Python API, Photo.project(point) crashes Ps

[ju523m]

Hi everybody,

to get the two-dimensional image coordinates for a 3D point, is it correct to use photo.project(point)?

For example to check just for testing, if the 3D coordinate of the camera center(focal point)  results in a projected point in the 2D image plane.  It should be projected to the coordinates of the principal point, right?

When I try the following from python console, PS (0.8.4 1289,  Ubuntu linux 10.04.3) crashes (no crash report generated)

import PhotoScan as ps

photo_0 = ps.app.document.activeChunk.photos[0]
cphoto = photo_0.center
(imgx, imgy) = photo_0.project(cphoto)


Ps crashes also when I homogenize the point vector for this operation.

Am I missing something? The Api documentation is a little unprecise at this point.
For example when converting the Camera center coordinates from chunk-coordinate-system into projected map coordinate system - let's say WGS84 UTM Zone 32 N - it is necessary to homogenize the 3D Point vector.

I did it like this:

(preliminaries as above)
currentChunk = ps.app.document.activeChunk
TM = currentChunk.transform          #4x4 Transformation Matrix
grcon = currentCHunk.ground_control
geopro = grcon.projection

#some 3D point pt and  coordinates as  vector of size 3
pv = pt.coord
pv.size = 4
pv.w = 1
pt_geocentric = TM * pv

#resize the resulting vector
pt_geocentric.size = 3
pt_projected = geopro.project(pt_geocentric)


Which works fine.

So, any ideas about photo.project(point) problem?
Thanks for your help.

kind regards

[Alexey Pasumansky]

Hello Tomas,

Thank you for reporting.
Photo.project crashing bug will be fixed in the next update.

[zzzzzmman]

I understand what you are saying but I think there should be more comments regarding the threat that was initially started so that the pool of thoughts is attracted.  Regards.