标注的轮廓点转segnet标签图

一张图对应txt
45.0,1400.0,320.0,1317.0,3387.0,1447.0,3575.0,1537.0,3537.0,1592.0,3367.0,1640.0,287.0,1502.0

drawContours这个函数接受的contours格式搞死我了，一定要这样arr = np.array([arr])。。后面再看看吧！

#coding=utf-8
import cv2
import os
import numpy as np



dir_img = "/data_2/2019biaozhushuju/20191018_cjh_pt/rot/m_rot/"
dir_txt = "/data_2/2019biaozhushuju/20191018_cjh_pt/rot/txt/"
dir_gray_save = "/data_2/2019biaozhushuju/20191018_cjh_pt/1128gray/"
dir_img_save = "/data_2/2019biaozhushuju/20191018_cjh_pt/1128img/"

def read_txt(txt_path):
    with open(txt_path,'r') as fr:
        for line in fr.readlines():
            line = line.strip()
            list_num = line.split(',')
            pt = []
            v_pt = []
            for cnt,val in enumerate(list_num):
                val = val.replace('.0','')
                val = int(val)
                if 0 == cnt%2:
                    pt.append(val)
                else:
                    pt.append(val)
                    v_pt.append(pt)
                    pt = []
            break #### 1 行
    return v_pt

def get_gray(txt_path,path_img,path_gray_save,path_img_save):
    img = cv2.imread(path_img)
    arr = read_txt(txt_path)

    arr = np.array([arr])

    gray = np.zeros((img.shape[0],img.shape[1]),dtype=np.uint8)

    cv2.drawContours(gray,[arr],-1,(1),-1)

    img = cv2.resize(img,(512,512),interpolation = cv2.INTER_NEAREST)
    gray = cv2.resize(gray, (512, 512),interpolation = cv2.INTER_NEAREST)

    cv2.imwrite(path_gray_save,gray)
    cv2.imwrite(path_img_save, img)

    # cv2.namedWindow("src",0)
    # cv2.namedWindow("gray",0)
    # cv2.imshow("src",img)
    # cv2.imshow("gray",gray)
    # cv2.waitKey(0)

list_img = os.listdir(dir_img)
for cnt,img_name in enumerate(list_img):
    print(cnt,img_name)
    path_img = dir_img + img_name
    path_txt = dir_txt + img_name.replace('.jpg','.txt')
    #img = cv2.imread(path_img)
    path_gray_save = dir_gray_save + img_name.replace('.jpg','.png')
    path_img_save = dir_img_save + img_name.replace('.jpg','.png')
    # get_gray(txt_path,path_img,path_gray_save,path_img_save):
    get_gray(path_txt, path_img, path_gray_save,path_img_save)

原文地址：https://www.cnblogs.com/yanghailin/p/11956281.html