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PHP file Upload class can generate thumbnail code _php tutorial

_allow_types)) { if (array_key_exists ($wminfo [' MIME '], $GD _allow_types)) { Create an image from a file $temp = $gd _allow_types[$fileinfo [' MIME ']] ($file); $temp _wm = $gd _allow_types[$wminfo [' MIME ']] ($this->watermark_file); Watermark Location Switch ($this->watermark_pos) { Case 1://Top Left $DST _x = 0; $DST _y = 0; Break Case 2://Top Center $

PHP image upload class, support watermark-date folder-Generate thumbnails, support multi-file upload

)) { Create an image from a file $temp = $gd _allow_types[$fileinfo [' MIME ']] ($file); $temp _wm = $gd _allow_types[$wminfo [' MIME ']] ($this->watermark_file); Watermark Location Switch ($this->watermark_pos) { Case 1://Top Left $DST _x = 0; $DST _y = 0; Break Case 2://Top Center $DST _x = ($fileinfo [0]

A handy php file upload processing class

/png '] = ' imagecreatefrompng '; if (function_exists (' imagecreatefromjpeg ')) $gd _allow_types[' image/jpeg '] = ' imagecreatefromjpeg '; Get file information $fileinfo = getimagesize ($file); $wminfo = getimagesize ($this->watermark_file); if ($fileinfo [0] if (array_key_exists ($fileinfo [' MIME '], $GD _allow_types)) { if (array_key_exists ($wminfo [' MIME '], $GD _allow_types)) { Create an image from a file $temp = $gd _allow_types[$file

Linux network protocol stack Analysis notes 10-arp neighbor subsystem 3

Still return to neigh_resolve_output () int neigh_resolve_output (struct sk_buff * SKB) {Struct dst_entry * DST = skb_dst (SKB );Struct neighbor * neigh;Int rc = 0; If (! DST |! (Neigh = DST-> neighbor) Exits unexpectedly.Goto discard; _ Skb_pull (SKB, skb_network_offset (SKB )); If (! Neigh_event_send (Neigh, SKB) {checks whether the neighbor item is available.

PHP file Upload class can generate thumbnail code

($this-gt;watermark_file) | | |!file_exists ($file)) return;if (!function_exists (' getimagesize ')) return; Check the file types supported by GD$GD _allow_types = Array ();if (function_exists (' imagecreatefromgif ')) $gd _allow_types[' image/gif '] = ' imagecreatefromgif ';if (function_exists (' imagecreatefrompng ')) $gd _allow_types[' image/png '] = ' imagecreatefrompng ';if (function_exists (' imagecreatefromjpeg ')) $gd _allow_types[' image/jpeg '] = ' imagecreatefromjpeg ';Get file infor

RGB to YUV conversion optimal algorithm, quickly let you surprised!

is more troublesome, but this coefficient can be expressed as: 0.299 = 299/1000;So D = (R * 299)/1000;Y = (R * 299 + G * 587 + B * 114)/1000;This look, how fast can it be?The speed on the Embedded system is 45 seconds;The speed on the PC is 2 seconds;How 0.299 * R can be simplifiedY = 0.299 * R + 0.587 * G + 0.114 * B;Y = (R * 299 + G * 587 + B * 114)/1000;The equation seems a little more complicated, and you can cut off a division operation.The preceding equation D can be written like this:0.2

Access files on HDFS via JAVA-API

1. Pass The core-site.xml configuration file is configured. Configuration item: hadoop. tmp. dir indicates the directory location where metadata is stored on the named node. For data nodes, the directory where file data is stored on the node. Configuration item: FS. default. name indicates the IP address and port number. The default value is file: //. For Java APIs, the configured URL address must be used to connect to HDFS. For data nodes, the data node uses this URL to access the named node.

Arithmetic operation and logical operation of image in OpenCV

-operational results are as follows:The code is as follows:Mat Src1, Src2, DST; Src1 = Imread ("D:/vcprojects/images/test1.png"); SRC2 = Imread ("D:/vcprojects/images/moon.png");Const Char* Input_title1 ="Input image-1";Const Char* Input_title2 ="Input image-2"; Namedwindow (Input_title1, cv_window_autosize); Namedwindow (Input_title2, cv_window_autosize); Imshow (Input_title1, SRC1); Imshow (Input_title2, SRC2);//Create result windows and ba

Php allows you to crop and scale images in the center

height 54 public function getImageHeight () {55 return $ this-> _ height; 56} 57 58/* 59 ** Image cropping 60 ** $ tmp_image source file 61 ** $ dst_w: width of the cropped image 62 ** $ dst_h: height of the cropped image 63 ** $ x crop 64 at the $ x coordinate of the source image ** $ y crop 65 at the $ y coordinate of the source image */66 public function crop ($ tmp_image, $ dst_w, $ dst_h, $ x, $ y, $ path) {67 switch ($ this-> _ type) {68 case 'jpeg ': 69 $ src = imagecreatefromjpeg ($ tmp

Powerful synchronization tool rsync detailed configuration and various gameplay, rsync detailed configuration gameplay

this problem exists in rhel6)List = false -- hide the listMax connections = 1 -- control the maximum number of connectionsHosts allow = 192.168.2.X -- control the access IP AddressRestart serviceSystemctl restart rsyncdRequirement 3: implement real-time synchronization (synchronization is triggered when the source file changes)Inotify + rsyncUnder the note directory/program/inotify_soft/inotify-tools-3.13.tar.gz-software to be installed# Tar inotify-tools-3.13.tar.gz-C/usr/src/# Cd/usr/src/inot

Scale of images in PHP

In the picture save, we do not have to modify the image in PS or other tools, we can also use the code to implement. Here are two examples of the same effect: $sourcefile = "images/1.jpg";//Old map path$dstfile = "images/1_small.jpg";//New map path$arr =getimagesize ($sourcefile);//Get the picture scale so that we don't have to look for the width of the image property again in the directory. $SRC _width= "144";$SRC _height= "200"; You can also customize the zoom scale but too much of the p

PYTHON+OPENCV image Processing (vii)--filtering and fuzzy operation

: https://www.zhihu.com/question/54918332/answer/142137732  First, mean value blur, median blur, user-defined BlurThe code is as follows:#Mean blur, median blur, and custom fuzzy blur are a representation of convolutionImportCv2 as CVImportNumPy as NPdefBlur_demo (image):#mean fuzzy de-random noise has a good effect on drynessDST = Cv.blur (image, (1, 15))#(1, 15) is the vertical direction blur, (15, 1) also horizontal direction blurCv.namedwindow ('Blur_demo', CV. Window_normal) Cv.imshow ("Blu

Turn: The difference between C/c++:memmove, memcpy and strcpy

strcpy can only handle strings, and if you copy strings with special characters, you can only use memcpy or memmove. memcpy and Memmove functions are basically the same, but when the source string and the target string have overlap, memmove can handle correctly, memcpy is not. memcpy () and Memmove () are library functions in the C language, and in the header file String.h, the prototypes are as follows: void *memcpy (void *dst, const voi

PHP can generate thumbnails of file upload class instances _php tips

;watermark_file); if ($fileinfo [0] if (array_key_exists ($fileinfo [' MIME '], $GD _allow_types)) { if (array_key_exists ($wminfo [' MIME '], $GD _allow_types)) { Create an image from a file $temp = $gd _allow_types[$fileinfo [' MIME ']] ($file); $temp _wm = $gd _allow_types[$wminfo [' MIME ']] ($this-gt;watermark_file); Watermark Location Switch ($this-gt;watermark_pos) { Case 1://Top Left $DST _x = 0; $

Python's os,shutil and SYS modules

existsOs.curdir returns the current directory ('. ')Os.mkdir (path) Create a directoryOs.makedirs (path) to create a directory recursivelyOs.chdir (dirname) Change working directory to DirNameOs.path.getsize (name) Gets the file size if name is directory returned 0LOs.path.abspath (name) gets the absolute pathOs.path.normpath (path) canonical path string formOs.path.splitext () detach file name and extensionOs.path.join (path,name) connection directory with file name or directoryOs.path.basenam

A collection of practical methods for OS and shutil modules in Python _python

the given path really exists Os.curdir returns the current directory ('. ') Os.mkdir (path) creates a directory Os.makedirs (path) recursive creation directory Os.chdir (dirname) changes working directory to dirname Os.path.getsize (name) Gets the file size, if name is the directory that returns 0L Os.path.abspath (name) gets absolute path Os.path.normpath (path) specification path string form Os.path.splitext () separate file name and extension Os.path.join (path,name) connection dire

OPENCV Dark Channel image to fog (Mat style code) _OPENCV

--------------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------------------- --------- #include #include using namespace Std;using namespace CV;String tbarname1 = "Block:";Defines two slider bars for adjusting parametersString tbarname2 = "W:";W is to keep part of the fogint block = 5;int w1 = 95;Double w = (double) w1/100;Mat src;Mat

The realization of strcpy

1 //2 //strcpy.c3 //Libin4 //5 //Created by Xu on 15/8/20.6 //Copyright (c) 2015 Xu. All rights reserved.7 //8 9#include Ten#include One#include string.h> A /*********************************************** does not consider covering *****************************************/ - Char* STRCPY1 (Char*DST,Const Char*SRC)//Const on the left side of the *, refers to the content pointed to by the pointer is a constant, not allowed to modify. - { theASSERT (

Syntax for filtering string expressions-[Winpcap User Guide]

possible direction is SRC , DST , SRC or DST . For example, 'src foo', 'dst net 128.3 ', 'src or DST port FTP-data '. If not specified, it is assumed that SRC or DST . If there is no link layer (for example, point-to-point protocols like slip), you can u

Implementation of base64 encoding and decoding (c)

Implementation of base64 encoding and decoding (c) Author: UnknownSource: Moonlight software Station Time added: 2005-2-28 moonlight software Station /*************************************** *************************This is a sample routine of base64 algorithm. The goal isRevoke strate principles, so some details may be ignored.Author Email: zhangwu2003@163.com**************************************** *************************/# Include # Include # Incl

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