imwrite write on usb drive [closed]

asked 2019-03-18 16:04:36 -0500

lucacc gravatar image

updated 2019-03-19 03:47:18 -0500

Hi, I'm trying to write, in Python, an image on a USB drive using "imwrite" function. This is my code:

       _, img =
       global img_counter
       img_name = "snapshot/opencv_frame_{}.png".format(img_counter)

In this way I write an image in a folder. If I put:

  img_name = "/mnt/usbdrive/imgtest/opencv_frame_{}.png".format(img_counter)

like path (obviously after the mounting), the image is not saved on usb drive.

Any idea?

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Closed for the following reason the question is answered, right answer was accepted by lucacc
close date 2019-03-28 09:41:39.272221


broken indentation in the code above. (or -- what happens, if Camera.flags<=0 ?)

berak gravatar imageberak ( 2019-03-19 02:05:56 -0500 )edit

sorry, the code is a piece of entire program and It was very late when I wrote this post... Please look now...

lucacc gravatar imagelucacc ( 2019-03-19 03:48:17 -0500 )edit
  • Does img contain data in a 3 channel color format? If not, you'll need to convert the color format
  • Does img_counter have integer data in it from elsewhere in your program? if not, it needs to be initialized
  • Does the program/user have permissions to
    • access each element in the directory path /mnt/usbdrive/imgtest?
    • write the folder /mnt/usbdrive/imgtest?
    • create/write a file in /mnt/usbdribe/imgtest/<img_name>?
opalmirror gravatar imageopalmirror ( 2019-03-26 04:51:37 -0500 )edit