Errata to "Parallax Free Registration for Augmented Reality Optical See-Through Displays in the Peripersonal Space" [1] (DOI: 10.1109/TVCG.2020.3021534).

In the original article, there was a mistake in the content of Table 2 page 8 column 1 as published. The values of the mean and standard deviation of the virtual-to-real overlay error in visual angles, which are reported for different checkerboard distances, are to be corrected. Due to a typing error within the data analysis code, we mistakenly considered an erroneous value of the average angular resolution for the eye-replacement camera.

Corrigendum: Optical See-Through Head-Mounted Displays With Short Focal Distance: Conditions for Mitigating Parallax-Related Registration Error.

[This corrects the article DOI: 10.3389/frobt.2020.

Accuracy of the oscillometric method for the measurement of heart rate at rest and during mild exercise.

Objective: Whether oscillometric devices provide accurate measurements of heart rate (HR) is not known. Our aim was to determine the accuracy of an oscillometric device for the measurement of HR during rest and exercise.

Methods: The Microlife WatchBP O3, a monitor previously validated for blood pressure measurement, was tested in 36 individuals from the general population (mean age, 72.

Optical See-Through Head-Mounted Displays With Short Focal Distance: Conditions for Mitigating Parallax-Related Registration Error.

Optical see-through (OST) augmented reality head-mounted displays are quickly emerging as a key asset in several application fields but their ability to profitably assist high precision activities in the peripersonal space is still sub-optimal due to the calibration procedure required to properly model the user's viewpoint through the see-through display. In this work, we demonstrate the beneficial impact, on the parallax-related AR misregistration, of the use of optical see-through displays whose optical engines collimate the computer-generated image at a depth close to the fixation point of the user in the peripersonal space. To estimate the projection parameters of the OST display for a generic viewpoint position, our strategy relies on a dedicated parameterization of the virtual rendering camera based on a calibration routine that exploits photogrammetry techniques.

Accuracy of the WatchBP O3 device for ambulatory blood pressure monitoring according to the new criteria of the ISO81060-2 2018 protocol.

Objective: The aim of the study was to determine the accuracy of the Microlife WatchBP O3 monitor for ambulatory blood pressure (BP) measurement according to the new ISO81060-2 2018 protocol.

Methods: The WatchBP O3 was first tested in 97 subjects from the general population (mean age, 71.3 years; 48 men) using four cuffs of different sizes.