PDI image of HD 163296 from this paper compared to other works. The cyan dashed line indicates the peak intensity of the ring detected in scattered light by Garufi et al. (2014) and shown in the inset image. The violet solid line lies at the CO snowline (Qi et al. 2015) taking into account the disk inclination and keeping the star in the center. The green dotted lines are obtained similarly from the peak intensity of the two innermost rings revealed at 1.3 mm by Isella et al. (2016). The star is at the center of the gray circle. North is up, east is left.