[Olena-patches] olena-2.0-131-g2d34749 scribo/binarization/sauvola_ms.hh: Fix overlapping area criterion.

--- scribo/ChangeLog | 5 +++++ scribo/scribo/binarization/sauvola_ms.hh | 11 ++++++----- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/scribo/ChangeLog b/scribo/ChangeLog index 615a624..64e13a6 100644 --- a/scribo/ChangeLog +++ b/scribo/ChangeLog @@ -1,3 +1,8 @@ +2012-11-05 Guillaume Lazzara <z(a)lrde.epita.fr> + + * scribo/binarization/sauvola_ms.hh: Fix overlapping area + criterion. + 2012-09-10 Guillaume Lazzara <z(a)lrde.epita.fr> * scribo/binarization/sauvola_ms.hh: Add comments. diff --git a/scribo/scribo/binarization/sauvola_ms.hh b/scribo/scribo/binarization/sauvola_ms.hh index 0bc595e..8be92e5 100644 --- a/scribo/scribo/binarization/sauvola_ms.hh +++ b/scribo/scribo/binarization/sauvola_ms.hh @@ -895,7 +895,8 @@ namespace scribo ++win_w[i]; } - float coeff = 1.4; + float coeff_max = 1.6; + float coeff_min = 1.4; # ifdef SCRIBO_LOCAL_THRESHOLD_DEBUG @@ -915,7 +916,7 @@ namespace scribo t_ima[i] = internal::compute_t_n_and_e_2(sub_ima[i], e_2, // (8096 / 144) / coeff, // 44 / coeff, - win_w[i] / s / coeff, + win_w[i] / s / coeff_max, mln_max(unsigned), s, q, i, w_work, @@ -929,8 +930,8 @@ namespace scribo t_ima[i] = internal::compute_t_n_and_e_2(sub_ima[i], e_2, // 22 / coeff, // 201 * coeff, - win_w[i] / s / coeff, - win_w[i] * s * coeff, + win_w[i] / s / coeff_min, + win_w[i] * s * coeff_max, // (810 / 36) / coeff, // (8096 / 36) * coeff, s, @@ -945,7 +946,7 @@ namespace scribo // FIXME: was '0'. '2' is to avoid too much noise with k=0.2. 2, // 99 * coeff, - win_w[2] * s * coeff, + win_w[2] * s * coeff_max, // (810 / 9) * coeff, s, 1, 2, w_work, integral_sum_sum_2); -- 1.7.2.5