opencv 绘制坐标曲线_opencv画坐标系（便于与世界坐标转化）、检测色块（目标物体）...

from collections import deque

import numpy as np

import cv2

import time

class Painter(object):

def __init__(self,img,start_point=(20,20)):

self.horizons_center = (0,0)

self.point_list = [] self.line_list = [] self.get_point_line(img,start_point)

def add_text(self,img,text,point,size=0.5,color=(0,0,255)):

cv2.putText(img,text,point,cv2.FONT_HERSHEY_COMPLEX,size,color,1)

return img

def draw_a_circle(self,img,point,radius=3,color=(255,0,0),thickness=2):

img = self.draw_a_point(img,point,radius,color,thickness)

return img

def draw_a_point(self,img,point,radius=3,color=(255,0,0),thickness=-4):

cv2.circle(img, point, radius, color, thickness)

return img

def draw_all_point(self,img):

for point in self.point_list:

if point == self.h