我已经使用 opencv 读取图像,将其转换为灰度,并使用 canny、kernel、thesh、erode 等找到边缘,并且我使用 HooughLineP() 检测到图像中的所有线条,并且我检测到了小时数和分针,但我还需要找到秒针,这是我使用过的代码
import cv2
import math
import numpy as np
from matplotlib import pyplot as plt
from math import sqrt
from math import acos, degrees
kernel = np.ones((5,5),np.uint8)
img1 = cv2.imread('input1.jpg')
img = cv2.imread('input1.jpg',0)
gray = cv2.cvtColor(img1, cv2.COLOR_BGR2GRAY)
ret, thresh = cv2.threshold(gray, 50, 255, cv2.THRESH_BINARY)
# Create mask
height,width = img.shape
#height=height-10
#width=width-10
mask = np.zeros((height,width), np.uint8)
edges = cv2.Canny(thresh, 100, 200)
#cv2.imshow('detected ',gray)
cimg=cv2.cvtColor(img, cv2.COLOR_GRAY2BGR)
circles = cv2.HoughCircles(gray, cv2.HOUGH_GRADIENT, 1.2, 100)
#circles = cv2.HoughCircles(edges, cv2.HOUGH_GRADIENT, 1.2, 1000, param1 = 50, param2 = 30, minRadius = 20, maxRadius = 0)
for i in circles[0,:]:
i[2]=i[2]+4
# Draw on mask
cv2.circle(mask,(i[0],i[1]),i[2],(255,255,255),thickness=-1)
# Copy that image using that mask
masked_data = cv2.bitwise_and(img1, img1, mask=mask)
# Apply Threshold
_,thresh = cv2.threshold(mask,1,255,cv2.THRESH_BINARY)
# Find Contour
contours = cv2.findContours(thresh,cv2.RETR_EXTERNAL,cv2.CHAIN_APPROX_SIMPLE)
x,y,w,h = cv2.boundingRect(contours[0])
# Crop masked_data
crop = masked_data[y+30:y+h-30,x+30:x+w-30]
i=crop
height, width, channels = i.shape
print (width, height, channels)
#########################################################################
ret, mask = cv2.threshold(i, 10, 255, cv2.THRESH_BINARY)
edges = cv2.Canny(i,100,200)
kernel = np.ones((11,11),np.uint8)
kernel2 = np.ones((13,13),np.uint8)
edges = cv2.dilate(edges,kernel,iterations = 1)
edges = cv2.erode(edges,kernel2,iterations = 1)
minLineLength = 1000
maxLineGap = 10
lines = cv2.HoughLinesP(edges,1,np.pi/180,15,minLineLength,maxLineGap)
h=[]
xmax1=0
xmax2=0
ymax1=0
ymax2=0
xs1=0
xs2=0
ys1=0
ys2=0
for line in lines:
x1, y1, x2, y2 = line[0]
#cv2.line(i, (x1, y1), (x2, y2), (0, 255, 0), 1)
dx=x2-x1
if(dx<0):
dx=dx*-1
dy=y2-y1
if(dy<0):
dy=dy*-1
hypo=sqrt(dx**2 + dy**2)
#print("dx=",dx," dy=",dy)
h.append(hypo)
#print(h)
print(len(h))
a=len(h)
h.sort(reverse=True)
#print(h)
m=0
k=0
for f in range(a):
for line in lines:
x1, y1, x2, y2 = line[0]
#cv2.line(i, (x1, y1), (x2, y2), (0, 255, 0), 3)
dx=x2-x1
if(dx<0):
dx=dx*-1
dy=y2-y1
if(dy<0):
dy=dy*-1
hypo2=sqrt(dx**2 + dy**2)
if(hypo2==h[0]):
m=hypo2
xmax1=x1
xmax2=x2
ymax1=y1
ymax2=y2
cv2.line(crop, (xmax1, ymax1), (xmax2, ymax2), (255, 0, 0), 3)
#print("xmax1=",xmax1," ymax1=",ymax1," xmax2=",xmax2," ymax2=",ymax2)
if(m==h[0]):
if(hypo2==h[f]):
if((sqrt((xmax2-x2)**2 + (ymax2-y2)**2))>20):
if((sqrt((xmax1-x1)**2 + (ymax1-y1)**2))>20):
xs1=x1
xs2=x2
ys1=y1
ys2=y2
cv2.line(crop, (xs1, ys1), (xs2, ys2), (0, 255, 0), 3)
print("xs1=",xs1," ys1=",ys1," xs2=",xs2," ys2=",ys2)
k=1
break
if(k==1):
break
print("xmax1=",xmax1," ymax1=",ymax1," xmax2=",xmax2," ymax2=",ymax2)
我已经在上面的代码行中分开了分针和时针,但我也需要分开秒针,请任何人帮助我!