import numpy as np
import cv2
def ptext(img1,s,pos,sz):
    img2=cv2.putText(img=img1,text=s,org=pos,
      fontFace = cv2.FONT_HERSHEY_DUPLEX,
      fontScale=sz,color=(125,246,55),thickness=1)
    return img2
FW=open('red_A.txt','w')
img=np.zeros((200,600,3),dtype=np.uint8)
for j in range(5):
    fl='red_'+str(j)+'.png'
    B=50; G=10+20*j; R=200
    bgr=np.array([B,G,R], dtype=np.uint8)
    img[:,:]=bgr
    hsv=cv2.cvtColor(img,cv2.COLOR_BGR2HSV)
    a=str(j)+' '+str(bgr)+' '+str(hsv[0,0,:])
    img2=ptext(img,a,(30,30),1)
    print(a); FW.write(a+'\n')
    cv2.imshow('img2',img2)
    cv2.imwrite(fl,img)
    cv2.waitKey(0)
FW.close()