I'm exporting data out of Google Earth Studio using the JSON format. I would like to import this data into a 3D app, like maya or houdini. The question I have is specifically about camera orientation. I can't seem to corelate the camera xyz rotation data I see in the JSON file to the pan tilt values that I set in Google Earth Studio. For instance from the interface, here are the camera settings: cam lon= 0 cam lat= 33.9165151812 cam alt = 1725 m cam pan = 0 (looking straight) cam tilt = 0 (pointing nadir) That gets turned into the following rotation vector: rx=180 | ry=-56.0834848188 | rz=-89.9999999998 Note I'm using python do interpret this data. Ideally, I'd like to reverse-engineer these rx,ry,rz angles to get back pan/tilt/roll values that I can then use in my 3d software. Any tips you might have would be appreciated. Below is an outline of what I've done so far: lat = camdata["cameraFrames"][f]["coordinate"]["latitude"] lon = camdata["cameraFrames"][f]["coordinate"]["longitude"] alt = camdata["cameraFrames"][f]["coordinate"]["altitude"] xEcef,yEcef,zEcef = geodetic_to_ecef(lat, lon, alt) # get earth-centered, earth-fixed coords xEast, yNorth, zUp = ecef_to_enu(xEcef,yEcef,zEcef,lat0,lon0,alt0) # get local east, north up coords relative to a reference lat0,lon0,alt0 # express in y-up coords txmod = xEast tzmod = -yNorth tymod = zUp rx = camdata["cameraFrames"][f]["rotation"]["x"] ry = camdata["cameraFrames"][f]["rotation"]["y"] rz = camdata["cameraFrames"][f]["rotation"]["z"] # now I have to use these rotations in conjunction with the camera's lat,lon, alt # to get back pan/tilt/roll values Continue reading...
