From 8f9dda8608d3e7af24f141b7ed76a030e21a3812 Mon Sep 17 00:00:00 2001 From: LDOUBLEV Date: Mon, 22 Feb 2021 09:53:43 +0800 Subject: [PATCH] fix issue 2013 --- ppocr/data/imaug/make_shrink_map.py | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) diff --git a/ppocr/data/imaug/make_shrink_map.py b/ppocr/data/imaug/make_shrink_map.py index 8e612235..03385e3e 100644 --- a/ppocr/data/imaug/make_shrink_map.py +++ b/ppocr/data/imaug/make_shrink_map.py @@ -44,21 +44,34 @@ class MakeShrinkMap(object): ignore_tags[i] = True else: polygon_shape = Polygon(polygon) - distance = polygon_shape.area * ( - 1 - np.power(self.shrink_ratio, 2)) / polygon_shape.length - subject = [tuple(l) for l in text_polys[i]] + subject = [tuple(l) for l in polygon] padding = pyclipper.PyclipperOffset() padding.AddPath(subject, pyclipper.JT_ROUND, pyclipper.ET_CLOSEDPOLYGON) - shrinked = padding.Execute(-distance) + shrinked = [] + + # Increase the shrink ratio every time we get multiple polygon returned back + possible_ratios = np.arange(self.shrink_ratio, 1, + self.shrink_ratio) + np.append(possible_ratios, 1) + # print(possible_ratios) + for ratio in possible_ratios: + # print(f"Change shrink ratio to {ratio}") + distance = polygon_shape.area * ( + 1 - np.power(ratio, 2)) / polygon_shape.length + shrinked = padding.Execute(-distance) + if len(shrinked) == 1: + break + if shrinked == []: cv2.fillPoly(mask, polygon.astype(np.int32)[np.newaxis, :, :], 0) ignore_tags[i] = True continue - shrinked = np.array(shrinked[0]).reshape(-1, 2) - cv2.fillPoly(gt, [shrinked.astype(np.int32)], 1) - # cv2.fillPoly(gt[0], [shrinked.astype(np.int32)], 1) + + for each_shirnk in shrinked: + shirnk = np.array(each_shirnk).reshape(-1, 2) + cv2.fillPoly(gt, [shirnk.astype(np.int32)], 1) data['shrink_map'] = gt data['shrink_mask'] = mask -- GitLab