RV360 Semiesférica a equirrectangular¶

Descripción

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

Parámetros

Parámetro	Valor	Descripción
Proyección	Selección	The fisheye projection type. Currently only equidistant fisheyes, like the Ricoh Theta and Garmin Virb360 are supported.
Use sensor response parameters	Switch	Switch on to use sensor response parameters (see EMoR h(x) parameters below)
Interpolación	Selección	Determines the sampling method
Alineación alabeo / cabeceo / guiñada	Entero	Adjust the rotation along the Z- (yaw), X- (pitch) and Y-axis (roll) to compensate for any alignment differences
Campo de visión de la lente	Entero	Field of View of a single hemisphere in degrees
Radio de la lente	Decimal	Radius of the image circle as a fraction of the frame width (for example 0.25 = 25% of 1920)
Frontal X / Y	Decimal	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.
Frontal arriba	Entero	Defines the «up» direction in the image in degrees counting clockwise from a directions towards the top edge
Trasera X / Y	Decimal	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.
Trasera arriba	Entero	Defines the «up» direction in the image in degrees counting clockwise from a directions towards the top edge
Nadir radio / inicio	Decimal	Adjust the nadir of the camera if you have parts of the camera or equipment in the image
Lens distortion A / B / C	Decimal	Lens distortion correction parameters. The first three parameters are the same as in Hugin.
Lens distortion radius	Decimal	Lens distortion correction parameters. If you use Hugin parameters, the Radius should be set to the value of (0.5 * min(image width, image height) / image width). For a 2:1 aspect dual hemispherical image, that would be 0.25.
Lens vignetting A / B / C / D	Decimal	Lens vignetting correction parameters. The first four parameters are the same as in Hugin, corresponding to the V_a , V_b , V_c , and V_d image parameters.
Lens vignetting radius	Decimal	If you use Hugin parameters, the radius should be set to the value of (0.5 * image diagonal / image width). For a 2:1 aspect dual hemispherical image, that would be 0.5590. Use the `A` parameter to scale the effect and avoid overexposing highlights.
EMoR h(1 / 2 / 3 / 4 / 5)	Decimal	Sensor response parameters. The EMoR h(x) parameters are the same as Hugin”s R_a - R_e in the lens parameters. If you use Hugin-derived values for vignetting correction, you should also use these parameters, as Hugin”s vignetting correction assumes that the sensor response has been corrected.

The following selection items are available:

Proyección

Ojo de pez equidistante

Predeterminado

Interpolación

Más cercano	Predeterminado
Bilineal