IEEE Consumer Electronics Magazine - January/February 2022 - 22

Smart Omnidirectional Video Capturing
Figure 13. Camera images captured in experiment 1.
Figure 11. Positional relation of the hemispherical
cameras used in experiment 1.
Figure 14. Results of stitching the images in
Figure 14.
Figure 12. Hemispherical cameras attached to a
helmet for experiment 2.
Table 2. Image resolutions.
Hemispherical camera images
Omnidirectional panoramic
images
1440 pixels 1440
pixels
2880 pixels 1440
pixels
Figure 15. Closeup of the circle in the stitched
image.
distance and height difference between cameras
within this range.
In experiment 2, we attached the two hemispherical
cameras to a helmet (see Figure 12)
worn by a person, performed stitching, and then
captured omnidirectional images as the person
turned their head and walked.
We used the drone landing pad as the circular
object for detection in both experiments. The
distance from the cameras to the drone landing
pad was 4 m. Table 2 shows resolutions of the
captured hemispherical camera images and the
generated omnidirectional images.
Experiment Results
Figure 13 shows the environment for experiment
1. As these images show, the camera
22
displacement results in displacement of the
imaged person.
Figure 14 shows the results of stitching.
While differences in illumination resulted in differences
between the two images, stitching with
the drone landing pad in the center was clearly
realized. Figure 15 shows a closeup of the circle
in the stitched image.
This successful stitching demonstrates generation
of a panoramic image, which was the aim
of this article. Supplemental video 1 shows a
video created in experiment 1. Approximately
the first 4 s of the video shows processing for circle
detection and stitching, and the remainder
shows omnidirectional video capture.
Similarly, Figures. 16 and 17, respectively,
show images from before and after the stitching
IEEE Consumer Electronics Magazine

IEEE Consumer Electronics Magazine - January/February 2022

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