本文整理汇总了Python中cv2.rotatedRectangleIntersection方法的典型用法代码示例。如果您正苦于以下问题：Python cv2.rotatedRectangleIntersection方法的具体用法？Python cv2.rotatedRectangleIntersection怎么用？Python cv2.rotatedRectangleIntersection使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类cv2的用法示例。
在下文中一共展示了cv2.rotatedRectangleIntersection方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: iou_rotate_calculate2
# 需要导入模块: import cv2 [as 别名]
# 或者: from cv2 import rotatedRectangleIntersection [as 别名]
def iou_rotate_calculate2(boxes1, boxes2):
ious = []
if boxes1.shape[0] != 0:
area1 = boxes1[:, 2] * boxes1[:, 3]
area2 = boxes2[:, 2] * boxes2[:, 3]
for i in range(boxes1.shape[0]):
temp_ious = []
r1 = ((boxes1[i][0], boxes1[i][1]), (boxes1[i][2], boxes1[i][3]), boxes1[i][4])
r2 = ((boxes2[i][0], boxes2[i][1]), (boxes2[i][2], boxes2[i][3]), boxes2[i][4])
int_pts = cv2.rotatedRectangleIntersection(r1, r2)[1]
if int_pts is not None:
order_pts = cv2.convexHull(int_pts, returnPoints=True)
int_area = cv2.contourArea(order_pts)
inter = int_area * 1.0 / (area1[i] + area2[i] - int_area)
temp_ious.append(inter)
else:
temp_ious.append(0.0)
ious.append(temp_ious)
return np.array(ious, dtype=np.float32) 示例2: iou_rotate
# 需要导入模块: import cv2 [as 别名]
# 或者: from cv2 import rotatedRectangleIntersection [as 别名]
def iou_rotate(box_a, box_b, method='union'):
rect_a = cv2.minAreaRect(box_a)
rect_b = cv2.minAreaRect(box_b)
r1 = cv2.rotatedRectangleIntersection(rect_a, rect_b)
if r1[0] == 0:
return 0
else:
inter_area = cv2.contourArea(r1[1])
area_a = cv2.contourArea(box_a)
area_b = cv2.contourArea(box_b)
union_area = area_a + area_b - inter_area
if union_area == 0 or inter_area == 0:
return 0
if method == 'union':
iou = inter_area / union_area
elif method == 'intersection':
iou = inter_area / min(area_a, area_b)
else:
raise NotImplementedError
return iou 示例3: nms_rotate_cpu
# 需要导入模块: import cv2 [as 别名]
# 或者: from cv2 import rotatedRectangleIntersection [as 别名]
def nms_rotate_cpu(boxes, scores, iou_threshold, max_output_size):
keep = []
order = scores.argsort()[::-1]
num = boxes.shape[0]
suppressed = np.zeros((num), dtype=np.int)
for _i in range(num):
if len(keep) >= max_output_size:
break
i = order[_i]
if suppressed[i] == 1:
continue
keep.append(i)
r1 = ((boxes[i, 0], boxes[i, 1]), (boxes[i, 2], boxes[i, 3]), boxes[i, 4])
area_r1 = boxes[i, 2] * boxes[i, 3]
for _j in range(_i + 1, num):
j = order[_j]
if suppressed[i] == 1:
continue
r2 = ((boxes[j, 0], boxes[j, 1]), (boxes[j, 2], boxes[j, 3]), boxes[j, 4])
area_r2 = boxes[j, 2] * boxes[j, 3]
inter = 0.0
int_pts = cv2.rotatedRectangleIntersection(r1, r2)[1]
if int_pts is not None:
order_pts = cv2.convexHull(int_pts, returnPoints=True)
int_area = cv2.contourArea(order_pts)
inter = int_area * 1.0 / (area_r1 + area_r2 - int_area + cfgs.EPSILON)
if inter >= iou_threshold:
suppressed[j] = 1
return np.array(keep, np.int64) 示例4: nms_rotate_cpu
# 需要导入模块: import cv2 [as 别名]
# 或者: from cv2 import rotatedRectangleIntersection [as 别名]
def nms_rotate_cpu(boxes, scores, iou_threshold, max_output_size):
keep = []
order = scores.argsort()[::-1]
num = boxes.shape[0]
suppressed = np.zeros((num), dtype=np.int)
for _i in range(num):
if len(keep) >= max_output_size:
break
i = order[_i]
if suppressed[i] == 1:
continue
keep.append(i)
r1 = ((boxes[i, 0], boxes[i, 1]), (boxes[i, 2], boxes[i, 3]), boxes[i, 4])
area_r1 = boxes[i, 2] * boxes[i, 3]
for _j in range(_i + 1, num):
j = order[_j]
if suppressed[i] == 1:
continue
r2 = ((boxes[j, 0], boxes[j, 1]), (boxes[j, 2], boxes[j, 3]), boxes[j, 4])
area_r2 = boxes[j, 2] * boxes[j, 3]
inter = 0.0
try:
int_pts = cv2.rotatedRectangleIntersection(r1, r2)[1]
if int_pts is not None:
order_pts = cv2.convexHull(int_pts, returnPoints=True)
int_area = cv2.contourArea(order_pts)
inter = int_area * 1.0 / (area_r1 + area_r2 - int_area + cfgs.EPSILON)
except:
"""
cv2.error: /io/opencv/modules/imgproc/src/intersection.cpp:247:
error: (-215) intersection.size() <= 8 in function rotatedRectangleIntersection
"""
# print(r1)
# print(r2)
inter = 0.9999
if inter >= iou_threshold:
suppressed[j] = 1
return np.array(keep, np.int64)