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How to crop an image in OpenCV using Python

...hould crop_img = img[y:y+h, x:x+w].copy() – user1270710 Oct 27 '18 at 0:46 2 @javadba numpy imple...
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What is a 'semantic predicate' in ANTLR?

...al type of predicate is a disambiguating semantic predicate, which looks a bit like a validating predicate ({boolean-expression}?), but acts more like a gated semantic predicate (no exception is thrown when the boolean expression evaluates to false). You can use it at the start of a rule to check s...
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Gradle does not find tools.jar

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What is the difference between HTTP_HOST and SERVER_NAME in PHP?

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Can you nest html forms?

...a page but they should not be nested. From the html5 working draft: 4.10.3 The form element Content model: Flow content, but with no form element descendants. share | improve this an...
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PHP Fatal error: Cannot redeclare class

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HTML5 Canvas Resize (Downscale) Image High Quality?

....getContext('2d'). getImageData(0, 0, sw, sh).data; // source buffer 8 bit rgba var tBuffer = new Float32Array(3 * tw * th); // target buffer Float32 rgb var sR = 0, sG = 0, sB = 0; // source's current point r,g,b /* untested ! var sA = 0; //source alpha */ for (sy = ...
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What are Flask Blueprints, exactly?

... | edited Feb 27 '19 at 10:27 pfabri 48255 silver badges1717 bronze badges answered Jun 26 '14 at 1:11...
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Rails raw SQL example

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Python circular importing?

...jpmc's answer that you should refactor the module organization is probably 100% correct. Either move class B into module a, or move class C into module b so you can break the cycle. It's also worth noting that even if only one direction of the circle has top-level code involved (e.g. if class C didn...