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Dynamically generating a QR code with PHP [closed]
...ust have the src of an image point to the manipulated value, like so:
<img src="https://chart.googleapis.com/chart?chs=300x300&cht=qr&chl=http%3A%2F%2Fwww.google.com%2F&choe=UTF-8" title="Link to Google.com" />
Demo:
...
How to resize an image with OpenCV2.0 and Python2.6
...shrink image to fit a max height/width (keeping aspect ratio)
import cv2
img = cv2.imread('YOUR_PATH_TO_IMG')
height, width = img.shape[:2]
max_height = 300
max_width = 300
# only shrink if img is bigger than required
if max_height < height or max_width < width:
# get scaling factor
...
CSS background image alt attribute
...ked resource:
alt
The alt attribute is defined in a set of tags (namely, img, area and optionally for input and applet) to allow you to provide a text equivalent for the object.
A text equivalent brings the following benefits to your website and its visitors in the following common situations:
no...
How can I change the image displayed in a UIImageView programmatically?
...ad()
}
@IBAction func myAction(sender: UIButton) {
let newImg: UIImage? = UIImage(named: "profile-picture-name")
self.myUIImageView.image = newImg
}
@IBAction func myAction2(sender: UIButton) {
self.myUIImageView.image = nil
self.myUIImageView.image ...
Display image as grayscale using matplotlib
... an image in gray is
from matplotlib.colors import NoNorm
...
plt.imshow(img,cmap='gray',norm=NoNorm())
...
Let's see an example:
this is the origianl image:
original
this is using defaul norm setting,which is None:
wrong pic
this is using NoNorm setting,which is NoNorm():
right pic
...
Extracting text OpenCV
...de "opencv2/opencv.hpp"
std::vector<cv::Rect> detectLetters(cv::Mat img)
{
std::vector<cv::Rect> boundRect;
cv::Mat img_gray, img_sobel, img_threshold, element;
cvtColor(img, img_gray, CV_BGR2GRAY);
cv::Sobel(img_gray, img_sobel, CV_8U, 1, 0, 3, 1, 0, cv::BORDER_DEFAULT)...
Rails 3.1 and Image Assets
...
when referencing images in CSS or in an IMG tag, use image-name.jpg
while the image is really located under ./assets/images/image-name.jpg
share
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angularjs: ng-src equivalent for background-image:url(…)
...directive that does exactly what you want. For example
app.directive('backImg', function(){
return function(scope, element, attrs){
var url = attrs.backImg;
element.css({
'background-image': 'url(' + url +')',
'background-size' : 'cover'
});
}...
How to have jQuery restrict file types on upload?
...folder with different extension. as you can see here -> imageshack.us/a/img20/8451/switchzz.jpg
– bernte
May 24 '13 at 18:38
...
UIButton won't go to Aspect Fit in iPhone
...tion, as in the following method:
- (UIImage *) getScaledImage:(UIImage *)img insideButton:(UIButton *)btn {
// Check which dimension (width or height) to pay respect to and
// calculate the scale factor
CGFloat imgRatio = img.size.width / img.size.height,
btnRatio = btn.f...