Evaluation Summary:
Mahalingam et al. report on a new software suite, ASAP, the assembly stitching and alignment pipeline, capable of montaging and aligning serial sections at a speed leading to total time shorter than image acquisition time. The software applies to both electron microscopy and array tomography, and more generally to any data set consisting of collections of 2D images in need of in-section montaging and cross-section registration. The result is a coarsely registered volume, ready for refining with existing software suits such as SEAMLESS by Macrina et al. (2021) towards subsequent processing, such as image segmentation and neuronal arbor reconstruction for cellular connectomics. This paper will be of special interest to researchers within the field of connectomics, but also to the broad class of scientists who perform large-scale microscopy. The establishment of fast, reliable and scalable image alignment software to process the millions of images produced by modern microscopes at the same speed as they are acquired is key to accelerate research in neuroscience and other fields. The key claims of the manuscript are well supported by the data, and the approaches used are thoughtful and rigorous.
(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1, Reviewer #2 and Reviewer #3 agreed to share their name with the authors.)