How to distinguish a spherical panorama from a simple one?

Question

JavaScript

Hello, please tell me how to distinguish a spherical panorama from a simple panorama by exif parameters? Is there any particular property or "approach" for such a definition? Thank you.

EXIF example:

{
  "Format": "JPEG (Joint Photographic Experts Group JFIF format)",
  "format": "JPEG",
  "Geometry": "6080x3040",
  "size": {
    "width": 6080,
    "height": 3040
  },
  "Class": "DirectClass",
  "Type": "true color",
  "Depth": "8 bits-per-pixel component",
  "depth": 8,
  "Channel Depths": {
    "Red": "8 bits",
    "Green": "8 bits",
    "Blue": "8 bits"
  },
  "Channel Statistics": {
    "Red": {
      "Minimum": "0.00 (0.0000)",
      "Maximum": "65535.00 (1.0000)",
      "Mean": "33837.53 (0.5163)",
      "Standard Deviation": "12015.74 (0.1833)"
    },
    "Green": {
      "Minimum": "0.00 (0.0000)",
      "Maximum": "65535.00 (1.0000)",
      "Mean": "30802.32 (0.4700)",
      "Standard Deviation": "13972.98 (0.2132)"
    },
    "Blue": {
      "Minimum": "0.00 (0.0000)",
      "Maximum": "65535.00 (1.0000)",
      "Mean": "27812.60 (0.4244)",
      "Standard Deviation": "15809.30 (0.2412)"
    }
  },
  "Filesize": "596.3Ki",
  "Interlace": "No",
  "Orientation": "Unknown",
  "Background Color": "white",
  "Border Color": "#DFDFDF",
  "Matte Color": "#BDBDBD",
  "Page geometry": "6080x3040+0+0",
  "Compose": "Over",
  "Dispose": "Undefined",
  "Iterations": "0",
  "Compression": "JPEG",
  "JPEG-Quality": "68",
  "JPEG-Colorspace": "2",
  "JPEG-Colorspace-Name": "RGB",
  "JPEG-Sampling-factors": "2x2,1x1,1x1",
  "Signature": "e2a1b78034675d588ffcfcd02eebc4f621f13e253275c34555cf0aba023cfbc6",
  "Profile-EXIF": {
    "Image Description": "IMG_20200229_161322_00_058.insp",
    "Make": "Arashi Vision",
    "Model": "Insta360 ONE X",
    "Software": "v1.18.27_build1",
    "Date Time": "2020:02:29 14:13:22",
    "Y Cb Cr Sub Sampling": "2",
    "Y Cb Cr Positioning": "1",
    "Exif Offset": "220",
    "Exposure Time": "40000/1000000",
    "F Number": "2/1",
    "Exposure Program": "2",
    "ISO Speed Ratings": "113",
    "0x8830": "3",
    "0x8833": "113",
    "Exif Version": "0230",
    "Date Time Original": "2020:02:29 14:13:22",
    "Date Time Digitized": "2020:02:29 14:13:22",
    "Components Configuration": "\\001\\002\\003\\000",
    "Compressed Bits Per Pixel": "3281587/2310400",
    "Shutter Speed Value": "0/0",
    "Aperture Value": "2/1",
    "Exposure Bias Value": "0/10",
    "Max Aperture Value": "2/1",
    "Subject Distance": "0/0",
    "Metering Mode": "2",
    "Light Source": "0",
    "Flash": "0",
    "Focal Length": "0/0",
    "User Comment": "\\000\\000\\000\\000\\000\\000\\000\\000",
    "Flash Pix Version": "\\000\\000\\000\\000",
    "Color Space": "65535",
    "Exif Image Width": "6080",
    "Exif Image Length": "3040",
    "Interoperability Offset": "942",
    "Exposure Index": "0/0",
    "Sensing Method": "0",
    "Custom Rendered": "0",
    "Exposure Mode": "0",
    "White Balance": "0",
    "Digital Zoom Ratio": "0/0",
    "Focal Length In35mm Film": "0",
    "Scene Capture Type": "0",
    "Gain Control": "0",
    "Contrast": "64",
    "Saturation": "64",
    "Sharpness": "0",
    "Device Setting Description": "\\000\\000\\000\\000",
    "Subject Distance Range": "0",
    "Image UniqueID": "23de47e2ae24df120000000000000000",
    "GPS Info": "912",
    "GPS Altitude Ref": "."
  },
  "Profile-XMP": "771 bytes",
  "Tainted": "False",
  "User Time": "0.170u",
  "Elapsed Time": "0m:0.167883s",
  "Pixels Per Second": "105.0Mi",
  "path": "/home/shturnev/Загрузки/360.jpg"
}

Answer 1

A spherical panorama should have an Exif XMP "ProjectionType=equirectangular" tag,
then Google and Facebook see it as a panorama and load the corresponding viewer.

Answer 2

not the fact that this is provided by the standard - the substring "panoram" does not occur there.
Google describes its XMP standard for spherical Street View images, where it does not provide for a cylindrical projection, only a spherical one.