Difference between revisions of "PlayChessWithAWebCam/DetectState"
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| − | = | + | {{:PlayChessWithAWebCam/Links}} |
| + | = State transitions = | ||
<graphviz> | <graphviz> | ||
digraph detection2 { | digraph detection2 { | ||
| − | calibrating -> calibrating [ label=" | + | calibrating -> calibrating [ label="not stable or less than calibrationWindow times calibrating" ] |
| − | calibrating -> preMove [ label=" | + | calibrating -> preMove [ label="stable and more than calibrationWindows times calibrating" ] |
| − | preMove -> preMove [ label=" | + | preMove -> preMove [ label="stable" ] |
| − | preMove -> inMove [ label="" ] | + | preMove -> inMove [ label="not stable" ] |
| − | inMove->inMove | + | inMove->inMove [ label="not stable or difference of pixelChanges>10% of peak inMove value" ] |
| − | inMove -> potentialMove [ label="" ] | + | inMove -> potentialMove [ label="stable and difference of pixelChanges<10% of peak inMove value" ] |
} | } | ||
</graphviz> | </graphviz> | ||
| + | |||
| + | = Relevant Source parts = | ||
<source lang='python'> | <source lang='python'> | ||
class ImageChange: | class ImageChange: | ||
| Line 47: | Line 50: | ||
self.onMoveDetected(cbImageSet) | self.onMoveDetected(cbImageSet) | ||
</source> | </source> | ||
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Latest revision as of 13:10, 18 December 2019
Click here to comment see PlayChessWithAWebCam
State transitions
Relevant Source parts
class ImageChange:
...
def isStable(self):
delta=abs(self.movingAverage.gradient())
stable=delta<ImageChange.gradientDelta
if stable:
self.stableCounter+=1
else:
self.stableCounter=0
return stable
...
class SimpleDetector:
def updateState(self,cbImageSet):
calibrationWindow=5
ic=self.imageChange
ics=ic.changeState
if ics==ChangeState.CALIBRATING:
# leave calibrating when enough stable values are available
if ic.isStable() and ic.stableCounter>=calibrationWindow:
ic.changeState=ChangeState.PRE_MOVE
elif ics==ChangeState.PRE_MOVE:
if not ic.isStable():
ic.changeState=ChangeState.IN_MOVE
ic.minInMove=ic.pixelChanges
ic.maxInMove=ic.pixelChanges
elif ics==ChangeState.IN_MOVE:
ic.maxInMove=max(ic.maxInMove,ic.pixelChanges)
peak=ic.maxInMove-ic.minInMove
dist=ic.pixelChanges-ic.minInMove
if peak>0:
relativePeak=dist/peak
if ic.isStable():
if relativePeak<0.1:
self.onMoveDetected(cbImageSet)