Hi All,
For my project the routine looks at various images having text and/or pictures.
These can be white on light background but also black on a darkgreen background ( any many more variations )
I have seen some samples of auto thresholding but they don’t translate 1 on 1 to openmv .
For now I use :
v=img.get_statistics().l_median()
lower = int( v/7) # Value 7 is based on trying as is 2.5 )
upper = int( v/2.5)
print(v,upper,lower)
edgethreshold= (lower, upper)
img.find_edges(image.EDGE_CANNY, threshold=edgethreshold)
It seems to do the job quit nice but I wonder if there is a better way ?
Thx