OpenCV

OpenCV实现了图像处理和计算机视觉方面的很多通用算法。
500 多个C函数 致力于真实世界的实时应用

• need to download libs
• ms.vs.cpp.settings.64bit framework
• create a console prog. tobe easy.

#include "opencv2/opencv.hpp"
waitKey(n);

• using namespace cv;
• Mat: matrix...obj_cv.(bmp?)
• imread("xxx.jpg",8888)->obg_cv; //load img by file name,888 is int_mode option
• imshow("win_title",obj_cv);
• imwrite("new_file_name",obj_cv);
• namedWindow(),resizeWindow()
• moveWindow()
• include stdint; uint8_t

obj_cv.at<type>(a,b)//type maybe uin8_t/float/cv::vec3d

• split(),merge()

python:

import numpy as np
import cv2

img = cv2.imread('watch.jpg',cv2.IMREAD_COLOR)

cv2.line(img,....)
cv2.rectangle(img,(100,63),...)
cv2.circle(...)

pts = np.array([[88,88]..np.int32]
cv2.polilines(img,...) //polygon

font = cv2.FONT_HERSHEY_SIMPLEX
cv2.putText(img,'aaabbcde'...)

cv2.imgshow('image',img)
cv2.waitKey(0)
cv2.destroyAllWindows()