[ptx] fine tuning

[Pablo d'Angelo]

On Sat, 03 Jul 2004, Ph. Gac wrote:

> hi pablo and all,
> 
> I'm still working on my images trying to get the best of hugin
> 
> auto-finetune does quite a good job but I'm afraid integer rounding errors could in the end propagate into big effects.
> I was able to better significantly a large pano (3x10 images) when setting some more precise values. Moreover, better
> placed points means there can be fewer points, because they don't need to cancel each other their errors. It seems,
> also, that these errors sometime prevent the optimizer to glide smoothly along a better situation.

How did you create the fractional positions? with some kind of autopano?

> on top of my wishlist is a 400% (or 800%) zoom to finetune manually some points in some difficult cases. Then,
> auto-finetune would be disabled for such points, marked with a non-zero fractional part (123.0 would be changed to
> 123.01). Of course, a fractional auto-finetune would be better still...

I'll probably do it some time in the future.

> such a zoom would be very useful since the circle mark at 200% zoom is really fatty... and the detail is often still
> quite small, especially on a big screen (with high dpi). A one screen-pixel wide cross could help, with image pixels 4
> times that wide.

I'll add bigger circles for the moment.

> BTW, the auto-update feature (for which there is no checkbox!) is rather hasty: when you change X in the text box, it
> validates it immediatly and deselects the pair, which cannot be selected again by clicking or double-clicking in its
> row, so you have to select another pair and then select again the former to change Y! One suggestion: only ENTER
> validates (no mouse action, since anyway you have to use the keyborard to change these values).

Hmm, It doesn'nt update the values while typing on my config (linux, wxwin
2.4.2, gtk 1.2.10). One has to press enter to apply the changes.

what configuration do you use.

> BTW, the active circle is sometime difficult to distinguish among other reddish circles

I'll make the active circle a bit bigger..

ciao
  Pablo