resizing an image while retaining physical location.

[zivy]

resolves #4

[blowekamp]

@zivy This does not appear to be a general "resize" method.

[zivy]

@blowekamp, you are correct.

This resize keeps the original physical aspect ratio and makes the image isotropic. Function name should reflect this, but I think it is a useful function. Would appreciate any ideas you have for a better function name (it's harder to get the name right than the implementation).

[blowekamp]

@zivy We could have many function for different things, or functions with parameters to control behavior.

From #4 I said:

The method should be further generalized with an option to preserve the aspect ratio and to select the output pixel type.

There should be a argument added "preserve_physical_ratio". The current configuration would be when preserve_physical_ratio is true, otherwise the input image would fill the requests output resolution. This behavior would be similar to scikit-image resize and opencv resize.

We can add parameterization for the interpolator and antialiasing strategy later.

[zivy]

I expected the default for anti_aliasing_sigma to be 0, no antialiasing. The value of None results in antialiasing with a default sigma.

Possibly change to 0?

[blowekamp]

done

[blowekamp]

The resize method is a high level turn key method which automatically configures the itk resample filter to produce a good quality image. Enabling antialiasing by default follows this intention.

[zivy]

Got it. Makes sense given the intended turnkey aspect of the function.

[dave3d]

Could use a test with a 3d image.

[blowekamp]

All comments have been resolved.