How do I measure distances in an image?

Posted by Ram Bhat on Stack Overflow See other posts from Stack Overflow or by Ram Bhat
Published on 2010-05-21T16:41:42Z Indexed on 2010/05/21 17:10 UTC
Read the original article Hit count: 255

Filed under:

image-processing

|

photogrammetry

Let's say we have an image like so

alt text

Let's say we've already used filters and an edge detection algorithm in this pic. Now my goal is to measure distances (NOT actual distances, distance can be in any arbitrary unit) . eg: How do I find the length of the hall? (until the window)

Or the height of the bookshelves? How exactly do you place the "scale" and measure. I'm looking for ideas. However it would help if the answers were in terms of OpenCV.

© Stack Overflow or respective owner

Related posts about image-processing

image processing

as seen on Stack Overflow - Search for 'Stack Overflow'
where i can find useful tutorials about background subtraction?what are the algorithms? >>> More
Basic image processing

as seen on Stack Overflow - Search for 'Stack Overflow'
i have two image of a parking space.one is empty.and another is with some car.now how can i detect the empty space in the image?or how can i detect the car in the image? >>> More
basic image processing

as seen on Stack Overflow - Search for 'Stack Overflow'
what is noise in an image? >>> More
open source image processing lib in java

as seen on Stack Overflow - Search for 'Stack Overflow'
can any one suggest a good open soucre image processing lib in java? i want to devleop a devlop a ORM reader using it. >>> More
Photoshop batch image processing based on EXIF?

as seen on Super User - Search for 'Super User'
I use Photoshop to batch convert my RAW files to JPG. I was wondering if there was a way to make it take different actions based on EXIF? With my particular camera lens, if I open it all the way to F1.7 there is noticeable vignetting, but stopping down smaller doesn't have that problem. What I'd like… >>> More

Related posts about photogrammetry

Computing orientation of a square and displaying an object with the same orientation

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I wrote an application which detects a square within an image. To give you a good understanding of how such an image containing such a square, in this case a marker, could look like: What I get, after the detection, are the coordinates of the four corners of my marker. Now I don't know how… >>> More
How do I measure distances in an image?

as seen on Stack Overflow - Search for 'Stack Overflow'
Let's say we have an image like so Let's say we've already used filters and an edge detection algorithm in this pic. Now my goal is to measure distances (NOT actual distances, distance can be in any arbitrary unit) . eg: How do I find the length of the hall? (until the window) Or the height… >>> More