Support float/double image width and height

[Parskatt]

Hi,

Currently the python wrapper, see e.g. here:

graph-cut-ransac/src/pygcransac/src/gcransac_python.cpp

Lines 721 to 731 in 37f7469

	int findFundamentalMatrix_(
	// The 2D-2D point correspondences
	std::vector<double>& correspondences,
	// The probabilities for each 3D-3D point correspondence if available
	std::vector<double> &point_probabilities,
	// Output: the found inliers
	std::vector<bool>& inliers,
	// Output: the found 6D pose
	std::vector<double> &fundamental_matrix,
	// The images' sizes
	int h1, int w1, int h2, int w2,

only supports integer image sizes.

As far as I can tell, these are always cast to doubles, so it would make sense to support arbitrary numbers.

In my use case I have modified the intrinsics, and hence the "virtual" image sizes become doubles. I'm unsure if rounding these to integers pose any issues to the RANSAC loop, so would prefer to insert the exact values.

Although reading the code it seems these only control neighbourhood sizes so I guess rounding shouldnt be a big issue.

Best,
Johan

[danini]

Rounding should not cause any problem I think. The sizes are only used for specific samplers and for the neighborhood calculation.