Runtime error when saving a picture in “WQXGA2” resolution in PNG format

OpenMV Products
1

hi
I have a problem with saving a picture in “WQXGA2” resolution in PNG because it doesnt compress the picture file and it shows “RuntimeError: memory allocation failed” even when I use an SD card.
consider that there is no problem when I use the code to save HD picture.
here is the code I use:

import sensor, image, time

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.WQXGA2)
sensor.skip_frames(time = 2000)
clock = time.clock()

while(True):
clock.tick()
img = sensor.snapshot()
img.save(“image.png”)
break

thanks for helping me.

2

Hmmm,

PNGs are made for computer graphics. Please save using JPG. Yes, this is a bug with the PNG code which is experimental right now. But, you shouldn’t use PNG for anything other than reading image file logos and the like.

I’ll note this as a bug that needs to be fixed.

3

thanks for your quick answer.
but I need an incompressed picture. jpg format decreases the image files size and compresses it.

Screenshot 2023-08-04 142847
Screenshot 2023-08-04 1428471879×951 13.2 KB

as you can see the big squares when you zoom in the image are because of that.
I hope if you could suggest a faster solution for this problem.

4

Use the bmp file format. Just save with .bmp.

5

yes that works
thank you alot