You can make 360 panoramic photo's with your phone, a 360˚ camera or stitch them from multiple photo's. The pano's can be spherical or cylindric.
Make sure the resolution of the panos is enough to see and 'label' the lengths you want to measure.
Make sure 'your panos' are properly vertical aligned. This means that vertical lines in the 360˚ photo should be as vertical as possible.
Make sure you are aware about the camera height, the distance between the pano's or a reference length. The more accurate the better.
Port the pano's to your desktop/laptop.
Start using PaMe Light
Drag your 'pano 1' in the left 'DropZone' and your 'pano 2' in the right 'Drop Zone'.
Make a 'Protocol' choice and click submit
Fill in, depending on the choosen protocol:
- The distance between the pano's
- The camera height above the ground (no paralax point)
- The reference length
... and click submit
Look with pano 1 (left) to the camera position of pano 2.
Look with pano 2 (right) to the same distance point as pano 1.
When done, click 'Proceed'.
Now it depends on the choices you made what will happen.
If your choice was: Known distance between camera's you can start measuring. (see below)
If your choice was: Known Camera height You need to click in both panos on a corresponding place between the pano's, but NOT ON the line between the panos/camera's. Blue dot's will appear. You can drag the spots. When finished click 'DONE'.
If your choice was: Known length You need to first click on both sides of the known length in both panos. Yellow and green dots will appear. You can drag the spots. When finished click 'DONE'.
You can start measuring now.
We are going to measuring a length. Because of that we need the outside positions of the 'length'/distance.
Find the object or 'length' in pano 1 and click on the most outer left (or right) side. A red dot appears which is also draggable for replacement. You can also go fullscreen, rightbottom of the pano 'box', for more accuracy. Now click on the otherside of the 'length'. A white dot appears.
Do the same in pano 2 and make sure the position of the red and white dots correspondent.
Now click calculate distance. The page will show the distance you measured.
Besides the length you will also get the distances between the panos and the dots.
Instruction will also be shown inside the tool.
ALIGN THE PANOS
This picture shows the accuracy 'areas'.
Don't try to measure in the red area ( Aproximately 5˚ ). The accuracy can be bad. In the yellow area the accuracy could be not ideal. Make sure that for high accuracy the length to be measure is between the panos.
Also measuring close to the zenith or nadir (straight up or down) is not recommended.
Also be carefull with small/little parallax positions and angles.
Angle 'A' can be too small to do a proper measurement in some cases. A warning alert will show.
The PaMe tool seems to be very accurate. Be as precise as possible.
If you find problems, bugs or have questions, don't hesitate and send me an Email.