Summary of 10 image library examples

What we are going to learn today is how to use Python to generate a random Chinese verification code and save the image in .jpeg format. Friends who need it can refer to it. Before doing this, you must first understand the PIL library in Python. PIL is the abbreviation of Python Imaging Library. PIL is a Python library for image processing. It provides a series of modules and methods, such as: cropping, translation, rotation, changing size, etc. In the PIL library, any image is represented by an Image object, so to load an image, the simplest form is as follows: from PIL import Image image = Image.open("1.jpeg") In the PIL library, the most commonly used modules are Image, ImageDraw, ImageEnhance, ImageFile, etc. The download address of PIL is: http://www.pythonware.com/products/pil/Continue

1. Talk about the implementation method of Chinese verification code example tutorial

Introduction: What we are going to learn today is how to use Python to generate a random Chinese verification code and save the image as .jpeg format, friends in need can refer to it. Before doing this, you must first understand the PIL library in Python. PIL is the abbreviation of Python Imaging Library. PIL is a Python library for image processing. It provides a series of modules and methods, such as: cropping, translation, rotation, changing size, etc. In the PIL library, any image is represented by an Image object, so you need to load an image...

2. About Uploads usage examples summary

#Introduction: $competition_image = $_FILES['competition_image'];// Get the uploaded batch of files       $file = 'uploads/ext_masterdata/doors/';//Upload the price to the target directory    ;&am

Detailed introduction to animation forms

##Introduction: The main knowledge used in this article This article mainly uses the drawImage method in the Canvas API. This method is briefly introduced below. To draw an image in the Canvas API, use the drawImage method, which is an overloaded method defined as follows: context.drawImage(image,x,y);context.drawImage(image,x,y,w,h);context.drawImage( image,sx,sy,sw,sh,...

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Introduction: CSS3 vw unit Paste_Image.png100vw = 100% window width 100vh = 100% window height to achieve an adaptive square (container with fixed aspect ratio) ) will be quite simple![lang=stylus].box  width 10vw  height 10vw Since it is a new unit, there will inevitably be compatibility issues.[lang=jade].i...

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##Introduction: How to use the GD2 function to add text to pictures (Typical application tutorial of PHP graphics and images 2) The GD library in PHP supports Chinese, but it must be transmitted in UTF-8 encoding format. If you use imagesString( ) function will directly draw Chinese characters, which will cause garbled characters. This is because GD2 can only accept UTF-8 encoding format for Chinese, and uses English fonts by default. Therefore, to output Chinese strings, the Chinese string must be transcoded and set to Chinese The font used for the string, otherwise, the output will only be garbled characters! In the previous article...

##6. Detailed introduction to border images

Introduction: rounded corners: border-radius shadow: box-shadow border image: border-image box subtraction: box-sizing: border-box; rounded corners: border-radius: pixel/percentage one value setting The horizontal and vertical radii of the four corners of the box can be set separately for each corner. The value order is upper left, upper right, upper right, lower right, lower left, and clockwise setting can be abbreviated. The logic is the same as padding and margin. The units support pixels and percentages (refer to The width is...

7. Change the entire interface of the website and web page into black and white and gray css code

Introduction: Not much to say, please look at the code to turn the website or web page into black and white Web page black and white code external style ** Please write to the .css file Use * html {filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);-webkit-filter: grayscale(100%);}123

8. Colored web page becomes black and white CSS code