2020

ScanSSD: Scanning Single Shot Detector for Mathematical Formulas in PDF Document Images

Mali, Parag, Kukkadapu, Puneeth, Mahdavi, Mahshad et al.

Understand

We introduce the Scanning Single Shot Detector (ScanSSD) for locating math formulas offset from text and embedded in textlines.

  • ScanSSD uses only visual features for detection: no formatting or typesetting information such as layout, font, or character labels are employed.
  • Given a 600 dpi document page image, a Single Shot Detector (SSD) locates formulas at multiple scales using sliding windows, after which candidate detections are pooled to obtain page-level results.
  • For our experiments we use the TFD-ICDAR2019v2 dataset, a modification of the GTDB scanned math article collection.

Reading the bibliography…