3D Profile Reconstruction of Solder Paste Based on Phase Shift Profilometry

Phase profilometry is an effective and efficient way to reconstruct 3D profile of objects through an optical method. It requires a pattern generator to project sinusoidal pattern onto objects. The deformed pattern is then captured by camera. However, noise from camera, distortion of lens, and imperfectness of projector cause trouble to the 3D profile reconstruction. It is necessary to filter the images before applying phase profilometry. In this paper, a 4-step phase shift profilometry (PSP) is used to reconstruct the 3D profile of solder paste. A 2D median and ID non-linear filters (pre-filtering) are proposed to filter the raw images. A 2D median and 2D non-linear filters (post-filtering) are used to filter out any parts which may be wrongly formed due to incorrect phase increment and non-ideal sinusoidal characteristic of projected pattern.

[1]  Tommy W. S. Chow,et al.  Neural computation approach for developing a 3D shape reconstruction model , 2001, IEEE Trans. Neural Networks.

[2]  Fu-Pen Chiang,et al.  High-speed phase-shifting profilometry , 2001, SPIE Optics East.

[3]  Shmuel Peleg,et al.  Nonlinear Multiresolution: A Shape-From-Shading Example , 1990, IEEE Trans. Pattern Anal. Mach. Intell..

[4]  Hiroaki Watabe,et al.  Nonlinear filters for multimedia applications , 1999, Proceedings 1999 International Conference on Image Processing (Cat. 99CH36348).

[5]  R. Storer,et al.  Critical variables of solder paste stencil printing for micro-BGA and fine-pitch QFP , 2004, IEEE Transactions on Electronics Packaging Manufacturing.

[6]  Alan M. McIvor,et al.  Accurate 3D measurement using a structured light system , 1998, Image Vis. Comput..

[7]  Fu-Pen Chiang,et al.  Color-encoded digital fringe projection technique for high-speed three-dimensional surface contouring , 1999 .

[8]  Ping-Sing Tsai,et al.  Shape from Shading: A Survey , 1999, IEEE Trans. Pattern Anal. Mach. Intell..

[9]  Peter Eisert,et al.  Automatic reconstruction of stationary 3-D objects from multiple uncalibrated camera views , 2000, IEEE Trans. Circuits Syst. Video Technol..

[10]  M. Breznan,et al.  Reconstruction of 3-D image from stereo pictures , 2005, 47th International Symposium ELMAR, 2005..

[11]  V. Srinivasan,et al.  Automated phase-measuring profilometry of 3-D diffuse objects. , 1984, Applied optics.

[12]  Jr. R.R. Lathrop.  Solder paste print qualification using laser triangulation , 1997 .

[13]  Jong-Soo Choi,et al.  3-D shape recovery of hybrid reflectance surface using indirect diffuse illumination , 1995, Proceedings., International Conference on Image Processing.

[14]  Kaoru Arakawa.  Nonlinear digital filters for beautifying facial images in multimedia systems , 2004, 2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512).

[15]  Xianyu Su,et al.  Study on Fourier transforms profilometry based on bi-color projecting , 2005 .

[16]  Alex Pentland,et al.  A simple algorithm for shape from shading , 1992, Proceedings 1992 IEEE Computer Society Conference on Computer Vision and Pattern Recognition.

[17]  Ieee Xplore,et al.  IEEE Transactions on Pattern Analysis and Machine Intelligence Information for Authors , 2022, IEEE Transactions on Pattern Analysis and Machine Intelligence.

[18]  Du-Ming Tsai,et al.  Full-field 3-D measurement of solder pastes using LCD-based phase shifting techniques , 2006 .

[19]  Chung-Hsien Kuo,et al.  Reconstructing the 3D solder paste surface model using image processing and artificial neural network , 2004, 2004 IEEE International Conference on Systems, Man and Cybernetics (IEEE Cat. No.04CH37583).

[20]  Reinhard Koch,et al.  3-D surface reconstruction from stereoscopic image sequences , 1995, Proceedings of IEEE International Conference on Computer Vision.

[21]  J.P. Lavelle,et al.  High speed 3D scanner with real-time 3D processing , 2004, ISA/IEEE Sensors for Industry Conference, 2004. Proceedings the.

[22]  Joseph P. Lavelle,et al.  High-speed 3D scanner with real-time 3D processing , 2004, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[23]  M. Takeda,et al.  Fourier transform profilometry for the automatic measurement of 3-D object shapes. , 1983, Applied optics.