Panorama tags written by Google Photosphere. Specifies XMP properties that provide information regarding the creation and rendering of a panorama image.

• Exiv2 keys are Xmp.GPano.<Property>
• The schema namespace URI is http://ns.google.com/photos/1.0/panorama/
• The preferred schema namespace prefix is GPano

Reference: Photo Sphere XMP Metadata

Property	Label	Value type	Exiv2 type	Category	Description
UsePanoramaViewer	Use Panorama Viewer	Boolean	XmpText	External	Whether to show this image in a panorama viewer rather than as a normal flat image. This may be specified based on user preferences or by the stitching software. The application displaying or ingesting the image may choose to ignore this.
CaptureSoftware	Capture Software	Text	XmpText	External	If capture was done using an application on a mobile device, such as an Android phone, the name of the application that was used (such as "Photo Sphere"). This should be left blank if source images were captured manually, such as by using a DSLR on a tripod.
StitchingSoftware	Stitching Software	Text	XmpText	External	The software that was used to create the final panorama. This may sometimes be the same value as that of GPano:CaptureSoftware.
ProjectionType	Projection Type	Open Choice of Text	XmpText	External	Projection type used in the image file. Google products currently support the value equirectangular.
PoseHeadingDegrees	Pose Heading Degrees	Real	XmpText	External	Compass heading, measured in degrees, for the center the image. Value must be >= 0 and < 360.
PosePitchDegrees	Pose Pitch Degrees	Real	XmpText	External	Pitch, measured in degrees, for the center in the image. Value must be >= -90 and <= 90.
PoseRollDegrees	Pose Roll Degrees	Real	XmpText	External	Roll, measured in degrees, of the image where level with the horizon is 0. Value must be > -180 and <= 180.
InitialViewHeadingDegrees	Initial View Heading Degrees	Integer	XmpText	External	The heading angle of the initial view in degrees.
InitialViewPitchDegrees	Initial View Pitch Degrees	Integer	XmpText	External	The pitch angle of the initial view in degrees.
InitialViewRollDegrees	Initial View Roll Degrees	Integer	XmpText	External	The roll angle of the initial view in degrees.
InitialHorizontalFOVDegrees	Initial Horizontal FOV Degrees	Real	XmpText	External	The initial horizontal field of view that the viewer should display (in degrees). This is similar to a zoom level.
FirstPhotoDate	First Photo Date	Date	XmpText	External	Date and time for the first image created in the panorama.
LastPhotoDate	Last Photo Date	Date	XmpText	External	Date and time for the last image created in the panorama.
SourcePhotosCount	Source Photos Count	Integer	XmpText	External	Number of source images used to create the panorama
ExposureLockUsed	Exposure Lock Used	Boolean	XmpText	External	When individual source photographs were captured, whether or not the camera's exposure setting was locked.
CroppedAreaImageWidthPixels	Cropped Area Image Width Pixels	Integer	XmpText	External	Original width in pixels of the image (equal to the actual image's width for unedited images).
CroppedAreaImageHeightPixels	Cropped Area Image Height Pixels	Integer	XmpText	External	Original height in pixels of the image (equal to the actual image's height for unedited images).
FullPanoWidthPixels	Full Pano Width Pixels	Integer	XmpText	External	Original full panorama width from which the image was cropped. Or, if only a partial panorama was captured, this specifies the width of what the full panorama would have been.
FullPanoHeightPixels	Full Pano Height Pixels	Integer	XmpText	External	Original full panorama height from which the image was cropped. Or, if only a partial panorama was captured, this specifies the height of what the full panorama would have been.
CroppedAreaLeftPixels	Cropped Area Left Pixels	Integer	XmpText	External	Column where the left edge of the image was cropped from the full sized panorama.
CroppedAreaTopPixels	Cropped Area Top Pixels	Integer	XmpText	External	Row where the top edge of the image was cropped from the full sized panorama.
InitialCameraDolly	Initial Camera Dolly	Real	XmpText	External	This optional parameter moves the virtual camera position along the line of sight, away from the center of the photo sphere. A rear surface position is represented by the value -1.0, while a front surface position is represented by 1.0. For normal viewing, this parameter should be set to 0.