Interlaced scan patterns based on progressive hexagonal grids

TL;DR

This paper introduces two novel interlaced hexagonal grid methods for scanning images, enabling faster acquisition and higher resolution while maintaining optimal sampling, beneficial for real-time imaging and minimizing subject damage.

Contribution

It presents new interlacing techniques for hexagonal grids that allow early full-field imaging and resolution enhancement in scanning-mode image acquisition.

Findings

Enables early full field-of-view imaging.

Achieves resolution doubling.

Maintains optimal sampling of band-limited signals.

Abstract

Progressive acquisition of slowly-scanned images is desirable for drift correction and real-time visualization. Interlacing methods are common approaches to storing and transmitting data on rectilinear grids, and here we propose using them for acquisition in scanning-mode image modalities. Especially in these cases, it is essential to make optimal use of sample points to speed up the scan and reduce damage to the subject. It has long been known that optimal sampling of band-limited signals is achieved using hexagonal scanning grids. In this note, we demonstrate two new methods for interlacing hexagonal grids, which enable early full field-of-view imaging with optimal sampling and resolution doubling.