What's the --scale option means when run the demo.py?

Question

What's the --scale option means when run the demo.py?

LiZhenLiangLee opened this issue 4 years ago · comments

李振梁 commented 4 years ago

If the size of my input image is not 640x480, can you tell me how to set the --scale option ？an example？

李振梁 · Answer 1 · Fri Dec 13 2019 17:04:18 GMT+0800 (China Standard Time)

And the --scale set to 1.0 if input image's size is 640x480, right?

Michaël Ramamonjisoa · Answer 2 · Fri Dec 13 2019 20:30:37 GMT+0800 (China Standard Time)

Hi, thanks for your interest!
The scale option is a scale factor applied to the original dimensions of the image.
If your input image size is 1280x960, using --scale 0.5 would scale it down to 640x480.
If your input image size is 320x240, using --scale 2 would scale it up to 640x480.

Generally, if you set --scale S, S being a float number, and your original resolution is WxH, the rescaled input (and output) will be of size SW x SH.

李振梁 · Answer 3 · Mon Dec 16 2019 09:35:47 GMT+0800 (China Standard Time)

Hi, thanks for your interest!
The scale option is a scale factor applied to the original dimensions of the image.
If your input image size is 1280x960, using --scale 0.5 would scale it down to 640x480.
If your input image size is 320x240, using --scale 2 would scale it up to 640x480.

Generally, if you set --scale S, S being a float number, and your original resolution is WxH, the rescaled input (and output) will be of size SW x SH.

thanks for reply