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  • How to Quickly Resize, Convert & Modify Images from the Linux Terminal

    - by Chris Hoffman
    ImageMagick is a suite of command-line utilities for modifying and working with images. ImageMagick can quickly perform operations on an image from a terminal, perform batch processing of many images, or be integrated into a bash script. ImageMagick can perform a wide variety of operations. This guide will introduce you to ImageMagick’s syntax and basic operations and show you how to combine operations and perform batch processing of many images. The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos

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  • Sending URL as a parameter using javascript

    - by Prashant Singh
    I have to send a name and a link from client side to the server. I thought of using AJAX called by Javascript to do this. This is what I mean. I wished to make an ajax request to a file called abc.php with parameters :- 1. http://thumbs2.ebaystatic.com/m/m7dFgOtLUUUSpktHRspjhXw/140.jpg 2. Apple iPod touch, 3rd generation, 32GB To begin with, I encoded the URL and tried to send it. But the server says status Forbidden Any solution to this ? UPDATE :: It end up calling to http://abc.com/addToWishlist.php?rand=506075547542422&image=http://thumbs1.ebaystatic.com/m/mO64jQrMqam2jde9aKiXC9A/140.jpg&prod=Flat%20USB%20Data%20Sync%20Charging%20Charger%20Cable%20Apple%20iPhone%204G%204S%20iPod%20Touch%20Nano Javascript Code :: function addToWishlist(num) { var myurl = "addToWishlist.php"; var myurl1 = myurl; myRand = parseInt(Math.random()*999999999999999); var rand = "?rand="+myRand ; var modurl = myurl1+ rand + "&image=" + encodeURI(storeArray[num][1]) + "&prod=" + encodeURI(storeArray[num][0]); httpq2.open("GET", modurl, true); httpq2.onreadystatechange = useHttpResponseq2; httpq2.send(null); } function useHttpResponseq2() { if (httpq2.readyState == 4) { if(httpq2.status == 200) { var mytext = httpq2.responseText; document.getElementById('wish' + num).innerHTML = "Added to your wishlist."; } } } Server Code <?php include('/home/ankit/public_html/connect_db.php'); $image = $_GET['image']; $prod = $_GET['prod']; $id = $_GET['id']; echo $prod; echo $image; ?> As I mentioned, its pretty basics More Updates : On trying to send a POST request via AJAX to the server, it says :- Refused to set unsafe header "Content-length" Refused to set unsafe header "Connection"

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  • Best way to store and deliver files on a CMS

    - by Tio
    Hi all.. First of all, this isn't another question about storing images on DB vs file system. I'm already storing the images on the file system. I'm just struggling to find a better way to show them to all my users. I' currently using this system. I generate a random filename using md5(uniqueid()), the problem that I'm facing, is that the image is then presented with a link like this: <img src="/_Media/0027a0af636c57b75472b224d432c09c.jpg" /> As you can see this isn't the prettiest way to show a image ( or a file ), and the name doesn't say anything about the image. I've been working with a CMS system at work, that stores all uploaded files on a single table, to access that image it uses something like this: <img src="../getattachment/94173104-e03c-499b-b41c-b25ae05a8ee1/Menu-1/Escritorios.aspx?width=175&height=175" /> As you can see the path to the image, now has a meaning compared to the other one, the problem is that this put's a big strain in the DB, for example, in the last site I made, I have an area that has around 60 images, to show the 60 images, I would have to do at least 60 individual query's to the database, besides the other query's to retrieve the various content on the page. I think you understand my dilemma, has anyone gone trough this problem, that can give me some pointers on how to solve this? Thanks..

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  • lock file so that it cannot be deleted

    - by JoeCool
    I'm working with two independent c/c++ applications on Windows where one of them constantly updates an image on disk (from a webcam) and the other reads that image for processing. This works fine and dandy 99.99% of the time, but every once in a while the reader app is in the middle of reading the image when the writer deletes it to refresh it with a new one. The obvious solution to me seems to be to have the reader put some sort of a lock on the file so that the writer can see that it can't delete it and thus spin-lock on it until it can delete and update. Is there anyway to do this? Or is there another simple design pattern I can use to get the same sort of constant image refreshing between two programs? Thanks, -Robert

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  • Can't Display Bitmap of Higher Resolution than CDC area

    - by T. Jones
    Hi there dear gurus and expert coders. i am not gonna start with im a newbie and don't know much about image programming but unfortunately those are the facts :( I am trying to display an image from a bitmap pointer *ImageData which is of resolution 1392x1032. I am trying to draw that at an area of resolution or size 627x474. However, repeated trying doesnt seem to work. It works when I change the bitmap image I created from *ImageData width and height to resolution or size of around 627x474 I really do not know how to solve this after trying all possible solutions from various forums and google. pDC is a CDC* and memDC is a CDC initialized in an earlier method Anything uninitialized here was initialized in other methods. Here is my code dear humble gurus. Do provide me with guidance Yoda and Obi-Wan provided to Luke Skywalker. void DemoControl::ShowImage( void *ImageData ) { int Width; //Width of Image From Camera int Height; //Height of Image From Camera int m_DisplayWidth = 627 ;//width of rectangle area to display int m_DisplayHeight = 474;//height of rectangle area to display GetImageSize( &Width, &Height ) ; //this will return Width = 1392, Height 1032 CBitmap bitmap; bitmap.CreateBitmap(Width,Height,32,1,ImageData); CBitmap* pOldBitmap = memDC.SelectObject((CBitmap*)&bitmap); pDC->BitBlt(22, 24, 627, 474, &memDC, 0, 0, SRCCOPY); memDC.SelectObject((CBitmap*)pOldBitmap); ReleaseDC(pDC); }

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  • CSS column height different on Opera/IE to FF

    - by Infiniti Fizz
    Hi all, Thanks to everyone who helped with my last question but I've got a new browser-independent problem: For some reason, the image navigator (not yet functioning) on a website I'm working on is currently not displaying in the correct place on Firefox. It appears in the right place in IE8 and Opera but Firefox seems to have a problem with it. As can be seen in the below image, the imageContainer div (the image and the left/right arrows) appears on top of the footer, this is how it should look i.e. how it looks in IE8 and Opera. But in the image below, the imageContainer div is cutting into the footer div for some reason, and I don't know why. imageContainer has a margin-top: 110px; to get it in the right place at the bottom of its column. There are 2 columns, the left housing the paragraphs and imageContainer and the right housing the Calendar and contact details. The footer div also has clear: both; Also, it's not just the image that is falling into the footer, it's the arrows as well only they are the same colour as the footer so this isn't immediately apparent. Any ideas why it isn't displaying correctly? Is there a better way of aligning the imageContainer to the bottom of it's column (to keep the box shape of the website) other than using the margin-top to position it? Thanks in advance, infinitifizz

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  • referencing ints from other classes

    - by user357032
    if i wanted to reference an int from another class how would i go about doing that??? public class Zoom extends View { private Drawable image; public int zoomControler=20; public Zoom(Context context) { super(context); image=context.getResources().getDrawable(R.drawable.icon); setFocusable(true); } @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub super.onDraw(canvas); image.setBounds((getWidth()/2)-zoomControler, (getHeight()/2)-zoomControler, (getWidth()/2)+zoomControler, (getHeight()/2)+zoomControler); image.draw(canvas); } } class HelloOnTouchListener implements OnTouchListener{ @Override public boolean onTouch(View arg0, MotionEvent arg1) { return true; } } in this case i want to reference the zoomControler from the first class in the second helloontouchlistener class

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  • Is it bad practice to output from within a function?

    - by Nick
    For example, should I be doing something like: <?php function output_message($message,$type='success') { ?> <p class="<?php echo $type; ?>"><?php echo $message; ?></p> <?php } output_message('There were some errors processing your request','error'); ?> or <?php function output_message($message,$type='success') { ob_start(); ?> <p class="<?php echo $type; ?>"><?php echo $message; ?></p> <?php return ob_get_clean(); } echo output_message('There were some errors processing your request','error'); ?> I understand they both achieve the same end result, but are there benefits doing one way over the other? Or does it not even matter?

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  • Didn't load images when I test version on Iphone

    - by Igor
    I use images from resources like that: UIImage *image = [ UIImage imageNamed:@"example.jpg" ]; UIImageView *imageView = [ [UIImageView alloc] initWithImage:image ]; When I test it on semulator it's works. But on Iphone no. Also image with size about 10Kb loaded, with size about 100Kb no. Whats wrong?

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  • How to increse performance of raster scrolling on Mac ?

    - by Max
    I have a game with a big raster map Now we are using jpeg (4900x4200) And durring the game we need to scroll through this map. We use the following: Class Map extends mx.containers.Canvas and mx.controls.Image on it In constructor we have: public function Map() { super(); image.source = ResourceManager.interactiveManager.map;//big image addChild(image); ...... } for scrolling we are use: if(parentAsCanvas==null){ parentAsCanvas = (parent as Canvas); } parentAsCanvas.verticalScrollPosition = newX; parentAsCanvas.horizontalScrollPosition = newY; In windows, we have very good performance. In Linux and Mac in flashplayer we have a good performance too. But in browsers performance is quite slow! What can we do to resolve it?

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  • Iphone sdk - please help , 1 view takes me 45 minutes to do :(

    - by Dave
    Hey, I've been working on a Cook Book App but each view ( or recipie page) takes about 45 minutes to complete so as you can imagine its taking forever. The problem is that I have to manually: Set up a gradient image for the back ground (Somtimes I have to add a few image backgrounds to fit the view as I often use a scroll view, not sure how this could be automated?) Put an image behind the titles "Recipe name" , "Time needed" and an image to go behind the recipie instructions ( again I might need a few of these depending on how long the description is. Creating view controllers for main sections such as "Breakfast" and "Lunch" and then I need to manually create view controllers to go in these sections. Theres got to be a way to set up a template for this? Thanks for reading all of this.

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  • How CudaMalloc work?

    - by kitw
    I am trying to modify the imageDenosing class in CUDA SDK, I need to repeat the filter many time incase to capture the time. But my code doesn't work properly. //start __global__ void F1D(TColor *image,int imageW,int imageH, TColor *buffer) { const int ix = blockDim.x * blockIdx.x + threadIdx.x; const int iy = blockDim.y * blockIdx.y + threadIdx.y; if(iy != 0 && iy < imageH-1 && ix < imageW) { float4 fresult = get_color(image[imageW * iy + ix]); float4 fresult4 = get_color(image[imageW * (iy+1) + ix]); float4 fresult5 = get_color(image[imageW * (iy-1) + ix]); float4 fresult7; fresult7.x = fresult.x*0.5+fresult4.x*.25+fresult5.x*.25; fresult7.y = fresult.y*0.5+fresult4.y*.25+fresult5.y*.25; fresult7.z = fresult.z*0.5+fresult4.z*.25+fresult5.z*.25; buffer[imageW * iy + ix] = make_color(fresult7.x,fresult7.y,fresult7.z,0); } image[imageW * iy + ix] = buffer[imageW * iy + ix]; //should be use cudaMemcpy, But it fails } //extern extern "C" void cuda_F1D(TColor *dst, int imageW, int imageH) { dim3 threads(BLOCKDIM_X, BLOCKDIM_Y); dim3 grid(iDivUp(imageW, BLOCKDIM_X), iDivUp(imageH, BLOCKDIM_Y)); Copy<<<grid, threads>>>(dst, imageW, imageH); size_t size = imageW*imageH*sizeof(TColor); TColor *host =(TColor*) malloc(size); TColor *dst2; //TColor *dst3; //TColor *d = new TColor(imageW*imageH*sizeof(TColor)); dim3 threads2(imageW,1); dim3 grid2(iDivUp(imageW, imageW), iDivUp(imageH, 1)); *for(int i = 0;i<1;i++) { cudaMalloc( (void **)&dst2, size); cudaMemcpy(dst2, dst, imageW*imageH*sizeof(TColor),cudaMemcpyHostToDevice); //cudaMalloc( (void **)&dst3, imageW*imageH*sizeof(TColor)); //cudaMemcpy(dst3, dst, imageW*imageH*sizeof(TColor),cudaMemcpyHostToDevice); F1D<<<grid2, threads2>>>(dst, imageW, imageH,dst2); //cudaMemcpy(dst, dst3, imageW*imageH*sizeof(TColor),cudaMemcpyDeviceToHost); cudaFree(dst2); }* } This code works, but cant synchronise the array of image. and lead to many synchronise problem

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  • How to enable camera feature in a sencha touch application using phonegap?

    - by Fabre
    I have developed one application in sencha touch2. I want to design a page in such a way that The page has a default image and one button below that. By clicking that button device camera should open(device mainly iPad and iPhone) and after capturing the image lets see it stored in a folder named as "capture" in your device. Then that captured image should replace that default image. I want to use Phonegap compulsorily. I have seen phone gap APIs for camera but I don't get it how to use it exactly. I am using MAC and Xcode for development.

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  • Transferring local site to shared hosting

    - by Pete
    I'm looking to setup a simple online text processing tool similar to the Clang demo. The processing program itself is a C++ program which I can modify to provide the desired output I need. Since I use Linux+Perl daily and have used Apache in the past, I'd like to get this working locally first. My two questions are: Is it possible to do this with only Apache and Perl? I've looked into frameworks for doing this and quickly ran into The Paradox Of Choice. Will I be able to easily transfer a working local site to a shared hosting service? I want to administer as little as possible. My understanding is since this needs to run a C++ program that CGI is a requirement and thus I need to administer the httpd server. Hopefully this doesn't mean a VPS. Thanks

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  • Adding a Shadow to a NSImageView

    - by Kevin Sylvestre
    Sorry for the seemingly simple question. I have a NSImageView (added in interface builder) and want to add a shadow outline. I tried using the 'Image View Effects' section of the 'Inspector' but this required enabling a core animation layer. If I set it for the 'Content View' I have very strange appearance side effects. If I set it for the 'Image View' the shadow is cropped (sorry, can't resize the image view). Any ideas?

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  • Android - Transforming widgets within transformed widgets and the resulting usability issues.

    - by Ben Rose
    Hello. I'm new to Android application development and I'm currently experimenting with various UI ideas. In the image below, you can see a vertically scrolling list of horizontally scrolling galleries (and also textviews as you can see). I'm also doing some matrix and camera transformations which I will come to in a minute. For the background of the list elements, I use green. Blue is the background of the galleries, and red is the background for the images. These are just for my benefit of learning. The galleries being used are extended classes where I overrode the drawChild method to perform a canvas scale operation in order for the image closest to the center (width) to be larger than the others. The list view going vertically, I overrode the drawChild method and used the camera rotations from lack of depth dimension in the canvas functionality. The items in the list are scaled down and rotated relative to their position's proximity to the center (height). I understood that scrolling and clicking would not necessarily follow along with the image transforms, but it appears as though the parent Gallery class's drawing is constrained to the original coordinates as well (see photo below). I would love to hear any insight any of you have regarding how I can change the coordinates of the galleries in what is rendered via gallery scroll and the touch responsiveness of said gallery. Images in the gallery are not same dimensions, so don't let that throw you in looking at the image below Thanks in advance! Ben link to image (could not embed) -- Update: I was using my test application UI and noticed that when I got the UI to the point of the linked image and then I touched the top portion of the next row in the list, the gallery updated to display the proper representation. So, I added a call to clearFocus() in the drawChild method and that resulted in more accurate drawing. It does seem a tad slower, and since I'm on the Incredible, I'm worried it is a bloated solution. In any event, I would still appreciate any thoughts you have regarding the best way to have the views display properly and how to translate the touch events in the gallery's new displayed area to its touchable coordinates so that scrolling on the actual images works when the gallery has moved. Thanks!

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  • How to do pragmatic high-level/meta-programming?

    - by Lenny222
    Imagine you have implemented the creation of a nice path-based star shape in Lisp. Then you discover Processing and you re-implement the whole code, because Processing/Java/Java2D is different. Then you want to tinker with libcinder, so you port your code to C++/Cairo. You are (re)writing a lot of boiler plate code, while the actual requirement "create a star shape" (or "create a path, moveto x y, lineto x y") has not changed. What are the options to encapsulate those implementation details? Some sort of pragmatic meta-programming? Maybe an expert system? How would you define your core business logic as language-independent as possible?

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  • Help filtering childs

    - by lidermin
    Hello, I have this jquery code: $(".button-banc").hover(function() { $(".button-banc img") .animate({ top: "-21px" }, 200).animate({ top: "-17px" }, 200) // first jump .animate({ top: "-19px" }, 100).animate({ top: "-17px" }, 100) // second jump .animate({ top: "-18px" }, 100).animate({ top: "-17px" }, 100); // the last jump }); The effect I want is: when you pass the mouse over an image this image should jump a bit. The problem is that I got "some" images with the class "button-banc" and I want this behaive: When you pass the mouse over, "only the actual image" should jump. The problem is that with the code I posted, every image jumps. How can I achieve this, please help; I want to make a generic way, so that if I add images with the class, they also behaive like that. Thanks.

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  • curl not returning content length header

    - by Michael P. Shipley
    Trying to get image file size using curl but content length header is not returned: $url ="http://www.collegefashion.net/wp-content/plugins/feed-comments-number/image.php?1263"; $fp = curl_init(); curl_setopt($fp, CURLOPT_NOBODY, true); curl_setopt($fp, CURLOPT_RETURNTRANSFER, 1); curl_setopt($fp, CURLOPT_FAILONERROR,1); curl_setopt($fp, CURLOPT_REFERER,''); curl_setopt($fp, CURLOPT_URL, $url); curl_setopt($fp, CURLOPT_HEADER,1); curl_setopt($fp, CURLOPT_USERAGENT,'Mozilla/5.0'); $body = curl_exec($fp); var_dump($body): HTTP/1.1 200 OK Date: Sun, 02 May 2010 02:50:20 GMT Server: Apache/2.0.63 (CentOS) X-Powered-By: W3 Total Cache/0.8.5.2 X-Pingback: http://www.collegefashion.net/xmlrpc.php Cache-Control: no-cache, must-revalidate Expires: Sat, 26 Jul 1997 05:00:00 GMT Content-Type: image/png It works via ssh though: curl -i http://www.collegefashion.net/wp-content/plugins/feed-comments-number/image.php?1263 HTTP/1.1 200 OK Date: Sun, 02 May 2010 03:38:43 GMT Server: Apache/2.0.63 (CentOS) X-Powered-By: W3 Total Cache/0.8.5.2 X-Pingback: http://www.collegefashion.net/xmlrpc.php Cache-Control: no-cache, must-revalidate Expires: Sat, 26 Jul 1997 05:00:00 GMT Content-Length: 347 Content-Type: image/png

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