Programming :: Efficient Way To Display JPEG Images In Browsers?
May 12, 2010What is the efficient way to display jpeg images in browsers using c programming. Any links or any sample code.
View 6 RepliesWhat is the efficient way to display jpeg images in browsers using c programming. Any links or any sample code.
View 6 RepliesI'm running Fedora 11 on a Dell and all of the PNG and JPEG images are distorted.
View 1 Replies View RelatedGimp gives me an error saying i haven't got the jpeg plugin but i save images all the time as jpg's so what is going on? I had a look in synaptic and i can't pin point which plugin i am supposed to get.
View 9 Replies View RelatedDoes linux support images in .jpeg format? What is the difference if I save my image in .jpeg or .JPEG or .jpg from a linux point of view? Is this case sensitive?
View 5 Replies View RelatedSomehow I got libjpeg out of my system, and can't get it back working. I have installed jpeg-8b package, applications installed by it work, but not "system-wide" support for jpeg. Eg. I can use "cjpeg", but Eye of Gnome (image viewer) gives me "Unrecognized image file format" error.
Could you please point me to some right solution? Where does Debian look for this library?
I am trying to make a script which will analyze jpeg images taken from a webcam. i can get a image easily enough but i can't figure out a way to get the images average brightness as a number.
View 1 Replies View RelatedSo I'm teaching myself some scripting to try and create a fairly simple photobooth type affair... I've got gphoto2 playing fairly nicely with my canon, and imagemagick taking that output and rearranging it to a vertical format...
EDIT:
*smacks forehead*
Fairly simple to do what I needed initially: Code: feh -FZ -D 1 --cycle-once $COUNTDOWN & sleep 2 &
feh -FZ -D 20 --cycle-once $SMILE This shows a countdown from 5 to 1 in images and $SMILE is big that says 'smile'
So my question is thus... (fairly basic but I can't get my head round the use of & and sleep in this context) what's the best way to call my gphoto instructions (or a script with them in) mid way through the above code?!
'feh code'
sleep 5
'gphoto code'
this kind of thing seems like the way, but the'sleep 5' and 'gphoto code' doesn't start until feh is finished in this case?
I have this function that is supposed to print draw the first image from a function then hide the rest of the images using 'display: none' however for some reason the boolean test does not seem to work on one of my servers however it works on another, is there some php.ini setting I am missing or can you see any issues with the following code:
[Code]....
I am starting a project of my own (and learning C++ at the same time. I got my program to successfully scan a custom netmask, but it is REALLY slow. I want my program to do something similar to nmap -sP xxx.xxx.xxx.xxx-xxx. How to speed it up? Such as pinging more than one IP at a time...
Code:
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <sstream>
using namespace std;
int ip42;
string ip1, ip2, ip3, ip4, ipaddr;
int main() {
cout << endl << "Enter part 1: ";
cin >> ip1;
cout << endl << "Enter part 2: ";
cin >> ip2;
cout << endl << "Enter part 3: ";
cin >> ip3;
cout << endl << "Enter part 4: ";
cin >> ip4;
while(ip42 < 255){
ipaddr = string("ping -c 1 ").append(ip1);
ipaddr = string(ipaddr).append(ip2);
ipaddr = string(ipaddr).append(ip3);
ipaddr = string(ipaddr).append(ip4);
system(ipaddr.c_str());
ip42 = atoi(ip4.c_str());
ip42 += 1;
stringstream output;
output << ip42;
output >> ip4; } }
I wrote this script to attach url's to specified 6 digit numbers in a configuration text file. My original goal was to be able to be able to pull the url's and the 6 digit numbers from .csv files. that would allow me to make the script more versatile, not only for this particular project, but also for other projects in regards to the configuration file. This script works, and has served it's purpose, but it is not very pretty, and it's probably not very efficient. What can I do to improve it and possibly make it more versatile. I've thought about functions and arrays, but my skill set is still pretty limited. I'm not looking for someone to write it for me, just to point me in the right direction.
[Code]...
I need to figure out how to arrange for the fastest-possible read-access of a large or huge memory-mapped file. I'm writing high-speed real-time object-chasing software for a NASA telescope (on earth). This software must detect images of fast moving objects (across arbitrary fields of fixed stars), estimate what direction and speed the object image is traveling (based on the length and direction of a streak on the detection image), then chase after the object while capturing new 4Kx4K pixel images every 2~5 seconds, quickly matching its speed and trajectory, then continue to track and capture images until the object vanishes (below horizon, into earth shadow, etc).
I have created two star "catalogs". Both contain the same 1+ billion stars (and other objects), but one is a "master catalog" that contains all known information about each object (128 bytes per object == 143GB) while the other is a "nightly build" that only contains the information necessary to perform the real-time process (32 bytes per object == 36GB) with object positions precisely updated for precession and proper-motion each night. Almost always the information in the "nightly build" catalog will be sufficient for the high-speed (real-time) processes.
[Code]...
I want to get files header as much as possible which are mostly used so how can i get jpeg file header using C ?
If any other headers of MS Office is possible for U.
I run X only under duress. For years I have used svgalib clients. I haven't gotten svgalib to work on my new machine (or X, either, a different matter). I have come tantalizingly close.Is there any other non-X image displayer?
View 5 Replies View RelatedI recently migrated to a newer server running centos5 and cpanel
I have imagemagick installed
I installed freetype as well
Most images display fine on web pages for accounts on the server, however, .gif images do not display.All I get is an image placeholder.
.png are fine
.jpg are fine
I have not tested all the possible varieties of images, but .gif I know is not displaying.I am sure its some kind of RPM I am missing or a configuration problem.
Firefox in my Fedora 14 cannot display the product images in the following web page
[URL]
I have tried Firefox 3.6 and Firefox 4. Both failed. Seems error in CSS causing image discarded.
Kconquer in Fedora 14 can display without problem.
I have tried Firefox 4 in Windows XP can display without problem.
uname of my system is 2.6.35.12-88.fc14.x86_64
I'm running TB 3.1.5. Images do not display in emails. There is no "Display Images" button. Where the images would be, I only get a broke image icon (the little torn page). I don't know if this is a Ubuntu specific issue, but I thought I'd post here because the community is so responsive. I have tried the solution at this site, but though the mail.default_html_action value is set to 3, I still have no luck. [URL]
View 6 Replies View RelatedI m mew at linux programing an working on a project that is sort of cctv cmra monitoring i m now facing problem with part of my program for displaying the received image in window and also updating it timely by closing and opening new window or refreshing the same one...........i have no idea where to start study ........system command "display" is not fulfilling the purpose... its not refreshing until window is closed manually, control to the program is not returning back without forcefully closing.
View 2 Replies View RelatedI'm using 10.10 dual booted with xp and I'm trying to get images that are part of a docx file to open with OO 3.2 in ubuntu
They view fine on xp using OO 3.2 but windows being windows, it won't talk to my printer so I can't print. When I load up ubuntu and OO, the images just aren't there. The rest of the document looks the same however. Am I missing a file in ubuntu or is there a workaround for this?
I have a Compaq Presario CQ60 laptop with an Nvidia 8200M graphics card. When I try to enable visual effects I am asked to install the Nvidia restricted driver. When I do this and reboot, I get 6 copies of the Ubuntu screen on my display. Does anyone know what is causing this? I'm not sure which version it installed, I assume either 173 or 185. I have downloaded version 190 from the Nvidia web site. Should I install that version? If so, it is a .run file, how do I install it?Also, how do I reinstall the old driver. I fixed the problem this time by reinstalling Ubuntu, but that will get old if I have to do it too often.
View 4 Replies View RelatedI have tried numerous versions of �Hello World½ examples over the web to display the text on a web page. All the examples work on my local machine in the application viewer, but they donït work when from a web browser. I have tried both Firefox and IE.Some of them include:[URL]
Code:
java.lang.reflect.InvocationTargetException
at com.sun.deploy.util.DeployAWTUtil.invokeAndWait(Unknown Source)
[code]...
I have two files. One huge one (200.000+ lines) called 'db' and one big one (15.000+ lines) called 'indices'.What is the quickest way of filtering out the lines in 'db' containing any index (anywhere on the line) from 'indices'.Is there a faster approach in bash, linux?
View 1 Replies View RelatedI am very new in linux/aix scripting. I request you all to give me efficient pdf book or documentation for learning scripting.
View 2 Replies View RelatedI am trying to setup the most efficient way to remotely administer an ubuntu system. So far I was successful in setting up ssh. I have the server running and made sure it only uses keys to authenticate and changed the default port. I can connect to the ssh-server. This system is behind nat and bots trying to break-in when I forwarded the port. I used the AllowUsers option, which helped in knocking back these rouge connections. I was not comfortable leaving a port open all the time, so I set up logmein Hamachi VPN and closed the ports that were open on NAT.
Now I use Hamachi and am very impressed. I use VNC in VPN. But Vino is slow, I tested x11vnc and it was slightly faster. I also tried to set up freenx but nxsetup file was missing. some one posted that file in the forums and suggested copying to the system but I was not sure if I want to download a script from the forum and use it. So for the time being, I thought I will just concentrate on X11vnc until freenx is fixed.
I would like to create a separate desktop on the server and use it to access remotely. This way we will not have to fight over the cursor (sounds funny but very frustrating). From what I understand x11vnc has this function inbuilt (uses vncserver). I cannot get it to work! when using ssh, at the remote machine's command prompt, if I type "evince xyz.pdf", it does not launch the "xyz.pdf". what am I doing wrong? When using VNC, how can I change between different users on the remote machines? Right now I can only use VNC in one account that I first setup. When I try to change to another user, vnc client goes blank. How can I get as much control of the remote system as possible? Right now I need someone to switch on the remote system and login to their account before I can VNC. Can I use ekiga inside VPN, I use skype right now and it's sometimes terrible with dropouts. I looked around and someone suggested using ekiga as it works very well over lan. How do set up ekiga so that I have a direct connection with the remote system? Is there any client that just takes the IP address and creates a connection? Mumble seems to be the popular choice, it's most suited to LANparties, I just need a connection between two systems. I am trying to set this up to help users with hardly any computer knowledge to use the system without any issues.
Check out the frontpage of mail.com - how do I do the scrolling images in Javascript, like it's doing?
View 4 Replies View RelatedI have an image (a photo) in a variable (obtained from a MySQL database), eg. $ary[4]. I wish to display it in my Perl CGI script. My question is, th normal image tag ie. <IMG> takes a SRC parameter of a *file*, whereas I just want to PRINT the image in the variable.
View 3 Replies View RelatedI'm writing a website with Perl/CGI. Why into my static html pages appear images and in my pages created by cgi script images don't appear?
View 1 Replies View RelatedWell, the title says it all. I have a form like this in my document:
<form enctype="multipart/form-data" name="profile" method="post" action="?">
<input type="hidden" name="MAX_FILE_SIZE" value="250000">
Select image:<input type="file" name="image" />
<br />
[code]...
I even printed the $_FILES array and it looks like this:
Array ( [image] => Array ( [name] => bojan.jpg [type] => image/jpeg [tmp_name] => /var/upload/phpjarPwZ [error] => 0 [size] => 10096 ) )
But the problem is that this file never gets saved to /var/upload directory (I changed php.ini file, so that uploaded files should be saved into /var/upload. I tried /var/tmp as well, but it's the same). Here are also the permissions of this dir:
drwxr-xr-x 2 apache apache 48 2010-02-17 00:30 upload
BTW, I use Mandriva 2010 64 bit distribution. I spent last two days searching for solution on internet forums, asking people and made absolutely no progress. is it possible to debug what is happening with the supposedly uploaded file? I mean any logs, where I could find trace, what's going wrong? I tried to check /var/log/httpd and files in there, but no success either...
I have inherited a wordpress theme with a folder of images that I think are no longer being used. I wanted to find the orphaned images using grep, so I wrote this script:
Code:
#!/bin/bash
echo $PWD
for i in *.*; do
cd ..
[Code].....
Its seems like I got some false positives out of it, but it worked pretty ok. I guess. :| Of course, it is not checking for images in the content of the database.
Orphan finding has to be a wheel that is already invented.
I am building a pipeline for image processing. I would like to be able to take the png images in a folder and pass them to clusterImage.pl once that is done I would like to then pass the outputted file to seperateObjects.pl the outputted file is of the same name but has kmeansOutput.all.matrix attached to the end. Below is what I have so far, but it is not working.
#!/bin/bash
#This script will take in an image and a matrix file.
#The output will be an image and a matrix file.
list=`ls *.png`
for i in $list
[Code].....
I was wondering if I can show an image on our php site if we store the path to it. For example if we get the result form my sql as:
images/example1.png and the handle the result as common html.
< img src="databaseresult" width="173" height="188" border="1" / >
is this possible? do you think theres a better way to do it?
we need to store the images locally we cant use a blob space on the table.