165 lines
5.9 KiB
Python
165 lines
5.9 KiB
Python
import numpy as np
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import time,cv2
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def ms(t1,t0):
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return (t1-t0)*1000.0
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def center_coordinate(boundbxs):
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'''
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输入：两个对角坐标xyxy
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输出：矩形框重点坐标xy
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'''
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boundbxs_x1=boundbxs[0]
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boundbxs_y1=boundbxs[1]
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boundbxs_x2=boundbxs[2]
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boundbxs_y2=boundbxs[3]
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center_x=0.5*(boundbxs_x1+boundbxs_x2)
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center_y=0.5*(boundbxs_y1+boundbxs_y2)
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return center_x,center_y
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def fourcorner_coordinate(boundbxs):
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'''
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输入：两个对角坐标xyxy
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输出：矩形框四个角点坐标，以contours顺序。
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'''
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boundbxs_x1=boundbxs[0]
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boundbxs_y1=boundbxs[1]
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boundbxs_x2=boundbxs[2]
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boundbxs_y2=boundbxs[3]
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wid=boundbxs_x2-boundbxs_x1
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hei=boundbxs_y2-boundbxs_y1
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boundbxs_x3=boundbxs_x1+wid
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boundbxs_y3=boundbxs_y1
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boundbxs_x4=boundbxs_x1
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boundbxs_y4 = boundbxs_y1+hei
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contours_rec=[[boundbxs_x1,boundbxs_y1],[boundbxs_x3,boundbxs_y3],[boundbxs_x2,boundbxs_y2],[boundbxs_x4,boundbxs_y4]]
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return contours_rec
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def remove_simivalue(list1,list2):
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'''
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将list1中属于list2的元素都删除。
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输入：两个嵌套列表
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返回：嵌套列表
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'''
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list33=list1.copy()
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for i in range(len(list1)):
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for j in range(len(list2)):
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if list2[j] == list1[i]:
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# list33.pop(list1[i])
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list33.remove(list1[i])
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return list33
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def remove_sameeleme_inalist(list3):
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'''
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将list3中重复嵌套列表元素删除。
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输入：嵌套列表
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返回：嵌套列表
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'''
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list3=list3
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list4=[]
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list4.append(list3[0])
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for dict in list3:
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k=0
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for item in list4:
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if dict!=item:
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k=k+1
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else:
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break
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if k==len(list4):
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list4.append(dict)
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return list4
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def order_points(pts):
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''' sort rectangle points by clockwise '''
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sort_x = pts[np.argsort(pts[:, 0]), :]
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Left = sort_x[:2, :]
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Right = sort_x[2:, :]
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# Left sort
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Left = Left[np.argsort(Left[:, 1])[::-1], :]
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# Right sort
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Right = Right[np.argsort(Right[:, 1]), :]
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return np.concatenate((Left, Right), axis=0)
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def mixDrowing_water_postprocess(preds,_mask_cv,pars ):
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'''还未考虑船上人过滤'''
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'''输入：落水人员的结果（类别+坐标）、原图、mask图像
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过程：获得mask的轮廓，判断人员是否在轮廓内。
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在，则保留且绘制；不在，舍弃。
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返回：最终绘制的结果图、最终落水人员（坐标、类别、置信度），
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'''
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t0=time.time()
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'''1、最大分割水域作为判断依据'''
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img_gray = cv2.cvtColor(_mask_cv, cv2.COLOR_BGR2GRAY) if len(_mask_cv.shape)==3 else _mask_cv
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contours, thresh = cv2.threshold(img_gray, 0, 255, cv2.THRESH_BINARY + cv2.THRESH_OTSU)
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# 寻找轮廓(多边界)
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contours, hierarchy = cv2.findContours(thresh, cv2.RETR_LIST, 2)
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contour_info = []
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for c in contours:
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contour_info.append((
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c,
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cv2.isContourConvex(c),
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cv2.contourArea(c),
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))
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contour_info = sorted(contour_info, key=lambda c: c[2], reverse=True)
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max_contour = contour_info[0]
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#print(max_contour)
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t1=time.time()
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'''2、preds中head+person取出，boat取出。'''
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init_head_person=[]
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init_boat = []
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for i in range(len(preds)):
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#if preds[i][4]=='head' or preds[i][4]=='person':
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if preds[i][0]==0 or preds[i][0]==1:
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init_head_person.append(preds[i])
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else:
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init_boat.append(preds[i])
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t2=time.time()
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'''3、preds中head+person，通过1中水域过滤'''
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init_head_person_filterwater=init_head_person
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final_head_person_filterwater=[]
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for i in range(len(init_head_person_filterwater)):
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center_x, center_y=center_coordinate(init_head_person_filterwater[i])
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flag = cv2.pointPolygonTest(max_contour[0], (center_x, center_y), False) #若为False，会找点是否在内，外，或轮廓上(相应返回+1, -1, 0)。
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if flag==1:
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final_head_person_filterwater.append(init_head_person_filterwater[i])
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else:
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pass
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t3=time.time()
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'''4、水域过滤后的head+person，再通过船舶范围过滤'''
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init_head_person_filterboat=final_head_person_filterwater
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# final_head_person_filterboat=[]
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#获取船舶范围
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boat_contour=[]
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for i in range(len(init_boat)):
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boundbxs1=[init_boat[i][0],init_boat[i][1],init_boat[i][2],init_boat[i][3]]
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contour_temp=fourcorner_coordinate(boundbxs1) #得到boat预测框的顺序contour
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contour_temp_=np.array(contour_temp)
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contour_temp_=np.float32(contour_temp_)
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boat_contour.append(np.array(contour_temp_))
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# 遍历船舶范围，取出在船舶范围内的head和person（可能有重复元素）
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list_headperson_inboat=[]
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for i in range(len(init_head_person_filterboat)):
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for j in range(len(boat_contour)):
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center_x, center_y=center_coordinate(init_head_person_filterboat[i])
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# yyyyyyyy=boat_contour[j]
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flag = cv2.pointPolygonTest(boat_contour[j], (center_x, center_y), False) #若为False，会找点是否在内，外，或轮廓上(相应返回+1, -1, 0)。
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if flag==1:
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list_headperson_inboat.append(init_head_person_filterboat[i])
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else:
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pass
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if len(list_headperson_inboat)==0:
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pass
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else:
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list_headperson_inboat=remove_sameeleme_inalist(list_headperson_inboat) #将重复嵌套列表元素删除
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# 过滤船舶范围内的head和person
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final_head_person_filterboat=remove_simivalue(init_head_person_filterboat,list_headperson_inboat)
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t4=time.time()
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timeInfos = '%.1f (step1:%.1f step2:%.2f step3:%.3f step4:%.1f) ' %( ms(t4,t0), ms(t1,t0),ms(t2,t1),ms(t3,t2),ms(t4,t3) )
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return final_head_person_filterboat,timeInfos #返回最终绘制的结果图、最终落水人员（坐标、类别、置信度）
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