Article Introduction：Comparing Image Similarity with PHP GDWhen comparing images for file integrity, MD5 hashing provides a straightforward solution. However, the question arises: can PHP GD be employed to assess image similarity beyond file identification?Comparing Pixe

2024-10-17 comment 0  223

Article Introduction：I'm trying to understand/understand why I can't compare two identical net.Addr. From this post, it seems like two interfaces should be able to compare if they have the same underlying type and that type can be compared. In the following example, the underlying type is net.UDPAddr. It is a structure containing string, int and net.IP. net.IP is the type alias of []byte. Is it because slice IP is not comparable? Even if it's the same type, length and content? Example: https://go.dev/play/p/dIzRCTwBA4P

2024-02-12 comment 0  758

Article Introduction：Simple version of image similarity comparison implemented in PHP. Comparison of simple version of image similarity implemented in PHP. Since the API implemented in PHP for similar image search is not very suitable for my purposes, I redefined the API structure and rewritten it into a simpler one.

2016-07-13 comment 0  1414

Article Introduction：Use PHP to automatically crop. Compared with the image address /a/a_0.jpg you have seen, it converts the image address into an address similar to the one above where the image is needed, and then directs it to the address through apache's rewrite a handler. Generate a picture based on the width and height and save it for processing.

2019-10-15 comment 0  2867

Article Introduction：K-means is a commonly used algorithm in machine learning. It is an unsupervised learning algorithm. It is often used for data clustering. You only need to specify the number of clusters for it to automatically aggregate data into multiple categories. The same clusters The similarity of data in is higher, and the similarity of data in different clusters is lower. The K-MEANS algorithm is an algorithm that inputs the number of clusters k and a database containing n data objects, and outputs k clusters that meet the minimum variance criterion. The k-means algorithm accepts an input quantity k; then divides n data objects into k clusters so that the obtained clusters satisfy: the similarity of objects in the same cluster is higher; and the similarity of objects in different clusters is smaller.

2017-12-06 comment 0  1924

Article Introduction：Nowadays, mobile phones have relatively high pixels, and a photo taken at random costs several megabytes or even more than ten megabytes. When there are too many photos, the memory of the mobile phone will be exhausted! Compressing image size is actually very easy, whether it is on WeChat or QQ. Just send the picture to a friend or to the news feed, make sure not to choose to send the original picture, and then save the photo after sending to complete the compression. This can effectively reduce the file size of the image and facilitate transmission and storage on the network. This operation is simple and easy, suitable for situations where you need to reduce the size of pictures, helping to save storage space and speed up transmission. The saved image will be much smaller than the original image, and the resolution will be very good. Although this method is relatively simple, when you need to compress a lot of pictures, send them all and save them one by one.

2024-03-16 comment 0  1288

Article Introduction：similar:similar PHP similar_text string similarity comparison function: PHP provides a rarely used similar_text function, but this function is very useful for comparing two strings and returning the percentage of similarity. The following is the similar_text () function How to use: Copy the code. The code is as follows: similar_text($string1, $string2, $percent); //After using this function, we get the similarity percentage of the two strings just compared from the variable $percent.

2016-07-29 comment 0  1325

Article Introduction：Use PHP and coreseek to implement intelligent image search function Summary: This article will introduce how to use PHP and coreseek open source search engine library to implement intelligent image search function. Through feature extraction and similarity comparison of images, we can quickly find similar images in a large number of images. In addition, we will also use the full-text search function of coreseek to realize the function of searching pictures based on keywords. Keywords: PHP, coreseek, image search, feature extraction, phase

2023-08-08 comment 0  1197

Article Introduction：In PHP, double equals (==) and triple equals (===) are comparison operators used to compare values ​​for equality. However, they differ in their behavior and the rigor of the comparison process. Double equals (==) The double equals operator checks for equality between two values, but performs type coercion if the two values ​​have different data types. This means that PHP will try to convert the value to a generic type before performing the comparison. Here are some key points about the double equality operator: If two values ​​have the same type, it behaves like the triple equality operator (strict comparison). If two values ​​have different types, PHP will try to convert them to a common type. For example, if you compare an integer and a string, PHP will try to convert the string

2023-09-07 comment 0  1475

Article Introduction：Introduction PHP has a comparison operator == with which you can perform a simple comparison of two object variables. Returns true if both belong to the same class and the values ​​of the corresponding properties are the same. PHP's === operator compares two object variables and returns true if and only if they refer to the same instance of the same class. We use the following two classes to compare objects with these operator examples <?phpclasstest1{ private$x; private $y; function__constru

2023-08-30 comment 0  1375

Article Introduction：php zip file comparison class, compares the contents of two zip files, and returns a list of new, deleted, and identical files. Currently only single layer is supported. Requirement: Upload a zip file with many image files in the zip. A series of time-consuming processing is required on the image files. When the user updates the zip file. Determine whether the files in the zip are consistent and only process different files. This can save resources and time, so you need to write a class that can compare files in the zip.

2018-06-09 comment 0  2317

Article Introduction：User-defined classes are also one of the necessary conditions for learning PHP well. Classes in PHP are relatively simple compared to classes in other object-oriented languages. PHP only has classes, methods, attributes, single inheritance (extensions), etc. In PHP, it is very simple to create a class. You only need the keyword class. The definition of the simplest class is as follows:

2017-06-28 comment 0  2098

Article Introduction：Using PHP to Compare Image Content for SimilarityDetermining the similarity of two images using PHP is a common challenge. While MD5 hashes provide a convenient way to compare files, they fall short when it comes to detecting visual differences.Chall

2024-10-17 comment 0  564

Article Introduction：The implementation mainly includes two classes, one is to generate the verification code, and the other is to determine whether the verification code input is correct. The implementation principle is relatively simple. Generate pictures of Chinese characters and interference lines and save the Chinese characters to the session. The front desk obtains the verification code picture generated each time. For display, during verification, the value entered in the text box is obtained and sent to the background for comparison with the session value. The function is as simple as that. 1. Class for generating Chinese character verification codes package com.veryCode; import java.awt.Color; import java.aw ...

2016-12-02 comment 0  3945

Article Introduction：:php similar_text: The php similar_text() function calculates and compares the similarity of two strings. This article introduces the basic usage methods and basic usage examples of the php similar_text() function to coders. Interested coders can refer to it. Definition and Usage The similar_text() function calculates the similarity of two strings. This function can also calculate the percentage similarity of two strings. Note: levenshtein() function is faster than similar_text() function. However, similar_te

2016-07-29 comment 0  1149

Article Introduction：The php similar_text() function calculates and compares the similarity of two strings. This article introduces the basic usage methods and basic usage examples of the php similar_text() function to coders. Interested coders can refer to it. Definition and Usage The similar_text() function calculates the similarity of two strings. This function can also calculate the percentage similarity of two strings. Note: levenshtein() function is faster than similar_text() function. However, simi...

2017-06-15 comment 0  1429

Article Introduction：The php similar_text() function calculates and compares the similarity of two strings. This article introduces the basic usage methods and basic usage examples of the php similar_text() function to coders. Interested coders can refer to it. Definition and Usage The similar_text() function calculates the similarity of two strings. This function can also calculate the percentage similarity of two strings. Note: levenshtein() function is faster than similar_text() function. However, simi...

2017-06-12 comment 0  1380

Article Introduction：Method of using PHP and Qiniu cloud storage interface to realize image feature extraction and similarity matching Introduction: In today's Internet era, the use of image data is becoming more and more widespread. How to effectively manage and retrieve large amounts of image data has become an important issue. question. Image feature extraction and similarity matching are one of the core technologies to achieve efficient image retrieval. This article will introduce how to use PHP and Qiniu cloud storage interface to implement image feature extraction and similarity matching. 1. Introduction to Qiniu Cloud Storage Qiniu Cloud Storage is a well-known cloud storage service in China.

2023-07-06 comment 0  1666

Article Introduction：The way PHP implements image compression while maintaining clarity is: you can encapsulate an image compression class, and compress the image by scaling in the compression class. First, copy the original image to the image carrier and compress it according to a certain ratio to greatly maintain the clarity, and then save the image to the hard disk.

2019-12-14 comment 0  5429

Article Introduction：The method for uploading images in PHP is: 1. Create an HTML static page; 2. Add a form and a control of type file; 3. Create an imageuplad file and obtain the name, size and type of the image; 4. Compare the permissions for uploading images Type and size.

2019-09-21 comment 0  4593