TY - GEN
T1 - A Speckle Noise Suppression Method Based on Quality Map
AU - Zhong, Chengxin
AU - Kong, Chao
AU - Zhang, Chaolong
AU - Xu, Yuanping
AU - Xu, Zhijie
AU - Li, Tukun
AU - Jin, Jin
AU - Wen, Qin
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Digital holography is a technique for measuring the shape of an object in 3D. It uses interference patterns generated by a laser or other light source, which record both the phase and intensity information of the light reflected from the surface of the object. This information is then encoded into digital holograms and reconstructed using computational methods to produce a 3D shape of the object. In the process of digital holography measurement, due to the high coherence of the laser, a large amount of speckle noise is generated when measuring rough surfaces due to diffuse reflection, leading to errors in the reconstruction results. Although traditional phase filtering has a good effect on noise filtering, it may cause distortion of normal phase. In order to suppress speckle noise, this study compared the common quality maps, proposed a local threshold adaptive speckle noise extraction method based on quality maps, and finally obtained the correct phase map by restoring the speckle noise points.
AB - Digital holography is a technique for measuring the shape of an object in 3D. It uses interference patterns generated by a laser or other light source, which record both the phase and intensity information of the light reflected from the surface of the object. This information is then encoded into digital holograms and reconstructed using computational methods to produce a 3D shape of the object. In the process of digital holography measurement, due to the high coherence of the laser, a large amount of speckle noise is generated when measuring rough surfaces due to diffuse reflection, leading to errors in the reconstruction results. Although traditional phase filtering has a good effect on noise filtering, it may cause distortion of normal phase. In order to suppress speckle noise, this study compared the common quality maps, proposed a local threshold adaptive speckle noise extraction method based on quality maps, and finally obtained the correct phase map by restoring the speckle noise points.
KW - digital holography
KW - Local adaptive thresholding
KW - phase unwrapping
KW - quality map
KW - speckle noise
UR - http://www.scopus.com/inward/record.url?scp=85175565859&partnerID=8YFLogxK
U2 - 10.1109/ICAC57885.2023.10275243
DO - 10.1109/ICAC57885.2023.10275243
M3 - Conference Proceeding
AN - SCOPUS:85175565859
T3 - ICAC 2023 - 28th International Conference on Automation and Computing
BT - ICAC 2023 - 28th International Conference on Automation and Computing
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 28th International Conference on Automation and Computing, ICAC 2023
Y2 - 30 August 2023 through 1 September 2023
ER -