我想在面积大于某个阈值的每个封闭轮廓周围绘制一个边界框,而不仅仅是最大的轮廓。我该如何做到这一点?
到目前为止,这是我尝试过的:
contours, _ = cv2.findContours(thresh, cv2.RETR_LIST, cv2.CHAIN_APPROX_SIMPLE)
for c in contours:
rect = cv2.boundingRect(c)
if rect[2] < 100 or rect[3] < 100: continue
print cv2.contourArea(c)
x,y,w,h = cv2.boundingRect(c)
cv2.rectangle(im,(x,y),(x+w,y+h),(0,255,0),2)
cv2.putText(im,'Moth Detected',(x+w+10,y+h),0,0.3,(0,255,0))
cv2.imshow("Show",im)
cv2.waitKey()
cv2.destroyAllWindows()