android camera image recognition

on two points: 1. The size of the picture to scale to achieve the purpose of compression 2. The quality of the image compression Scale the size of the picture to achieve the purpose of compression In view of this situation and picture rotation problem, you can refer to my Android to deal with the camera rotation problem and bring the memory footprint thinkin

Recently in an Android image recognition app, you get image data through a camera preview or a photo shoot function, and then pass the image data to the local C + + image

IMAGE_FILE_NAME); 101 cropRawPhoto (Uri. fromFile (tempFile); 102} else {103 Toast. makeText (getApplication (), "No SDCard! ", Toast. LENGTH_LONG) 104. show (); 105} 106 107 break; 108 109 case CODE_RESULT_REQUEST: 110 if (intent! = Null) {111 setImageToHeadView (intent); 112} 113 114 break; 115} 116 117 super. onActivityResult (requestCode, resultCode, intent); 118} 119 120/** 121 * crop the original image 122 */123 public void cropRawPhoto (Uri ur

Problem descriptionVideo capture using V4L2, capturing video data with a resolution of (4:3) and previewing the image on an Android device using the Canvas,drawbitmap methodAndroid Device resolution is 540x960 (9:16), so the full screen preview when the image is stretched, how to solve this problem?No train of thought Ah, which great God Guide!!Here is the code o

Public void onprogresschanged(SeekBar arg0,intArg1,BooleanARG2) {Inputthreshold.settext (arg0.getprogress () +""); } });//Handling EditTextInputthreshold.setoneditoractionlistener (NewOneditoractionlistener () {@Override Public Boolean oneditoraction(TextView V,intActionId, KeyEvent event) {seekbar.setprogress (Integer.parseint (Inputthresho Ld.gettext (). toString ());return false; } });Well, here basically the main interface is taken into account, the fol

the same size (number of pixels) is the same on different resolution machines, and the displayed size is wrong.In addition, the following ways can help: 　　 Here's how:Java code1./**2. * Read pictures of local resources in the most memory-saving way3. * @param context4. * @param resId5. * @return6. */7. public static Bitmap Readbitmap (context context, int resId) {8. Bitmapfactory.options opt = new bitmapfactory.options ();9. opt.inpreferredconfig = Bitmap.Config.RGB_565;Ten. Opt.inpurgeable = t

changes, the Android automatic callback method, my operation in this method is to get to the gallery display image of the center point assigned to the member variable currentofgallery.The specific code is as follows:@Overrideprotected void onsizechanged (int w, int h, int oldw, int oldh) {currentofgallery = Getcurrentofgallery (); Super.on SizeChanged (W, H, OLDW, OLDH);}8) The complete code is as follows:

); Handler.sendemptymessage (0);} ; }. Start (); ShowDialog (); } First we convert the link address of the image to a picture: /** * Base address get network picture * @param surl Image Address * @return * @throws IOException */Public Static Bitmap Getbitmap (String surl) {try {URL url = new URL (surl); HttpURLConnection conn = (httpurl

Researchers have found another serious security vulnerability on Android: hiding Android malicious code in a picture (hide Android applications in Images).Google has released patches before the vulnerability is disclosed to outsiders. However, there are still a large number of Android phone users who do not choose to u

Use of metadata-extractor to read image EXIF metadata in Android I. Introduction Recently used in the development of metadata-extractor-xxx.jar and xmpcore-xxx.jar this thing, simply read a lot of articles to learn, to share and share. Work is often dealing with big pictures, and it is also more beneficial to explore and explore. First, we will introduce what is EXIF and EXIF is the abbreviation of Exchan

There are some problems with the image format of Windows and the image formats on Android mobile devices. In simple termsThe data from the camera is YUV, and the data displayed on the mobile device is RGBA, but the data processed in the C + + program is RGB. So you need to do the data conversion. The following are the

Reprint Please specify source:http://blog.csdn.net/allen315410/article/details/39932689Implementation of the 1.3D GalleryWe know that the Android system has provided us with a "container"--gallery to show the picture, but the effect of this Gallery display is flat and the dynamic effect is not strong. Here, we do a custom gallery component, to achieve the 3D effect of the picture display, think it should be good, first look:How to achieve this 3D effe

Set an avatar for Android, take a photo on your phone, or select an image from a local album as the Avatar.?? [Set an avatar for Android, take a photo on your mobile phone, or select an image as an Avatar from a local album] Social apps such as QQ and Weibo usually have the Avatar setting function. There are two ways t

In the previous article, the examples show how to call camera in Android and store images. In this article, we will learn how to retrieve and display images in the library. Note that if you have pushed several images to the sdcard when the simulator has been started, we recommend that you disable the simulator and restart it. Otherwise, the image you just added

If (requestcode = photohraph ){ // Set the file storage path, which is stored in the following directory. File picture = new file (environment. getexternalstoragedirectory () +"/Temp.jpg "); Startphotozoom (URI. fromfile (picture )); } If (Data = NULL) Return; // Read the scaled image of the album If (requestcode = photozoom ){ Startphotozoom (data. getdata ()); } // Processing result If (requestcode = photoresoult ){ Bundle extras

Android imitation circle of friends Image Viewer Before reading this blog post, I hope you can open your posts to the circle of friends and carefully check whether there is a "jiugongge" image area in the circle of friends, clicking an image will jump to the image details p

, 0, vertices. length/3); // Disable the client state before leavinggl. glDisableClientState (GL10.GL _ VERTEX_ARRAY); gl. glDisableClientState (GL10.GL _ TEXTURE_COORD_ARRAY );}} From GLBitmap, we can see that we first need to load an image resource and then generate texture. Here, we will particularly describe the changeGLViewport method. If this method is removed from MyRender, the running result is that GLSurfaceView draws an

This example describes the implementation of the Android cropping image. Share to everyone for your reference, specific as follows: Package Com.xiaoma.piccut.demo; Import Java.io.File; Import android.app.Activity; Import Android.app.AlertDialog; Import Android.content.DialogInterface; Import android.content.Intent; Import Android.graphics.Bitmap; Import android.graphics.drawable.BitmapDrawable; Import

There are a lot of nice examples in the Android API demos, and the code for these examples is pretty good, so if you're working through every single example in the API demos, congratulations on being a real Android player. It's also a way for some of the more confused Android developers to point out an ability to improve themselves. There are many examples in API

This article is an example of the Android programming implementation of the awesome image browser. Share to everyone for your reference, specific as follows: Anyone who has ever used Android's own gallery components knows that the effect of gallery is to drag and browse a group of pictures, which is obviously less than the iphone's Coverflow for dragging and browsing pictures. In fact, by extending gallery