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Python OpenCV2 (cv2) wrapper to get image size?
... width, channels = img.shape
>>> print height, width, channels
600 800 3
In case you were working with binary images, img will have two dimensions, and therefore you must change the code to: height, width = img.shape
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Rails - controller action name to string
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answered Nov 25 '10 at 6:11
JellicleCatJellicleCat
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How do you do natural logs (e.g. “ln()”) with numpy in Python?
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np.log is ln, whereas np.log10 is your standard base 10 log.
Relevant documentation:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.log.html
http://docs.scipy.org/doc/numpy/reference/generated/numpy.log10.html
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Why does “while(true)” without “Thread.sleep” cause 100% CPU usage on Linux but not on Windows?
...Let's say you have 4 cores:
With IRIX mode on, 1 fully utilized core is 100% and 4 cores are 400%.
With IRIX mode off, 1 fully utilized core is 25% and 4 cores are 100%.
This means that by default, top on Linux will show an infinite loop as ~100% and Windows will show it as ~25%, and it means ...
jQuery - If element has class do this
...l:
if ($("#about").hasClass("opened")) {
$("#about").animate({right: "-700px"}, 2000);
}
But you can also simplify this to:
$('#about.opened').animate(...);
If #about doesn't have the opened class, it won't animate.
If the problem is with the animation itself, we'd need to know more about y...
Initializing a two dimensional std::vector
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208
Use the std::vector::vector(count, value) constructor that accepts an initial size and a defaul...
VideoRecorder 拓展：前台预览录制 + 后台无预览录制，支持分辨率、码率设...
...否启用闪光灯，默认 false
CameraOrientation
摄像头方向（0/90/180/270），默认自动检测
Quality
视频画质预设，默认 HIGHEST。支持 HIGHEST、LOWEST、720P、1080P、480P、1920x1080 等
BitRate
视频编码码率（bps），默认 0 自动根据分辨率计...
How can I find out what version of git I'm running?
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GarethGareth
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Can I checkout github wikis like a git repository?
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Arkku
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answered Aug 14 '10 at 15:57
Max MasnickMax Masni...
Navigation drawer - disable swipe
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answered Jul 27 '13 at 20:48
h4rd4r7c0r3h4rd4r7c0r3
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