quality and depth accuracy.