TY - GEN
T1 - Superpixel-based depth image super-resolution
AU - Soh, Yongseok
AU - Sim, Jae Young
AU - Kim, Chang-Su
AU - Lee, Sang Uk
PY - 2012
Y1 - 2012
N2 - Due to the development of depth sensors, such as time-of-flight (ToF) cameras, it becomes easier to acquire depth information directly from a scene. Although such devices enable us to obtain depth maps at video frame rates, the depth maps often have low resolutions only. A typical ToF camera retrieves depth maps of resolution 320 × 200, which is much lower than the resolutions of high definition color images. In this work, we propose a depth image super-resolution algorithm, which operates robustly even when there is a large resolution gap between a depth image and a reference color image. To prevent edge smoothing artifacts, which are the main drawback of conventional techniques, we adopt a superpixel-based approach and develop an edge enhancing scheme. Simulation results demonstrate that the proposed algorithm aligns the edges of a depth map to accurately coincide with those of a high resolution color image.
AB - Due to the development of depth sensors, such as time-of-flight (ToF) cameras, it becomes easier to acquire depth information directly from a scene. Although such devices enable us to obtain depth maps at video frame rates, the depth maps often have low resolutions only. A typical ToF camera retrieves depth maps of resolution 320 × 200, which is much lower than the resolutions of high definition color images. In this work, we propose a depth image super-resolution algorithm, which operates robustly even when there is a large resolution gap between a depth image and a reference color image. To prevent edge smoothing artifacts, which are the main drawback of conventional techniques, we adopt a superpixel-based approach and develop an edge enhancing scheme. Simulation results demonstrate that the proposed algorithm aligns the edges of a depth map to accurately coincide with those of a high resolution color image.
KW - Depth image
KW - Depth map super-resolution
KW - Image interpolation
KW - Superpixel
UR - http://www.scopus.com/inward/record.url?scp=84861925561&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84861925561&partnerID=8YFLogxK
U2 - 10.1117/12.909848
DO - 10.1117/12.909848
M3 - Conference contribution
AN - SCOPUS:84861925561
SN - 9780819489371
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Proceedings of SPIE-IS and T Electronic Imaging - Three-Dimensional Image Processing (3DIP) and Applications II
T2 - 3-Dimensional Image Processing (3DIP) and Applications II
Y2 - 24 January 2012 through 26 January 2012
ER -