zhreshold commented on a change in pull request #9784: Fix for the case where
there are no detections
URL: https://github.com/apache/incubator-mxnet/pull/9784#discussion_r167951698
##########
File path: example/ssd/detect/detector.py
##########
@@ -136,31 +133,52 @@ class names
height = img.shape[0]
width = img.shape[1]
colors = dict()
- for i in range(dets.shape[0]):
- cls_id = int(dets[i, 0])
- if cls_id >= 0:
- score = dets[i, 1]
- if score > thresh:
- if cls_id not in colors:
- colors[cls_id] = (random.random(), random.random(),
random.random())
- xmin = int(dets[i, 2] * width)
- ymin = int(dets[i, 3] * height)
- xmax = int(dets[i, 4] * width)
- ymax = int(dets[i, 5] * height)
- rect = plt.Rectangle((xmin, ymin), xmax - xmin,
- ymax - ymin, fill=False,
- edgecolor=colors[cls_id],
- linewidth=3.5)
- plt.gca().add_patch(rect)
- class_name = str(cls_id)
- if classes and len(classes) > cls_id:
- class_name = classes[cls_id]
- plt.gca().text(xmin, ymin - 2,
- '{:s} {:.3f}'.format(class_name, score),
- bbox=dict(facecolor=colors[cls_id],
alpha=0.5),
+ for det in dets:
+ (klass, score, x0, y0, x1, y1) = det
+ if score < thresh:
+ continue
+ cls_id = int(klass)
+ if cls_id not in colors:
+ colors[cls_id] = (random.random(), random.random(),
random.random())
+ xmin = int(x0 * width)
+ ymin = int(y0 * height)
+ xmax = int(x1 * width)
+ ymax = int(y1 * height)
+ rect = plt.Rectangle((xmin, ymin), xmax - xmin,
+ ymax - ymin, fill=False,
+ edgecolor=colors[cls_id],
+ linewidth=3.5)
+ plt.gca().add_patch(rect)
+ class_name = str(cls_id)
+ if classes and len(classes) > cls_id:
+ class_name = classes[cls_id]
+ plt.gca().text(xmin, ymin - 2,
+ '{:s} {:.3f}'.format(class_name, score),
+ bbox=dict(facecolor=colors[cls_id], alpha=0.5),
fontsize=12, color='white')
plt.show()
+ @staticmethod
+ def filter_positive_detections(detections):
+ """
+ First column (class id) is -1 for negative detections
+ :param detections:
+ :return:
+ """
+ print(type(detections))
Review comment:
remove print?
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