Can you guess sizes in this photo?

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  08 August 2008
Question Can you guess sizes in this photo?

Hi, there
I'm gonna model this meeting room but I have problem on figuring out the size of doors and room.
I assumed the the room to 12m*8m*3m meters and the size of every single door 80cm*200cm but it looks to narrow and doesn't match the proportions.
I'll highly appreciate you help.
Discover Muslims Great Contribution to Science and Technology
  08 August 2008
Here is a shot from my scene
I increased the height of the ceiling to 3.5m and the door width to .9m but the result is still frustrating

Oops. sorry! Here is the photo
Attached Images
File Type: jpg layout.jpg (67.1 KB, 34 views)
File Type: jpg tour_conference_room_large.jpg (93.7 KB, 42 views)
Discover Muslims Great Contribution to Science and Technology

Last edited by A-Boy-From-Heaven : 08 August 2008 at 05:58 AM.
  08 August 2008
Errr..., and where is the photo?
Fernando Ferro
  08 August 2008
i guess you might need to work with your camera setting ( i dont remember exactly but it 's something about focus length or angle of view ...) try tweaking some setting in your camera.
cheer !
  08 August 2008
You cannot guess if you don't know any real measure in the scene, too many unknowns.
There are a way to calculate the FOV in this kind of scenes (a lot of poligonal objects with parallel and perpendicular sides).
People who deal with architectural renderings have to do similar things every time.
Do you know the characteristics of the real camera? (35 MM, digiltal ?)
Fernando Ferro
  08 August 2008
A typical door is about 80" tall (6 1/2 feet), though this one looks more like 86". I'd also guess that they're three feet wide. Typical seat height is 18" (the part you actually sit on). If you assume this room uses typical sizes and you are familiar with the rules of perspective, you can draw some lines over the picture to find the height of the various elements. Also, once you figure out where the horizion line goes, you can find the eye height. Every point along the horizon is at the same height as the camera.

The image is tilted a little, and it looks like there is a little pincushion distortion going on as well. Here's a start, though the horizon is pretty approximate since there wasn't much to go by except estimating where parallel lines were converging:

The lamps look like they could be helpful in finding what the lengths are in perspective since they give you a square to work with.
  08 August 2008
Thanks a lot guys
That was really helpful.
I think the camera lens was something around 22. This was the size that matched the ref. image the best.
Discover Muslims Great Contribution to Science and Technology
  08 August 2008
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