When using the viDoc RTK rover with an Android device or iOS device with a universal mount, the offsets between the antenna and the camera should be set to have precise measurements. Entering these offsets allows PIX4Dcatch to accurately compute the locations received by the viDoc RTK rover with the content captured.
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There are well tested combination of devices and viDoc RTK rovers, where there is no need to measure the offset. PIX4Dcatch will automatically fill the fields with correct offset values.
|Smartphone model of viDoc RTK rover||Tablet model of viDoc RTK rover|
|iPhone 14 Pro Max
iPhone 14 Pro
iPhone 13 Pro Max
iPhone 13 Pro
iPhone 12 Pro Max
iPhone 12 Pro
iPhone 11 Pro Max
iPhone 11 Pro
iPad Pro 11
|iPad Pro 11|
Mounted device illustrating the orientation of axes to measure.
Mount the device to the viDoc RTK rover using the appropriate SP-connect case. Phone cases can be purchased separately from the SP-connect website. The SP-connect universal phone mount can be used if the custom model is unavailable. SP-connect cases are also available in most bicycle and motorcycle shops.
Place the device in landscape mode and the display to the front. Notate the orientation of the x, y, and z axes and how they relate to the point of origin on the antenna to measure from. The point of origin resides in the middle of the screw mount at the base of the antenna. It will also be necessary to determine which lens to measure from for devices with multiple camera lenses.
For more information: Mounting a device to the viDoc RTK rover.
Measure and notate the value from the antenna base to the center of the lens along the axis for the x-axis offset.
Diagram: How to measure the x-axis.
Measure and notate the value from the center of the antenna to the center of the lens along the axis for the y-axis offset.
Diagram: How to measure the y-axis.
Measure and notate the depth from the center of the antenna to the center of the lens for the z-axis offset.
Diagram: How to measure the z-axis.
With the camera offsets properly measured and notated, they can be input into their appropriate Camera Offset Values (Centimeters/Inches) field of the RTK Device Settings dialog. Depending on the region set in the device, centimeters or inches will be the measurement system used for input.
RTK Device Settings dialog for iOS and Android.
The camera's offset has been properly set with the populated Camera Offset Values (Centimeters/Inches) field. Continue with the RTK Device Settings dialog to complete the viDoc RTK connection to the device.
For more information: How to use Pix4Dcatch with viDoc RTK rover.