English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We propose a new paradigm for modelling and calibrating laser scanners withrotation symmetry, as is the case for Lidars or for galvanometric laser systemswith one or two rotating mirrors. Instead of bothering about the intrinsicparameters of a physical model, we use the geometric properties of the deviceto model it as a specific configuration of lines, which can be recovered by aline-data-driven procedure. Compared to universal data-driven methods thattrain general line models, our algebraic-geometric approach only requires a fewmeasurements. For example, a galvanometric laser scanner with two mirrors ismodelled as a grid of hyperboloids represented by a grid of 3x3 lines,providing a new type of lookup table: containing not more than 9 elements,lines rather than points, where we replace the approximating interpolation withexact affine combinations of lines. The proposed method is validated in arealistic virtual setting. As a collateral contribution, we present a robustalgorithm for fitting ruled surfaces of revolution on noisy line measurements.

On the angular control of rotating lasers by means of line calculus on hyperboloids