Python OpenCV convert image to byte string?

Question

I\'m working with PyOpenCV. How to convert cv2 image (numpy) to binary string for writing to MySQL db without a temporary file and imwrite?

I googled it

Answer 1

im = cv2.imread('/tmp/sourcepic.jpeg')
res, im_png = cv2.imencode('.png', im)
with open('/tmp/pic.png', 'wb') as f:
    f.write(im_png.tobytes())