[mlpack-git] [mlpack/mlpack] edge_boxes: feature extraction updated, tests added (#696)
stereomatchingkiss
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Wed Jun 15 12:39:23 EDT 2016
> + // transform along rows
> + for (size_t y = 0; y < im.n_rows; y++)
> + {
> + f.subvec(0, im.n_cols - 1) = im.row(y).t();
> + arma::vec d = this->DistanceTransform1D(f, im.n_cols, inf);
> + im.row(y) = d.t();
> + }
> +}
> +
> +/* euclidean distance transform of binary image using squared distance */
> +template<typename MatType, typename CubeType>
> +MatType StructuredForests<MatType, CubeType>::
> +DistanceTransformImage(MatType const &im, double on)
> +{
> + //need a large value but not infinity.
> + double inf = 999999.99;
As zoq mentions, we can define a const value for inf and -inf(DBL_MAX and -DBL_MAX).
```
constexpr double DBL_MAX = std::numeric_limits<double>::max();
constexpr double DBL_MIN = std::numeric_limits<double>::min();
```
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