Region.find_all(Image(...)) with contour finder returns negative Y

[jirutka]

GlobalConfig.display_control_backend = 'vncdotool'
GlobalConfig.find_backend = 'contour'

guibot = GuiBot()

for match in guibot.find_all(Image('button-contour.png')):
   print(match.target)

(524.0, -363.0)
(624.0, -328.0)
(1493.0, -605.0)

Generated match file:

# IMAGE MATCH DATA
[type]
backend = cv

[find]
backend = contour
similarity = <value='0.8' min='0.0' max='1.0' delta='10.0' tolerance='1.0' fixed='True' enumerated='False'>

[contour]
backend = mixed
retrievalMode = <value='2' min='1' max='4' delta='10.0' tolerance='1.0' fixed='True' enumerated='True'>
approxMethod = <value='2' min='1' max='4' delta='10.0' tolerance='1.0' fixed='True' enumerated='True'>
minArea = <value='0' min='0' max='None' delta='100.0' tolerance='1.0' fixed='True' enumerated='False'>
contoursMatch = <value='1' min='1' max='3' delta='10.0' tolerance='1.0' fixed='True' enumerated='True'>

[threshold]
backend = adaptive
blurType = <value='4' min='1' max='4' delta='10.0' tolerance='1.0' fixed='True' enumerated='True'>
blurKernelSize = <value='5' min='1' max='None' delta='100.0' tolerance='1.0' fixed='True' enumerated='False'>
blurKernelSigma = <value='0' min='0' max='None' delta='100.0' tolerance='1.0' fixed='True' enumerated='False'>
thresholdMax = <value='255' min='0' max='255' delta='20.0' tolerance='1.0' fixed='True' enumerated='False'>
adaptiveMethod = <value='1' min='0' max='1' delta='10.0' tolerance='1.0' fixed='True' enumerated='True'>
thresholdType = <value='1' min='0' max='1' delta='10.0' tolerance='1.0' fixed='True' enumerated='True'>
blockSize = <value='11' min='3' max='None' delta='200.0' tolerance='2.0' fixed='True' enumerated='False'>
constant = <value='2' min='-255' max='255' delta='1.0' tolerance='1.0' fixed='True' enumerated='False'>

Am I doing something wrong or is it a bug?

[pevogam]

Hi @jirutka, I think part of your reproducer is missing here. In particular VNCDoTool requires additional setup like VNC ports and such. Would you mind sharing the complete code so that I can try to reproduce your case? Also have you taken a look at the VNCDoTool version we support (in the pip requirements) and try exactly that one? This is also the version we test with and use in production.

[pevogam]

One more thing, could you try to run the test_contour_same and test_contour_nomatch unit tests in your environment? Do these tests pass or do they reveal something else?