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Convert string in base64 to image and save on filesystem in Python
I have a string in base64 format, which represents PNG image. Is there a way to save this image to the filesystem, as a PNG file?
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Rails: How to reference images in CSS within Rails 4
... the proper name adjusted. Here's what I mean. I have a file called logo.png. Yet when it shows up on heroku it is viewed as:
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Do I need Content-Type: application/octet-stream for file download?
...ine the use of Content-Disposition with other content-types, such as image/png or even text/html to indicate you want saving rather than display. It used to be the case that some browsers would ignore it in the case of text/html but I think this was some long time ago at this point (and I'm going to...
Can I set background image and opacity in the same property?
...
Two methods:
Convert to PNG and make the original image 0.2 opacity
(Better method) have a <div> that is position: absolute; before #main and the same height as #main, then apply the background-image and opacity: 0.2; filter: alpha(opacity=2...
How can I convert an RGB image into grayscale in Python?
...about doing it with Pillow:
from PIL import Image
img = Image.open('image.png').convert('LA')
img.save('greyscale.png')
Using matplotlib and the formula
Y' = 0.2989 R + 0.5870 G + 0.1140 B
you could do:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.image as mpimg
de...
Google Chrome Extensions - Can't load local images with CSS
...ipt. From docs:
//Code for displaying <extensionDir>/images/myimage.png:
var imgURL = chrome.extension.getURL("images/myimage.png");
document.getElementById("someImage").src = imgURL;
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Images can't contain alpha channels or transparencies
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AFAIK png with transparency is not allowed. use jpg OR update your png (photoshop or whatever you using to create the png) and delete the transparency areas. if you work with shadows, use jpg, that will do no headaches.
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c++11 智能指针回调的经典场景 - C/C++ - 清泛网 - 专注C/C++及内核技术
...调的经典场景c++11_shared_ptr_callbackc++11 智能指针回调经典测试案例，当回调函数需要使用原对象指针时不确定原对象是否已经释放，这时必须使用智能指针了，代码如下： includ c++11 智能指针回调经典测试案例，当回调函数需要...
正则表达式 不包含指定字符串 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...此我们这里采用否定式前瞻来实现我们的需求。
实现
测试数据：
2009-07-07 04:38:44 127.0.0.1 GET /robots.txt
2009-07-07 04:38:44 127.0.0.1 GET /posts/robotfile.txt
2009-07-08 04:38:44 127.0.0.1 GET /
例如上面这几条简单的日...
PHP连接MySQL报错：Fatal error: Call to undefined function mysql_connec...
...l to undefined function mysql_connect()之解决方法【问题描述】PHP测试连接MySQL的程序如下：<?php$host='localhost';$user_name='root';$password='mysql';$conn=m...【问题描述】
PHP测试连接MySQL的程序如下：
<?php
$host='localhost';
$user_name='root';
$password='m...