How to save to a specific directory (python)?

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Hello. I would like to know how to create a folder every time the program is run and save to a specific location.

Currently it saves the file where the code is.

This is my current code:

import cv2
from datetime import datetime
import numpy as up

def main(args):

    camera_port1 = 0     
    nFrames = 30

    camera1 = cv2.VideoCapture(camera_port1)
    data = datetime.now().strftime("%Y-%m-%d__%H-%M-%S")

   file1 =("camera_1_{}.png".format(data))

    print ("Digite <ESC> para sair / <s> para Salvar")   

    emLoop= True

    while(emLoop):

        retval1, img1 = camera1.read()
        cv2.imshow('Foto1',img1)

        k = cv2.waitKey(100)

        if k == 27:
            emLoop= False

        elif k == ord('s'):
            cv2.imwrite(file1,img1)
            emLoop= False

    cv2.destroyAllWindows()
    camera1.release()

    return 0

if __name__ == '__main__':
    import sys
    sys.exit(main(sys.argv))
python python-3.x opencv

  • Change the file1, to a directory, for example: C:\\Users\\nome_do_usuario\\Envs\\ambiente_python\\Lib\\site-packages\\cv2\\data\\imagem.png plus the file name. The code file1 =("camera_1_{}.png".format(data)). Or use libraries to find a directory os.path.dirname(cv2.__file__). Finally, read about the library the

  • Windows or Unix?

1 answer

0

Just use the OS module is very easy:

notice that you currently save like this:

elif k == ord('s'):
    cv2.imwrite(file1,img1)
    emLoop= False

we can add the following procedure:

elif k == ord('s'):
    if os.path.isdir('C:/caminho/do/diretorio'):
         cv2.imwrite('C:/caminho/do/diretorio/{}'.format(file1),img1)
    else:
        os.makedirs('C:/caminho/do/diretorio')
        cv2.imwrite('C:/caminho/do/diretorio/{}'.format(file1),img1

    emLoop= False

With this it will check if the directory exists. if it exists it is saved in it. if it does not exist it will create it.

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