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Why is floor unleveled?

Many people ask us why the floor appears to be unlevel or why does it appear that most people are tilted to one side, when they were “sure” that they leveled the device with the lines turning “Green” before they took the picture.  Unfortunately, they fail to realize that our app can not account for y-axis rotation (axial) of the device or the subject or the camera itself which is on the side of the device is offset and not perpendicular to the client during taking the photos.  To compound this, there is evidence that people do have a tendency to have a ribcage shift based on being right handed.  

So during the photos, you may be ‘square’ to patient/client, BUT you and your client are OBLIQUE to the wall, or your device is slightly oblique to the client, or offset to the client.  The further you diverge in height from the camera lens, when oblique, it will ‘project’ or ‘show’ as a lateral bending.  THUS the floor un-level or baseboards etc.  So as long as you are square to patient, this is simply cosmetic.  However, if you are NOT and you are Oblique to patient and backdrop, then you have poor clinical data.  Being malpositioned with the device relative to the client either axially rotated or translated out of center (neither which can be controlled by the accelerometer controlled heads up display) can be noted by a total lateral flexion of the client (or floor board) relative to true vertical or the shoulders appearing laterally flexed (as an axial rotation will also project one side higher then the other). These are all physics of light perspective and photography (and even applies when taking x-rays as well).

So during photos, have the staff concentrate on the surroundings and look at the client and not just the “Heads Up Display”/ The device needs to be square to patient, and the camera itself needs to be in center and perpendicular to the client.  There is NO WAY to control for this motion with the accelerometers as the account for tipping (lateral bending) of device and tipping forward or backwards of the device.

Below you will find review of this as well as how to level the photos during importing if they are offset.

Video Tutorial:

How to level photos during import if slightly offset and un-level. This does not fix your problem per say, but makes it appear less prominent to true vertical or horizontal.

Video tutorial: