exif

问题 I have been uploading images to FirebaseStorage, but often they are the wrong way around when displaying them. I have discovered the ExifInterface that can determined the orientation of the image and rotate and flip it if necessary. When selecting the image from the gallery area on my phone I get this error. I can select the image on my phone from the gallery and It can be displayed on the page. The differences between the URI address and the data is one / Data.getData() address : content:/

问题 I am working with jpeg files, when I look at the details of a jpeg file under windows (right-click->properties), under the Details tab there are entries for Title, Subject, Rating, Tags, Comments, etc. How can I set these properties in Xamarin (Android)? Thanks. 回答1: Here is some code to guide you. ExifInterface newExif= new ExifInterface(filePath); newExif.SetAttribute(ExifInterface.TagGpsLatitude, "teste lat"); newExif.SetAttribute(ExifInterface.TagGpsLatitudeRef, "teste lat ref"); newExif

问题 I am trying to use Python to resize picture. With my camera, files are all written is landscape way. The exif information handle a tag to ask the image viewer to rotate in a way or another. Since most of the browser doesn't understand this information, I want to rotate the image using this EXIF information and keeping every other EXIF information. Do you know how I can do that using Python ? Reading the EXIF.py source code, I found something like that : 0x0112: ('Orientation', {1: 'Horizontal

问题 I am trying to use Python to resize picture. With my camera, files are all written is landscape way. The exif information handle a tag to ask the image viewer to rotate in a way or another. Since most of the browser doesn't understand this information, I want to rotate the image using this EXIF information and keeping every other EXIF information. Do you know how I can do that using Python ? Reading the EXIF.py source code, I found something like that : 0x0112: ('Orientation', {1: 'Horizontal

问题 I am wondering if it is possible to add GPS information to a photograph when saving the item to the camera roll. The code I currently use to save the image is: UIImage *theImage = (UIImage *)[info objectForKey: UIImagePickerControllerOriginalImage]; UIImageWriteToSavedPhotosAlbum(theImage, self, @selector(image:didFinishSavingWithError:contextInfo:), nil); I am wondering how I can modify the image EXIF data to add the current location, and make it compatible with the 'Places' functionality on

问题 I'm trying to extract meta data from files read within a Grunt task. executing: node test.js on this file: var exif = require('exif2'); exif('fixtures/forest.png', function (err, o) { console.log(arguments); }); Produces the expected output However, executing the grunt process: grunt projectJSON module.exports = function (grunt) { var exif = require('exif2'); return grunt.registerMultiTask("projectJSON", "Creates project JSON file.", function () { exif('fixtures/forest.png', function (err, o)

问题 How do I add Tags to a jpeg picture on UWP (universal Windows Platform) / Windows Phone 10. WindowsBase and PresentationCore not available. 回答1: Here is an example about how to write the Artist exif tag to a jpeg image in Windows Runtime. You can find all of the EXIF tag ids in this web page: http://www.exiv2.org/tags.html var src = await KnownFolders .PicturesLibrary .GetFileAsync("210644575939381015.jpg"); using (var stream = await src.OpenAsync(FileAccessMode.ReadWrite)) { var decoder =

问题 I need to get exif information from selected asset and to display part of it on the screen. 回答1: [[asset defaultRepresentation] metadata]; returns a dictionary of dictionaries of metadata for the given asset representation. Check out this dictionary for the data you're interested in. I am not sure but I think the keys in that dictionary (and subdictionaries) are the same as the ones listed under CGImageProperties Reference. 回答2: This is a complete answer ... all in one spot NSDictionary *nsd

问题 I kinda ran into a problem, I'm working on a small image site for a photographer, the photographer uses photoshop to store information into the image. Information such as image data, location, descriptions, ... He's been doing this since CS3. When user uploads a picture to the site, he wants everything to go automatically, so I was trying to read out all the keywords, like this: $size = getimagesize($path, $info); if(isset($info['APP13'])) { $iptc = iptcparse($info['APP13']); if(isset($iptc[

问题 I want to take photo using MediaStore.ACTION_IMAGE_CAPTURE intent, and save with MediaStore.EXTRA_OUTPUT. My code is same as this link: http://developer.android.com/training/camera/photobasics.html However, saved photo has no exif. It has only size information. Here is my log: TAG_APERTURE: null TAG_DATETIME: null TAG_EXPOSURE_TIME: null TAG_FLASH: null TAG_FOCAL_LENGTH: null TAG_GPS_ALTITUDE: null TAG_GPS_ALTITUDE_REF: null TAG_GPS_DATESTAMP: null TAG_GPS_LATITUDE: null TAG_GPS_LATITUDE_REF: