Revision history [back]

Hi All,

I am having trouble working out how to solve the following problem:

I am acquiring images from a camera placed within a tube of known fixed diameter, I am trying to implement an interface whereby a user can draw a line between 2 points and the measurement should be calculated, this can be in any orientation they like.

My first approach was to use trig, But then I thought this would be erroneous due to perspective distortion?

Could any body shed any light on this?

Thanks, Digby

Hi All,

I am having trouble working out how to solve the following problem:

I am acquiring images from a camera placed within a tube of known fixed diameter, I am trying to implement an interface whereby a user can draw a line between 2 points and the measurement should be calculated, this can be in any orientation they like.

My first approach was to use trig, But then I thought this would be erroneous due to perspective distortion?

Could any body anybody shed any light on this?

Thanks, Digby

Hi All,

I am having trouble working out how to solve the following problem:

I am acquiring images from a camera placed within a tube of known fixed diameter, I am trying to implement an interface whereby a user can draw a line between 2 points and the real world measurement should be calculated, this can be in any orientation they like.

My first approach was to use trig, But then I thought this would be erroneous due to perspective distortion?

Could anybody shed any light on this?

Thanks, Digby

Hi All,

I am having trouble working out how to solve the following problem:

I am acquiring images from a camera placed within a tube of known fixed diameter, I am trying to implement an interface whereby a user can draw a line between 2 points and the real world measurement should be calculated, this can be in any orientation they like.

My first approach was to use trig, But then I thought this would be erroneous due to perspective distortion?

Could anybody shed any light on this?

Thanks, Digby