fix/test: DistanceTransform array out of bounds exception

[bogovicj]

• adds tests that reproduce the error in DistanceTransform throws Exception with certain weights #108

[bogovicj]

The second commit to this PR substantially speeds things up (40% - 100%) by using primitive arrays for parts of the lowest level methods transformAlongDimension and transformAlongDimensionPropagateLabels

Because this implementation makes an attempt to support very large images, we fall back to the old implementation if any dimension is longer than Integer.MAX_VALUE.

That commit also includes a benchmark, some of the results of which are shown below.

Note: there is certainly room for more optimization, but this covers some relatively low-hanging fruit.

Selected benchmark results

2D

old single thread

Benchmark                                            Mode  Cnt    Score   Error  Units
DistanceTransformBenchmark.distanceTransform  avgt   60  335.409 ± 2.358  ms/op
DistanceTransformBenchmark.voronoiDistanceTransform  avgt   25  484.629 ± 6.081  ms/op

new single thread

Benchmark                                            Mode  Cnt    Score   Error  Units
DistanceTransformBenchmark.distanceTransform  avgt   60  165.260 ± 1.427  ms/op
DistanceTransformBenchmark.voronoiDistanceTransform  avgt   25  295.930 ± 3.423  ms/op

old multi-thread (8)

Benchmark                                            Mode  Cnt    Score   Error  Units
DistanceTransformBenchmark.distanceTransform  avgt   25  106.692 ± 1.874  ms/op
DistanceTransformBenchmark.voronoiDistanceTransform  avgt   25  170.793 ± 1.800  ms/op

new multi-thread (8)

Benchmark                                            Mode  Cnt    Score   Error  Units
DistanceTransformBenchmark.distanceTransform  avgt   25  46.543 ± 1.638  ms/op
DistanceTransformBenchmark.voronoiDistanceTransform  avgt   25  118.340 ± 2.338  ms/op

3D

old single threaded

Benchmark                                            Mode  Cnt     Score    Error  Units
DistanceTransformBenchmark.distanceTransform         avgt   25  1167.336 ± 14.451  ms/op
DistanceTransformBenchmark.voronoiDistanceTransform  avgt   25  1852.702 ± 20.670  ms/op

new single threaded

Benchmark                                            Mode  Cnt     Score    Error  Units
DistanceTransformBenchmark.distanceTransform         avgt   25   605.162 ±  6.575  ms/op
DistanceTransformBenchmark.voronoiDistanceTransform  avgt   25  1315.934 ± 22.510  ms/op