3D mapping of breast surface using digital fringe projection
2017
Optical sensing technique has inherited non-contact nature for generating 3D surface mapping where its application
ranges from MEMS component characterization, corrosion analysis, and vibration analysis. In particular, the digital
fringe projection is utilized for 3D mapping of objects through the illumination of structured light for medical application
extending from oral dental measurements, lower back deformation analysis, monitoring of scoliosis and 3D face
reconstruction for biometric identification. However, the usage of digital fringe projection for 3D mapping of human
breast is very minimal. Thus, this paper addresses the application of digital fringe projection for 3D mapping of breast
surface based on total non-contact nature. In this work, phase shift method is utilized to perform the 3D mapping. The
phase shifted fringe pattern are displayed through a digital projector onto the breast surface, and the distorted fringe
patterns are captured by a CCD camera. A phase map is produced, and phase unwrapping was executed to obtain the 3D
surface mapping of the breast. The surface height profile from 3D fringe projection was compared with the surface
height measured by a direct method using electronic digital vernier caliper. Preliminary results showed the feasibility of
digital fringe projection in providing a 3D mapping of breast and its application could be further extended for breast
carcinoma detection.
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