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Related Experiment Video

Updated: Jul 24, 2025

Using Synchrotron Radiation Microtomography to Investigate Multi-scale Three-dimensional Microelectronic Packages
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A fast tomosynthesis method for printed circuit boards based on a multiple multi-resolution reconstruction algorithm.

Hui Tang1, Tian Li1, Yu Bing Lin1

  • 1Laboratory of Image Science and Technology, School of Computer Science and Engineering, Southeast University, Nanjing, China.

Journal of X-Ray Science and Technology
|July 10, 2023
PubMed
Summary
This summary is machine-generated.

A new multiple multi-resolution algorithm significantly speeds up digital tomosynthesis (DTS) for printed circuit board (PCB) nondestructive testing. This faster method achieves 6.5x speed improvement without sacrificing reconstruction quality.

Keywords:
LeNetMulti-resolutionPCBiterative image reconstructiontomosynthesis

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Area of Science:

  • Nondestructive testing
  • Image reconstruction
  • Digital imaging

Background:

  • Digital tomosynthesis (DTS) offers high resolution for printed circuit board (PCB) inspection.
  • Traditional DTS iterative algorithms are computationally intensive, limiting real-time applications.
  • Processing large volumes of high-resolution data remains a challenge.

Purpose of the Study:

  • To develop a computationally efficient algorithm for high-resolution DTS reconstruction of PCBs.
  • To accelerate the real-time processing of large-volume DTS data.
  • To maintain image quality while improving reconstruction speed.

Main Methods:

  • Proposed a multiple multi-resolution algorithm combining volume and projection domain strategies.
  • Utilized a LeNet-based network for region of interest (ROI) identification in the volume domain.
  • Implemented projection subsets to reduce redundancy in the projection domain.

Main Results:

  • The proposed algorithm achieved approximately 6.5 times faster reconstruction than the full-resolution method.
  • Image reconstruction quality was preserved.
  • Demonstrated effectiveness on both simulated and real PCB data.

Conclusions:

  • The multiple multi-resolution algorithm offers a significant speed-up for DTS reconstruction of PCBs.
  • This approach enables faster, real-time nondestructive testing of PCBs.
  • The method effectively balances computational efficiency and image fidelity.