![](/img/trans.png)
[英]How can I use RotatedRect in Python in order to use it for ellipse?
[英]How to use the cv::RotatedRect in Python
自己計算旋轉后的img的大小
def rotate(img, degree):
h, w = img.shape[:2]
center = (w // 2, h // 2)
dst_h = int(w * math.fabs(math.sin(math.radians(degree))) + h * math.fabs(math.cos(math.radians(degree))))
dst_w = int(h * math.fabs(math.sin(math.radians(degree))) + w * math.fabs(math.cos(math.radians(degree))))
matrix = cv2.getRotationMatrix2D(center, degree, 1)
matrix[0, 2] += dst_w // 2 - center[0]
matrix[1, 2] += dst_h // 2 - center[1]
dst_img = cv2.warpAffine(img, matrix, (dst_w, dst_h), borderValue=(255, 255, 255))
return dst_img
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.