Question

运行python代码进行眼动检测时出现错误，我遵循https://www.youtube.com/watch?v=kbdbZFT9NQI

中的步骤

#https://www.youtube.com/watch?v=kbdbZFT9NQI
import cv2
import numpy
cap = cv2.VideoCapture("C:\\Users\\sinsbv\\Desktop\\Project\\Kaggle\\Tutorial_Mini_Project\\open_cv\\eye_recording.flv")
while True:
    ret,frame = cap.read()
    roi = frame[269:795,537:1416]
    gray_roi = cv2.cvtColor(roi,cv2.COLOR_BGR2GRAY)
    gray_roi = cv2.GaussianBlur(gray_roi , (7  , 7) ,0)
    _,threshold = cv2.threshold(gray_roi,5,255,cv2.THRESH_BINARY_INV)
    _, contours = cv2.findContours ( threshold , cv2.RETR_LIST, cv2.CHAIN_APPROX_SIMPLE )
    for cnt in contours:
        # ctr = numpy.array(cnt).reshape((-1,1,2)).astype(numpy.int32)
        cv2.drawContours(roi,cnt , -1,(0,0,255) ,3)

    cv2.imshow("threshold" , threshold)
    cv2.imshow("gray roi" , gray_roi)
    cv2.imshow("Roi" , roi)
    key = cv2.waitKey(30)
    if key == 27:
        break


cv2.destroyAllWindows()

预期结果-眼动检测实际结果-错误以下，

回溯（最近通话最近）：文件“ C：/Users/sinsbv/Desktop/Project/Kaggle/Tutorial_Mini_Project/open_cv/open_cv.py”，第14行，在 cv2.drawContours（roi，cnt，-1，（0,0,255），3） cv2.error：OpenCV（4.0.0）C：\ projects \ opencv-python \ opencv \ modules \ imgproc \ src \ drawing.cpp：2509：error：（-215：Assertion failed）npoints> 0 in function'cv：：drawContours'

drawctours中的opencv错误-眼动检测python代码

0 个答案: