JimG
Western Thunderer
Big word.
But I'm thinking of trying to use it to sort out the dimensions of the Caledonian 498 Class locomotive which I'm starting to build. There is no official GA drawing available from any of the drawing archives, but there is a good range of pictures available. There is one, small scale drawing available on Jim Smellie's Caley Coaches web site at the end of the notes for his 4mm etched kit, but I'm not sure that I agree with some of the dimensions on that drawing after pouring over a lot of the photographs over the past few weeks.
So over the past day or two I've been digging around on the web to see if there is anything available which would allow me to do something using the computer and I've come across a lot of information about photogrammetry which uses two or more images to generate three dimensional information about an object. I've investigated a few but they require that the pictures be taken at the same time in a specific manner and on the same camera.
I'm thinking of having a look at this software to see if it will work with images from different cameras, and also in black and white.
http://www.arc-team.homelinux.com/arcteam/ppt.php
I'm also aware of AutoDesk's 123D Catch
http://www.123dapp.com/catch
but have been put off by their EULA which gives them full rights over any images used and I don't have copyright on any of the images I have.
has anyone got any experience in this field so that I don't go re-inventing the wheel, or wasting my time.
Jim.
But I'm thinking of trying to use it to sort out the dimensions of the Caledonian 498 Class locomotive which I'm starting to build. There is no official GA drawing available from any of the drawing archives, but there is a good range of pictures available. There is one, small scale drawing available on Jim Smellie's Caley Coaches web site at the end of the notes for his 4mm etched kit, but I'm not sure that I agree with some of the dimensions on that drawing after pouring over a lot of the photographs over the past few weeks.
So over the past day or two I've been digging around on the web to see if there is anything available which would allow me to do something using the computer and I've come across a lot of information about photogrammetry which uses two or more images to generate three dimensional information about an object. I've investigated a few but they require that the pictures be taken at the same time in a specific manner and on the same camera.
I'm thinking of having a look at this software to see if it will work with images from different cameras, and also in black and white.
http://www.arc-team.homelinux.com/arcteam/ppt.php
I'm also aware of AutoDesk's 123D Catch
http://www.123dapp.com/catch
but have been put off by their EULA which gives them full rights over any images used and I don't have copyright on any of the images I have.
has anyone got any experience in this field so that I don't go re-inventing the wheel, or wasting my time.
Jim.