you are doing what I am doing.
I already have part of the vehicle to refer to and measure up and have created an accurate model of it, Rhino does not manage to match it to any photos of it, not even close, it goes totally wild. I am using the correct procedure.
My problems are also the command itself. :-
as soon as I zoom in on the model to place my point having first placed it in the background Image ( and I wish there was a way of using some keyboard key held down to magnify the image as I try and place my point), I get a 1 appear, so far so good, I then place my next point in background image then pan model to be able to place point at the correct spot, and it says please start again.
No panning or zooming is allowed.It breaks the spell ! with FormZ one can pan and zoom whilst placing points, then even add more points if first ‘solve’ doesnt go as planned. Again though I get about 80% fit. Save the view, as per Rhino, enables rematching. Do a save file and that stops ability to add any more points as they all vanish, view still there.
So to overcome Rhino pan/zoom I now place points on the model, try and remember where these correspond to on the photo, then turn on osnap just for points and get round the need to zoom, dare not even pan, hold back all instincts of 3D viewing !
As such if it was to match, to then plot something from the photo onto the model is the next challenge.
Save view is vital so as to reset the match, no ability to zoom in on what is a hi res photo to draw something on it and relate that to the model, as photo is not zoomable.
The main problem though is it just doesnt match the photo. I have a number of photos so it cant be just that one has been cropped etc over time. The other problem is often the vehicle isnt the main subject of the photo, I dare not crop it though.
I wish one also had the ability to indicate a linear feature in the photo and in the model as extra guidance for the prog to do its matching.
I shall have to try for a few more photos, but its failing on the hires big ones I have, the ones I need to use.