3-DIMENSIONAL FACE PROFILE RECONSTRUCTION STUDY USING DIGITAL FRINGE PROFILOMETRY METHOD

• Main Author: EKAPUTRA WISESA (NIM : 13311033); RYAN MUHAMMAD KHAWARIZMI (NIM : 13311082) , ALVIN
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/19860
• Institution: Institut Teknologi Bandung

Face is a part of human body that can distinguish each individual by identification. Identification occurs because it has unique profile that consist from various part that are different. Measurement and reconstruction of face profile is commonly used for biometric and antropometric applications. Laser scanning is a <br /> <br /> <br /> reconstruction method for face profile that has high accuracy and widely used. By this research, an alternative method is developed for 3-dimensional face profile reconstruction using digital fringe profilometry. Digital fringe profilometry is a measurement and reconstruction system using projected structured light to the object. Digital fringe profilometry use deformed phase on the object as the measured information for reconstruction. In this <br /> <br /> <br /> research, the system consist of a Digital Light Processing (DLP) projector for fringe pattern projection and a digital camera for capturing object images. Phase <br /> <br /> <br /> are extracted for captured object images using 4-step Phase Shifting Interferometry (PSI) technique. Images are processed by denoising it using PEARLS method and by phase unwrapping using global unwrapping PUMA method. Finally, phase from the reconstructed profile are converted into depth on metric scale. Initial test are performed to examine the system configuration for various 3-dimensional object using various fringe pattern frequencies. Results on the initial test indicates the configuration can reconstruct various 3-dimensional object with the optimum frequency chosen is 7 cycle/100 pixel. Implementation on human face profile are done to 2 test subjects with measured area on the nose. Nose depth accuracy measurement reaches 90% and 88% for each test subjects. Qualitative analysis of the reconstruction are done to evaluate proportion with the shape of the real face. By quantitive and qualitative analysis, digital fringe profilometry technique has a great potential to be used as a method for measuring and <br /> <br /> <br /> reconstructing the profile of the face with 3-dimensional shape.