[mlpack-git] [mlpack/mlpack] edge_boxes: feature extraction updated, tests added (#696)

stereomatchingkiss notifications at github.com
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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