使用chaquopy在android studio中集成python代码（对象检测代码）

Question

我正试图使用chaquopy在android studio中集成python代码（对象检测），但在手机上测试时，我只得到了打印结果，没有其他效果

这是我运行logcat时得到的结果：

{I/zygote64:Dopartialcodecachecollection,code=117KB,data=91KB/zygote64:Aftercodecache
collection,code=117KB,data=91KBIncreasingcodecachecapacityto512KBI/ViewRootImpl:jank_remveInvalidNodeallthenodeinjanklistisoutoftimeV/AudioManager:playSoundEffecteffectType:0I/python.stdout:creation
of
datasetI/python.stdout:W/InputMethodManager:startInputReason=8V/ActivityThread:
Finishing stop of ActivityRecord{e39245f
token=android.os.BinderProxy@f8d4de
com.example.radar/com.example.radar.MainActivityV/ActivityThread:
Handle window ActivityRecord{e39245f
token=android.os.BinderProxy@f8d4decom.example.radar/com.example.radar.MainActivityvisibility:falseE/BpSurfaceComposerClient:
Failed to transact (-1)E/BpSurfaceComposerClient:Failed to transact
(-1)I/ViewRootImpl: jank_removeInvalidNode all the node in jank list
is out of timeW/InputMethodManager: startInputReason = 1}

这就是我运行代码时得到的结果：

{2021-06-28 12:48:18.640 27425-27505/com.example.radarE/AwareLog:AtomicFileUtilsreadFileLines file not exist: android.util.AtomicFile@4f41434
2021-06-28 12:48:20.389 27425-27475/com.example.radar E/MemoryLeakMonitorManager: MemoryLeakMonitor.jar is not exist!
2021-06-28 12:48:20.391 27425-27425/com.example.radar E/Minikin: Could not get cmap table size!
2021-06-28 12:52:37.473 27425-27425/com.example.radar E/BpSurfaceComposerClient: Failed to transact (-1)
2021-06-28 12:52:37.474 27425-27425/com.example.radar E/BpSurfaceComposerClient: Failed to transact (-1)}

Answer 1

import cv2
import numpy as np
import vehicles
import requests
#import time
#from matplotlib import pyplot as plt
#import time
#url="http://192.168.43.1:8080/shot.jpg"
def main():
   cnt_up=0
   cnt_down=0
   print("creation of dataset")

   cap=cv2.VideoCapture("C://Users//khaoula//AndroidStudioProjects //RADAR//app//src//main//python//cars.mp4")
   print("1111")
   #Get width and height of video

   w=cap.get(3)
   h=cap.get(4)
   frameArea=h*w
   areaTH=frameArea/400
   print("2222")
   #Lines
   line_up=int(2*(h/5))
   line_down=int(3*(h/5))
   print("33333")
   up_limit=int(1*(h/5))
   down_limit=int(4*(h/5))

   #print("Red line y:",str(line_down))
   #print("Blue line y:",str(line_up))
   line_down_color=(255,0,0)
   line_up_color=(255,0,255)
   pt1 =  [0, line_down]
   pt2 =  [w, line_down]
   print("44444")
   pts_L1 = np.array([pt1,pt2], np.int32)
   pts_L1 = pts_L1.reshape((-1,1,2))
   pt3 =  [0, line_up]
   pt4 =  [w, line_up]
   pts_L2 = np.array([pt3,pt4], np.int32)
   pts_L2 = pts_L2.reshape((-1,1,2))
   print("55555")
   pt5 =  [0, up_limit]
   pt6 =  [w, up_limit]
   pts_L3 = np.array([pt5,pt6], np.int32)
   pts_L3 = pts_L3.reshape((-1,1,2))
   pt7 =  [0, down_limit]
   pt8 =  [w, down_limit]
   pts_L4 = np.array([pt7,pt8], np.int32)
   pts_L4 = pts_L4.reshape((-1,1,2))
   print("666666")
   #Background Subtractor
   fgbg=cv2.createBackgroundSubtractorMOG2(detectShadows=True)
   print("77777")
   #Kernals
   kernalOp = np.ones((3,3),np.uint8)
   kernalOp2 = np.ones((5,5),np.uint8)
   kernalCl = np.ones((11,11),np.uint8)
   print("88888")

   font = cv2.FONT_HERSHEY_SIMPLEX
   cars = []
   max_p_age = 5
   pid = 1
   print("99999")

   while (cap.isOpened()):

    print("kkkkk")
    ret,frame=cap.read()
    rows1,cols1,_=frame.shape
    print(rows1,cols1) # 1280  720
    #roi = frame[50:540, 200:960]
    #cols,rows,_=roi.shape
    #print("cols:")
    #print(cols) #490
    #print("rows:")
    #print(rows) #760

    for i in cars:
     i.age_one()
     print("i:")
     print(i)
    print("10")
    fgmask=fgbg.apply(frame)
    fgmask2=fgbg.apply(frame)
    print("11")
    if ret==True:

     #Binarization
     ret,imBin=cv2.threshold(fgmask,200,255,cv2.THRESH_BINARY)
     ret,imBin2=cv2.threshold(fgmask2,200,255,cv2.THRESH_BINARY)
     #OPening i.e First Erode the dilate
     mask=cv2.morphologyEx(imBin,cv2.MORPH_OPEN,kernalOp)
     mask2=cv2.morphologyEx(imBin2,cv2.MORPH_CLOSE,kernalOp)

     #Closing i.e First Dilate then Erode
     mask=cv2.morphologyEx(mask,cv2.MORPH_CLOSE,kernalCl)
     mask2 = cv2.morphologyEx(mask2, cv2.MORPH_CLOSE, kernalCl)
     print("12")


    #Find Contours
    countours0,hierarchy=cv2.findContours(mask,cv2.RETR_EXTERNAL,cv2.CHAIN_APPROX_NONE)
    print("13")
    for cnt in countours0:
        area=cv2.contourArea(cnt)

        if area>areaTH:
            ####Tracking######
            m=cv2.moments(cnt)
            cx=int(m['m10']/m['m00'])
            cy=int(m['m01']/m['m00'])
            x,y,w,h=cv2.boundingRect(cnt)
            #cv2.rectangle(roi, (x, y), (x + w, y + h), (0, 165, 255), 5)
            crop_frame=frame[y-3:y + h+3, x-3:x + w+3]

            new=True
            if cy in range(up_limit,down_limit):
                for i in cars:

                    if abs(x - i.getX()) <= w and abs(y - i.getY()) <= h:
                        new = False
                        i.updateCoords(cx, cy)

                        if i.going_UP(line_down,line_up)==True:
                            cnt_up+=1
                            print("ID:",i.getId(),'crossed going up ')#at', time.strftime("%c"))
                        elif i.going_DOWN(line_down,line_up)==True:
                            cnt_down+=1
                            print("ID:", i.getId(), 'crossed going up')# at', time.strftime("%c"))
                        break
                    if i.getState()=='1':
                        if i.getDir()=='down'and i.getY()>down_limit:
                            i.setDone()
                        elif i.getDir()=='up'and i.getY()<up_limit:
                            i.setDone()
                    if i.timedOut():
                        index=cars.index(i)
                        cars.pop(index)
                        del i
                    #file=*****************************************************************************
                    #file = "C://Users//khaoula//PycharmProjects//Radar//" + "hh.jpg"
                    #cv2.imwrite(file, i)
                if new==True: #If nothing is detected,create new
                    p=vehicles.Car(pid,cx,cy,max_p_age)
                    n=str(pid)
                    cars.append(p)
                    pid+=1

            #cv2.circle(frame,(cx,cy),5,(0,0,255),-1)
            #while True:
            cv2.rectangle(frame,(x,y),(x+w,y+h),(0,255,0),2)
             #print(img)
            #crop_img = roi[y :y + h , x :x + w ]
            # s = cv2.imread(str(crop_img))
             #n = str(pid)  # +"_speed_"+str(sp)
             #file = 'C://Users//khaoula//PycharmProjects//Radar//' + n + '.jpg'
             #cv2.imwrite(file, roi)

            #print("img:")
            #print(img)
            #file = "C://Users//khaoula//PycharmProjects//Radar//" + "hh.jpg"
            #cv2.imwrite(file, img)


    for i in cars:
        cv2.putText(frame, str(i.getId()), (i.getX(), i.getY()), font, 0.3, i.getRGB(), 1, cv2.LINE_AA)
        #crop_img = roi[i.getY():i.getY() + h, i.getX():i.getX() + w]
        file = 'C://Users//khaoula//PycharmProjects//Radar//pics//' + n + '.jpg'
        cv2.imwrite(file, crop_frame)


        #cv2.imshow("img", frameArea)
        #t = time.strftime("%Y-%m-%d_%H-%M-%S")
        #file = "C://Users//khaoula//PycharmProjects//Radar//" + ".jpg"
        #cv2.imwrite(file, frameArea)



    str_up='UP: '+str(cnt_up)
    str_down='DOWN: '+str(cnt_down)
    frame=cv2.polylines(frame,[pts_L1],False,line_down_color,thickness=2)
    frame=cv2.polylines(frame,[pts_L2],False,line_up_color,thickness=2)
    frame=cv2.polylines(frame,[pts_L3],False,(255,255,255),thickness=1)
    frame=cv2.polylines(frame,[pts_L4],False,(255,255,255),thickness=1)
    cv2.putText(frame, str_up, (10, 40), font, 0.5, (255, 255, 255), 2, cv2.LINE_AA)
    cv2.putText(frame, str_up, (10, 40), font, 0.5, (0, 0, 255), 1, cv2.LINE_AA)
    cv2.putText(frame, str_down, (10, 90), font, 0.5, (255, 255, 255), 2, cv2.LINE_AA)
    cv2.putText(frame, str_down, (10, 90), font, 0.5, (255, 0, 0), 1, cv2.LINE_AA)
    cv2.imshow('Frame',frame)


    print(str_up)
    print(str_down)
    if cv2.waitKey(1)&0xff==ord('q'):
        break

else:
    break
print("mmmmmmmmmm")
cap.release()
return cap

这是我试图在android studio中集成的python代码，问题似乎来自while循环，因为我在9999年之前获得所有打印，然后应用程序崩溃。我想这是因为我正在制作的视频，但我还不确定