Micro-tomography via single-pixel imaging.

Area of Science:

• Optics and Photonics
• Imaging Science

Background:

• Tomographic imaging provides cross-sectional views, while single-pixel imaging lacks spatial resolution.
• Existing methods often require mechanical scanning, limiting speed and complexity.

Purpose of the Study:

• To develop a compact tomographic imaging system integrating single-pixel imaging.
• To achieve 3D imaging without mechanical specimen manipulation.

Main Methods:

• Utilized a digital micromirror device (DMD) to encode spatial information.
• Employed an array of single-pixel detectors to capture light signals from multiple angles.
• Reconstructed tomographic images from unique perspective angles recorded by each detector.

Main Results:

• Successfully retrieved specimen images from unique perspectives using single-pixel detectors.
• Achieved tomographic imaging capabilities, including intensity image refocusing and 3D differential-phase-contrast imaging.
• Demonstrated simultaneous micro-tomographic image acquisition (384x384 pixels) with a compact 5x6 array of single-pixel detectors.

Conclusions:

• The proposed system enables efficient and compact 3D tomographic imaging without mechanical scanning.
• The method's compatibility with broad operational spectra makes it suitable for non-visible light imaging (e.g., terahertz, X-ray).
• This technique holds significant potential for advancements in life sciences and engineering applications.