Question #255516 on Sikuli changed:
https://answers.launchpad.net/sikuli/+question/255516
RaiMan posted a new comment:
--- getColor is available in the Sikuli API 1.0.1+
org.sikuli.script.Location.getColor()
which returns a Java Color object.
I made some tests last year with it: for only one pixel it is rather
fast, but if one decides to check some more pixels the time consumed is
simply time-for-one-pixel * number-of-pixels, which does not make sense
for more than some ten pixels, since the check of an image 10x10 against
an even sized or slightly larger region is only some milli-seconds.
--- some kind of CRC against the raw pixel data
this is similar, to what OpenCV matchTemplate does.
I just made a test with version 1.1.0:
for an observed region of about 20x20 pixels it takes on average about 3 - 5
milli-seconds for a check.
So you have a scan rate of about 200+ per second, which should not be
necessary, about 50 should be sufficient.
this is my test script:
img = Pattern("1412875178325.png").exact()
reg = exists(img)
i = 0
start = time.time()
while True:
if reg.exists(img, 0):
wait(0.01)
i += 1
else:
print i, (time.time()-start)/i
break
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