Distance from Scalebar

[gatsri]

Hi

My goal is to monitor a distance between two targets:

I would like to set a image scale with two targets groups (Targets A,B,C & X,Y,Z), give them a scale with some specific scalebar distances (A-B, A-C, B-C and X-Y,X-Z,Y-Z).
then need to estimate the distance between target A-X.

Is there a possibility to do that in PhotoScan with only one Image?
See following sketch

[SAV]

Hi gatsri,

Not possible with only one image.

However, you could follow a different workflow (not including PhotoScan)
1. Correct for lens distortion (e.g., Photoshop: FILTER > LENS CORRECTION)
2. Use the undistorted image to measure the distance between known targets using the ruler function in Photoshop (will give you a pixel measurement)
3. Calculate 'scale' by using your pixel measurements and comparing them to your real world measurements (e.g., 100 pixel in image = 2 cm in the real world).
4. Measure pixel distance between A and X and then convert into real world length

Regards,
SAV