WayPoint Mission within a building not around

[Eko]

I need to make a photogrammetry work "inside" a building (say a gallery) which is almost a square to rectangle in shape. Size of each wall is around 20-25 meters. The aim is to get the details of the walls. Is there a better way other than constructing a Circular WayPoints mission with camera set to zero degrees and the POIs are defined on the surfaces of the walls? (Note that, it is quite difficult to define a circle with a little radius, the flight speed, the overlaps etc.)

Is it possible to employ a Circular HyperLapse action? Thanks for your your advises.

 

[Cafguy]

Why not use a 3-D building scanner?

 

[Eko]

Why not use a 3-D building scanner?

don't have it.

 

[slup]

don't have it.

... is it the same for the GPS reception?

Waypoint missions rely on that.

 

[BossBob]

Surely it would be easier to set up a camera on a tripod in the centre of the room. Fix the focal length, then take pictures as you would for a panorama. If you’re being really clever you could mount the camera and lens so that the pivot of the tripod was at the entrance pupil of the lens so you’d remove any parallax errors.

 

[Felix le Chat]

don't have it.

iPhone 13 has a built-in lidar scanner. Failing that, you can do just as good a job with a regular camera - overlapping stills run through SFM (Structure From Motion) software like 3DF ZEPHYR... but you have to keep the camera a set and even distance from all four walls as you work round the interior space.

 

[Eko]

would be easier to set up a camera on a tripod

iPhone 13 has a built-in lidar scanner

Thank you for the feedback, I know that I have those options; but I would prefer doing something with the mini 4 pro.

What would you suggest if the are area of the gallery was far larger, requiring the use of a drone?

Your kind input and suggestions will be helpful. Thank you.

 

[Kilrah]

Manual flying. Most likely not going to have appropriate GPS reception for automated modes inside a hall.

 

[BossBob]

Make sure you have a really distinctively patterned floor so that the downward position sensors have something to recognise where they are.
Talk about making a job more difficult than it needs to be. Even an IPhone on a stand would be less complicated than flying a drone with no gps positioning indoors.

 

[Felix le Chat]

Thank you for the feedback, I know that I have those options; but I would prefer doing something with the mini 4 pro.

What would you suggest if the are area of the gallery was far larger, requiring the use of a drone?

Your kind input and suggestions will be helpful. Thank you.

Using a drone or not is entirely your choice, but as already pointed out: no GPS (or very sporadic locks) means your flight stability is compromised... which includes the hover height if the VPS sensors can't clearly identify the floor surface.

If you're trying to shoot a pano of each wall, you need a set distance from the target surface and a stable, set height off the floor.

One job I was commissioned for was a very high definition orthomosaic-type shot of a highly decorated early Jacobean ceiling (1609)... at that time I had a choice between a Parrot Anafi or a good quality 20mp DSLR. Common sense prevailed and I got the overlap shots safely using the DSLR lying lens-up on a skateboard (triggered by WiFi phone app).

 

[Eko]

Thank you for the input, but I regret that I forgot to say there is no ceiling, so the hall is made up of just 4 walls and you can see the clear sky when you look upward. So things are easier I guess. Because GPS reception will not be lost.

Given this info, would you still insist on a DSLR solution? Even if the easy preference would be a DSLR, I am seeking for suggestions using a Mini 4 Pro. (Suppose it is the only device we have)

 

[Meta4]

Thank you for the input, but I regret that I forgot to say there is no ceiling, so the hall is made up of just 4 walls and you can see the clear sky when you look upward. So things are easier I guess. Because GPS reception will not be lost.

Have you tested this or are you guessing?
What are the walls made of, how high are they?

 

[Felix le Chat]

Thank you for the input, but I regret that I forgot to say there is no ceiling, so the hall is made up of just 4 walls and you can see the clear sky when you look upward. So things are easier I guess. Because GPS reception will not be lost.

Given this info, would you still insist on a DSLR solution? Even if the easy preference would be a DSLR, I am seeking for suggestions using a Mini 4 Pro. (Suppose it is the only device we have)

... with a partially tumbledown entrance arch? I recall exchanging comments about this in a post you created about six months ago.

If you have a relatively recent mobile phone: you have a good quality still & video camera that you can use to do this kind of job more than adequately. Any bog-standard Bridge or DSLR camera will do the same.

In the previous exchange: I set out the methodology I've used quite a few times to achieve acceptable results both using a drone, and not using a drone.

You're set on using your drone (which is the more difficult option), so best of luck.

Bear in mind that what you're intending to shoot is a heritage asset, checking that you have carte blanche to use a drone in or around that asset might be a good move.

Even if you do have necessary permissions, you still need to mitigate against the possibility that the drone might come into contact with internal surfaces.