VR360 Hemispherical to Equirectangular¶
Descrizione
This effect/filter converts a video frame with two hemispherical images to a single equirectangular frame.
The plugin assumes that both hemispheres are in the frame. If you have a camera like the Garmin Virb360 that produces two videos, one from each camera, you should start by converting them to a single movie by placing them side by side using, for example, ffmpeg (you can also add parameters to produce lossless, intra-only output here for easier editing):
ffmpeg \
-i left.mp4 \
-i right.mp4 \
-filter_complex hstack \
output.mp4
Parametri
Parametro |
Valore |
Descrizione |
---|---|---|
Proiezione |
Selezione |
The fisheye projection type |
Interpolazione |
Selezione |
Determines the sampling method |
Alignment Yaw / Pitch / Roll |
Intero |
Adjust the rotation along the Z- (yaw), X- (pitch) and Y-axis (roll) to compensate for any alignment differences |
Lens FOV |
Intero |
Field of View of a single hemisphere in degrees |
Lens Radius |
Virgola mobile |
Radius of the image circle as a fraction of the frame width (for example 0.25 = 25% of 1920) |
Front X / Y |
Virgola mobile |
Defines the center of the image of the front-facing camera. X is expressed as a fraction of the image width, Y as a fraction of the image height. |
Front UP |
Intero |
Defines the «up» direction in the image in degrees counting clockwise from a directions towards the top edge |
Back X / Y |
Virgola mobile |
Defines the center of the image of the back-facing camera. X is expressed as a fraction of the image width, Y as a fraction of the image height. |
Back UP |
Intero |
Defines the «up» direction in the image in degrees counting clockwise from a directions towards the top edge |
Nadir Radius / Start |
Virgola mobile |
Adjust the nadir of the camera if you have parts of the camera or equipment in the image |
Sono disponibili le seguenti voci di selezione:
Projection
Equidistant Fisheye |
predefinito |
Interpolazione
Più vicino |
predefinito |
Bilineare |