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OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
...20 11:29:30 CST
import cv2
import numpy as np
##(1) read into bgr-space
img = cv2.imread("test2.jpg")
##(2) convert to hsv-space, then split the channels
hsv = cv2.cvtColor(img, cv2.COLOR_BGR2HSV)
h,s,v = cv2.split(hsv)
##(3) threshold the S channel using adaptive method(`THRESH_OTSU`) or fixed...
Rotated elements in CSS that affect their parent's height correctly
...t;/div>
</div>
<p>Even more text</p>
<img src="https://i.stack.imgur.com/ih8Fj.png">
<div class="rotation-wrapper-outer">
<div class="rotation-wrapper-inner">
<img class="element-to-rotate" src="https://i.stack.imgur.com/ih8Fj.png...
Why does an image captured using camera intent gets rotated on some devices on Android?
... = context.getContentResolver().openInputStream(selectedImage);
Bitmap img = BitmapFactory.decodeStream(imageStream, null, options);
img = rotateImageIfRequired(context, img, selectedImage);
return img;
}
Here is the CalculateInSampleSize method from the pre mentioned source:
/**
*...
How to Customize a Progress Bar In Android
...;
etPercent = (EditText) findViewById(R.id.etPercent);
ImageView img = (ImageView) findViewById(R.id.imageView1);
mImageDrawable = (ClipDrawable) img.getDrawable();
mImageDrawable.setLevel(0);
}
private void doTheUpAnimation(int fromLevel, int toLevel) {
mLevel += LEVEL_DIFF;
...
Hidden features of HTML
...
Using a protocol-independent absolute path:
<img src="//domain.com/img/logo.png"/>
If the browser is viewing an page in SSL through HTTPS, then it'll request that asset with the https protocol, otherwise it'll request it with HTTP.
This prevents that awful "This P...
Displaying the Indian currency symbol on a website
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and I see this does not work on my FF 3.6 i.imgur.com/V8fnG.png go fix it.
– ankitjaininfo
Aug 30 '10 at 16:57
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HTML5 Canvas Resize (Downscale) Image High Quality?
...1
// returns a canvas containing the scaled image.
function downScaleImage(img, scale) {
var imgCV = document.createElement('canvas');
imgCV.width = img.width;
imgCV.height = img.height;
var imgCtx = imgCV.getContext('2d');
imgCtx.drawImage(img, 0, 0);
return downScaleCanvas(...
Display text on MouseOver for image in html
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You can use title attribute.
<img src="smiley.gif" title="Smiley face"/>
You can change the source of image as you want.
And as @Gray commented:
You can also use the title on other things like <a ... anchors, <p>, <div>, <input&g...
App Inventor 2 其他参考资料 · App Inventor 2 中文网
...lumn; align-items: center; } .feedback-pop:hover, .feedback-pop .feedback-img:hover { color: #3773f5 } .feedback-pop .feedback-img { display: inline-block; width: 24px; height: 24px; margin-bottom: 4px; background: url(/static/images/feedback.svg) 50% / 100% auto no-repeat; } /*手机版：...
App Inventor 2 实现蓝牙未开启时弹窗提醒用户开启蓝牙 · App Inventor 2 中文网
...lumn; align-items: center; } .feedback-pop:hover, .feedback-pop .feedback-img:hover { color: #3773f5 } .feedback-pop .feedback-img { display: inline-block; width: 24px; height: 24px; margin-bottom: 4px; background: url(/static/images/feedback.svg) 50% / 100% auto no-repeat; } /*手机版：...