toDataURL("image/jpeg") production distorted images

Similar Questions

• . JPEG files distort playback sequence (pro CS4)

  So I create a video with kind of slide show mixed overall, however, when I do a photo file (.) JPEG) she is beautiful when the sequence is interrupted, but when he plays the picture is very distorted and pixelated. I have tried to cross 4:3 screen wide and the scale to adapt the framework and not. Tried every angle to hit the thing I can think of. Any suggestion would be appreciated.

  Set the playback Mode to the very high instead of auto.

• Resize the image with HTML5 Canvas - distortion

  Hi all

  I'm working on a Webworks app where I need to resize an image to upload it to a server. I use JQuery Mobile, the application should run on OS6 and upward. The user can use the camera or select a picture, the power off. The corresponding code is the following:

  function handleOpenedFile(fullPath, blobData) {
                  var image = new Image();
                  image.src=fullPath; //path to image
                  image.onload = function () {
                      var resized = resizeMe(image); // send it to canvas
                      //Do stuff with the DataURL returned from resizeMe()
                  };
          }
  
  function resizeMe(img) {
  
              var canvas = document.createElement('canvas');
              var width = Math.round(img.width / 2);
              var height = Math.round(img.height / 2);
              canvas.width = width;
              canvas.height = height;
              var ctx = canvas.getContext("2d");
              ctx.drawImage(img, 0, 0, width, height);
              return canvas.toDataURL("image/jpeg", 0.8);
          }
  

  I then use the Base64 in the DataURL for download on the server. The images are reduced, but they are truncated. Parts of the image are shifted autour and colors come out strange. It is not scaling in itself than the mess to the top of the picture it comes out garbled if you draw on the canvas without any scaling.

  Does anyone have an idea how to solve this problem or have another suggestion to resize an image for download?

  I managed to solve the problem of resizing for anyone who takes place also in this. Replacement of

  return canvas.toDataURL("image/jpeg", 0.8);
  

  with

  return canvas.toDataURL();
  

  solved the problem with the strange visual artifacts. Returns a picture of resized without any strangeness.

• Get the string invalid Base64 of image of toDataURL() for the first time in 10 of blackberry webworks

  Hello

  I need to get the Contact image converted to string Base64 using BB 10 Webworks (blackberry.pim.contacts) I get only the contact.photos [0] .smallFilePath which returns the path to the phonebook file.

  Now, I want to get the image of this path and convert it to a Base64 string.

  Here's the javascript code :

  var img = document.createElement ('Image');
  var canvas = document.createElement ('Canvas');

  function getBase64Image (p) {}
  img.setAttribute ("src", p);

  Img.width = Canvas.Width;

  Canvas.height = img.height;

  CTX var = canvas.getContext ("2d");
  ctx.drawImage (img, 0, 0);
  Return canvas.toDataURL("image/jpg");

  }

  This means bad Base64 string of image for the first time. When I convert this string to the image it displays white screen. But returns a string in the Mithraeum and after conversion, display a correct image.

  I use Blackberry Z10 (OS 10) for the test.

  I think that the canvas is not drawing image properly for the first time.

  I have searched and tried many things, but not got success. What will be the solution.

  Thanks in advance.

  My guess is that the image did not load the source completely still. Setting the src / image loading is an asynchronous event, which means that your code will continue to the next line regardless of whether the image has loaded yet or not.

  After calling setAttribute instead of execute the code of the Web, you will probably need define an event on img for the load event listener. Once the image is loaded, you can then use the img with canvas variable to retrieve its data.

  Note that getBase64 will return immediately, so you may need to develop some sort of mechanism to wait before returning, or the asynchronous approach and integrate reminders for the success trigger the next piece of code.

• Who has the highest image quality?

  I'm working on a huge project, analysis of the thousands of books, documents and files that I have collected over the years in the form of PDF files. I use a scanner high speed when possible, using a dish only for items that cannot be digitized with a scanner high speed (large size files and folders in several pages for example). My plan is to digitize everything as quickly as possible, so I can have a digital copy safely stored in my computer and some external hard drives. This is probably what I need to do for only text files, which I can throw then (the copy of the paper, that is).

  However, I want to make a new image analysis (and perhaps some elements of text) at a higher resolution on my scanner so I can have copies of higher quality. Then I'll try to figure out the best resolution and what file type to save as. I use a scanner Epson Perfection V33. Am I right in thinking that quality would be offered by a .tiff file, followed by a .jpg with a .pdf file file lower quality?

  The quality of most of my material is not extraordinary, and I probably won't be much as TIFF, scanner due to the huge file size. So I think that the best option for images (and the text that I might want to scan as an image) is jpg. Is there any particular optimal resolutions that you would recommend?

  Thank you.

  "Image quality" in a document PDF is created by the image quality of the image that is presented in the PDF document.

  A PDF file can and often there are a lot of images with each having a different image resolution.

  If you have content text on paper and that you want to scan it, go to TIFF and then create a PDF of TIFF.

  This optimises the accuracy of OCR recognition.

  JPEG production involves typically "ugly" compression (compression by destructive removal of content) - not too goof to images of text that you want to pass by OCR.

  Analysis of the text to TIFF - 300 dpi will suffice in most situations. Avoid JPEG compression.

  Be well...

• Save the Photo on the Gallery

  HelloW forum.

  I have a problem with an application that was rejected during the in-depth review process.

  There is a function in which you can develop a character + a photo and save the photo on the gallery. Everythings works fine, but when you try to retrieve the image of the gallery you get an error.

  How can it help me understand why the images cannot be open later?

  Thank you.

  /*functions for saving the image*/function savePhoto(){  var canvas = document.getElementById("fotoTomadaPizarra"); /*the canvas*/  var dataURL = canvas.toDataURL('image/jpeg');    try{      dataURL = dataURL.replace('data:image/jpeg;base64,', '');      saveFile(dataURL, '/accounts/1000/shared/camera/cc'+Date.now()+'.jpg');   }catch(e){   alert(e);}}
  
  function saveFile(savedata, openat, picker, ext) {    blackberry.io.sandbox = false;    if (ext == null) ext = '';    if (picker != 'picker') {        window.webkitRequestFileSystem(window.TEMPORARY, 5 * 1024 * 1024, function (fileSystem) {          fileSystem.root.getFile(openat, {create : true}, function (fileEntry) {             fileEntry.createWriter(function (fileWriter) {                 fileWriter.onwriteend = function () {blackberry.ui.toast.show('Guardado!');};                 fileWriter.onerror = function (fileError) {blackberry.ui.toast.show(fileError);};
  
                try{                   var blob = new Blob([savedata], {type : 'image/jpeg'});                   fileWriter.write(blob);               }catch(e){alert(e)}              $.mobile.loading('hide');              document.getElementById("loadingDiv").style.display = "none";});},errorHandler);});}else {blackberry.invoke.card.invokeFilePicker({mode: blackberry.invoke.card.FILEPICKER_MODE_SAVER,directory: [openat],viewMode: blackberry.invoke.card.FILEPICKER_VIEWER_MODE_GRID,sortBy: blackberry.invoke.card.FILEPICKER_SORT_BY_NAME,sortOrder: blackberry.invoke.card.FILEPICKER_SORT_ORDER_ASCENDING}, function (path) {window.webkitRequestFileSystem(window.TEMPORARY, 5 * 1024 * 1024, function (fileSystem) {fileSystem.root.getFile(path+'.jpg', {create : true}, function (fileEntry) {fileEntry.createWriter(function (fileWriter) {var blob = new Blob([savedata], {type : 'image/jpeg'});fileWriter.write(blob);fileWriter.onwriteend = function () {blackberry.ui.toast.show('Guardado!');};fileWriter.onerror = function (fileError) {blackberry.ui.toast.show(fileError);};$.mobile.loading('hide');document.getElementById("loadingDiv").style.display = "none";});});});});}}
  

  I got it.

  I don't know exactly where the problem was. but this has been solved by using another library.

  https://github.com/blueimp/JavaScript-canvas-to-BLOB/BLOB/master/js/canvas-to-BLOB.js

  Thank you for your help and your time.

• are there products that allow me to convert a "jpeg: (photoshop, image) or to a file"dst '?"

  are there products that allow me to convert a "jpeg: (photoshop, image) or to a file"dst '?"

  @ !

  Embroidery machine > how to convert a jpg file in dst?

  "Download free SewArt

• Distort a Jpeg image with a clipping path

  Let me first say that I like to use clipping path jpegs in Photoshop. They can be used in InDesign course, batch and convert other formats that need transparency and so on... One irritant is that there is no easy way to distort or adapts the clipping and the overall image once the file has been created, or at least not that I know.

  For example, I'm working on a piece of furniture that already contains a clipping path, but the client wants the rectified image (or the prospect of the device removed, which I don't actually like). So, is there a more easy/fast way to do this instead of having to first distort the image, then try manually align the track of clipping or worse, make clipping path?

  Any help would be greatly appreciated, thanks

  Distort the image in transformation mode (Cmd + T) can target only the path and use ADSI > transform path > Again (Shift + Cmd + T) instantly warp the path in the same way.

• Distort a jpeg image

  Hello, I'm trying to distort a jpeg image. The tilt option is simply not enough good for what I want to do. Is it possible to do this? Any guidance would be greatly appreciated...
  
  See you soon,.
  
  P

  I think that I thought about it!

  Change - Bitmap - Trace, with a threshold of about 5 (in my case).
  This turns my image into a vector image.

  I then combine the vector image and voila! I can use the envelope distort on it!

  Perfect for the animation frame by frame (so far)

  Weird, I tried to find a solution for this for a long time (weeks)... it just occurred to me that you can vectorize a bitmap image.

  I'm trying to get a type of card-flip of animation, and I see that Chris Georgenes has part of a chapter in his new book on this (I threw an inside look on Amazon and the book sounds great). All the tips - that someone could give me on this type of animation would be great!

  See you soon

• Images in Photoshop CC 2015 is distorted when opening

  So I recently renewed my subscription Photoshop CC 2015 I received more design oriented responsibilities in my job. The task I have to do is to design a banner I did research on and managed to wrap your head around the problem to roll up.

  The question I have now is that whenever I try to add an image (jpeg, pdf, etc.). The image is horribly distorted to the point that it is not usable. In addition, he shifts the rest of the layout and affect the coloring of text and other forms that I inserted.

  I am sure that my laptop meets the system requirements and none of the files are corrupt or whatever it is.

  Can anyone offer a suggestion as to what the migration question be? So far, I still try to reinstall the program from scratch, that's my next step, but I don't think it will solve.

  Thanks in advance!

  You push your CPU to its limits with 3 GB of Ram running image editing products. As you can see the document that you opened is 860 + Mb and your Ram is about 3000 MB.

  Photoshop system requirements , it is recommended to have 8 GB of Ram for optimal performance. But that seems not to be the origin of the problem here, just a recommendation.

  Have you changed the CMYK color space voluntarily? Try to change it to RGB and see if that helps.

  ~ Assani

• Why some JPEG images do not work?

  Help, please. A few JPEG images on my computer will not be displayed at all. On the preview, it only display the generic JPEG image icon. No photo. & When I try to upload them to facebook, I get an error message. How can I fix this without having to do a system restore or something? I am running Windows 7.

  Help, please. A few JPEG images on my computer will not be displayed at all. On the preview, it only display the generic JPEG image icon. No photo. & When I try to upload them to facebook, I get an error message. How can I fix this without having to do a system restore or something? I am running Windows 7.

  =========================================
  It seems that some of these pictures may be corrupted. And,
  If this is the case, the system restore fix it anyway.

  The photos in question can be opened in a different viewer?
  For example... Paint? Windows Photo Gallery? Windows
  Photo Viewer?

  Windows 7 - getting started with paint - tutorial
  http://Windows.Microsoft.com/en-us/Windows7/getting-started-with-paint

  Windows 7 - photo gallery
  http://Windows.Microsoft.com/en-us/Windows7/products/features/photo-gallery

  Windows 7 - view and use your pictures in Windows Photo Viewer
  http://Windows.Microsoft.com/en-us/Windows7/view-and-use-your-pictures-in-Windows-Photo-Viewer

• Export jpeg image and the source (raw) in the same folder of target

  Hi all

  Newbie question, I just discovered LightRoom and want to do following the thing:

  When I export my original raw images to JPEGs in a folder target, I want to copy the original image too in the same target folder.

  Is this a way to make than hollow settings in LR?

  Thanks in advance for your answer

  Lanz

  I think you'd have to do this through two products.

  Export the RAW with the Original file Type

  Export the same photo with the JPG file Type.

• Cannot save PDF as an image (JPEG, PNG, etc.). "Error trying to write to the file. This may be due to insufficient disk space.

  System specs

  OS X El Capitan

  Version 10.11.1

  MacBook Pro (retina, 15 inches, beginning 2013)

  Intel Core i7 2.8 GHz

  16 GB 1600 MHz DDR3

  Macintosh HD

  Intel HD Graphics 4000 1536 MB

  Adobe Acrobat XI

  Architecture: i386

  Build: 11.0.13.17

  AGA: 4.28.145

  CoolType: 5.11.141

  JP2K: 2.0.0.32097

  When you try to save any PDF to an image format, the message "error trying to write to the file. This may be due to insufficient disk space"appears.

  

  However, there is more than enough disk space for the image file.

  

  I noticed some error reports similar to mine with more and more often on this forum. Each of them must still be addressed.

  Problem exporting PDF to image files

  Can't export to JPEG - disc can be locked or full

  Problem exporting PDF to image files

  Acrobat X Pro error when save as JPEG: not enough disk space to perform operations

  Acrobat will be PDF is more secret in PNG format

  Problem with saving a PDF to JPEG file

  Error trying to write to the file. This may be due to not enough space (Page 1)

  This seems to be a problem independent of the operating system or version of the product. What happens and when can we expect a patch? The fact that Adobe is unable to save a PDF file to other file formats has been a permanent frustration of my colleagues and myself for some time. I would be very grateful to know a method to fix the error so that we no longer have to rely on third party software to do the job that your product is supposed to do.

  Also, if anyone out there is in the same boat, I encourage you to take the floor. I also encourage other people to try to save the PDF files as images and report if you encounter the same problem.

  Hi Geoffrey,.

  Thank you for pointing out this problem. Let me check a few details about this problem with Acrobat.

  In the meantime, please try this:

  Open a PDF in Acrobat

  Go to file > export to > Image > JPEG

  Save as dialog click on the settings button in the lower part

  In the color management pane

  Click on the drop down to RGB

  Select Off & Ok

  Save the file in JPEG format

  I would like to know if it works.

  Thank you

  Abhishek

• screen shot image blurred/distorted when inserted in captivate 7

  I'm trying to insert a screenshot image into a page of quiz of hotspot on my site my users access - when inserted or pasted, the text in the image distorts so that you can't read.  I tried many things to fix it and nothing works.  I tried to save as a .gif, .png, .png24 .jpeg, tried to change the resolution.  I've never had this problem before.

  Any ideas would be great.

  Thank you!

  What is the zoom for Captivate setting? Maybe it's something other than 100%?

• Transform a JPEG image in transparent layer DNG format

  Hello

  Comment then I transformer one as a JPEG in a different image format, like DNG transparent background.

  The but to put this image into a layer overlay or superposition or product into another image to make the compositing?

  (the result being like files that one can download Carriage..., in order to make them myself)

  Thank you for your help

  Well cordially

  Christiane DELBECQUE

  RAW formats do not support transparency THAT DNG is the right choice to start. That and, of course, your choice of format should / will depend on how people are able to open your file, which means that it will take TIFF, PSD or PNG. You can create transparency in a variety of ways using playlists and so forth, but really, it is something that you can just read the help or watch a tutorial on the Internet. The rest is irrelevant - even if you provide the file with transparency, it does not automatically mean that people will not need additional measures to actually use the transparency information.

  Mylenium