I am trying to extract lane boundary lines from two recorded video cameras on the sides of the vehicle. I would ultimately like to calculate lane position from those boundaries.

My thought process is:

  • Convert the video to a series of images.
  • Convert images to grayscale.
  • Identify the portion of the image that has white as opposed to asphalt.
  • Filter unwanted pixels out of the video leaving mostly the lane.
  • Calibrate my camera, so I can know how much 1 pixel is distance wise.
  • Then do the calculations by byte locations in Python to determine the distance.

Does anyone have a recommendation for a image file format? I recall there was a format that has no compression or header. It was basically each pixel had a value from $0$ to $255$ ($0$ is black, $255$ is white I believe), and the byte location in the file represented the pixel. So if you had an image of $640\times 480$ you would have that many bytes.

  • $\begingroup$ why would you use a file format for that? Typically, decompression of video is way faster than reading from a hard drive, and if you store uncompressed images on your permanent storage, faster media like SSDs won't be affordable. I think you might be worrying about the wrong things – it'll be helpful to store the video as sequence of images, but I'd simply use the file format that the libraries you're using support. I really see nil positive effect of storing things uncompressed. Any image processing library can read a few standard image formats, or you just go ahead and use a separate lib. $\endgroup$ – Marcus Müller Mar 28 '17 at 12:31
  • $\begingroup$ Im doing the analysis post process, so I dont really care for storage and that particular format is easy to work with since I can locate byte locations in relation to space very easy. If I was trying to read lane detection in real-time I would 100% try to use images/video with compression. $\endgroup$ – ChipsAhoy Mar 28 '17 at 13:03
  • $\begingroup$ Please don't ask the exact same question twice. (Edit: the duplacate question has been removed). $\endgroup$ – MBaz Mar 28 '17 at 13:30

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Browse other questions tagged or ask your own question.