At present, mobile license plate recognition in China's police service, parking lot handheld charging machine, such as mobile terminals of the use of more popular, if in these terminals can integrate license plate recognition function, for the maintenance of traffic safety and urban security, the realization of traffic automation management has a realistic significance. Most of the terminal's operating syst
the DSP or encoding library and converted to a specific image file format for storage.
The optical lens of a digital camera is the same as that of a traditional camera. It aggregates an image to a photosensitive device, that is, an optical charge coupler (CCD ). CCD replaces the position of the photosensitive film in
The University has only three months left, as if it has experienced another reincarnation-beginning to miss the university life. Therefore, I chose to stay in the school and complete the three months of university indulgence. After graduation, you can at least recall the last days of college.
Biji followed the previous lab teacher's main content: Image Recognition of the characters in the photo, and then m
net.sourceforge.zbar package and inside the Java file copied to your project java directory, the approximate structure is as follows:Of course you also use the source code like this, you can also pack these classes into a jar package.Call Zbar to identify the QR codeNow that all has been compiled and the jar file is available, we can call the encapsulated method in the jar to identify the QR code:byte [] ImageData = ...; image barcode = new
Build a Camera Application
Some developers may want to customize the Camera user interface in their applications, or provide some special functions. Creating a custom Activity requires more code than using Intent, but it can provide a better user experience.
Follow these steps to create a customized Camera interface:
1. Check and access
, cameraresolution.x,
CAMERARESOLUTION.Y, data);
Message.sendtotarget ();
Previewhandler = null;
} else {
log.d (TAG, "Got preview callback, but no handler for it");
You can see that the data in the preview is passed back over and then handler the way out.
Where to receive data:
@Override public
void handlemessage (Message message) {
switch (message.what) {case
R.id.decode:
LOG.D (TAG, "Got decode Message");
Decode ((byte[]) message.obj, MESSAGE.ARG1, message.arg2);
break;
Case R
1. Set the camera direction
2. Open the thread and preview thread
3. Set Parameters
4. Camera peripheral buttons
5. Auto Focus and touch focus
6. Take a photo
7. Face Detection
8. Location Management
9. rotation Management
10. Zoom
11. Video
The architecture of camera is a typical C/S architecture. The client side and user behavior are the functions of applica
automatically focus during recording. The default focus is the origin of the Camera coordinate system. The Camera coordinate system will be discussed later.
It is worth mentioning that not all mobile phones support continuous-video. If your project needs to enable continuous focus for those phones that do not support the continuous focus mode, there are usually the following ways:
the Camera application can control, such as the chip format, flash mode, and focus settings. This section lists common Camera features and briefly discusses how to use them. Most Camera functions can be accessed and set through the Camera. Parameters object. However, there are several important features that require s
Android Camera Real-Time Filter (8)1. What can Android Camera do?1. Function photo recording and video recorder (scanning applications, such as face recognition, business card recognition, and bar code
The following tool class is used to simplify and optimize the common Photo Taking methods to achieve no preview.
Import java. io. file; import java. io. fileOutputStream; import java. io. IOException; import java. text. simpleDateFormat; import java. util. date; import android. annotation. suppressLint; import android. annotation. targetApi; import android. app.
Since you are familiar with socket programming, you can also write a similar simple server client program. The raspberry pie still serves as the server, and the computer still serves as the client. Only now is the raspberry pie sent, the computer receives. The data is no longer a control command, but an image data obtained from a raspberry-sent USB camera. (implemented through the OPENCV and python-imaging
one, what can Android camera do? 1. function
Take photos
Video recording
Viewfinder (scanning applications such as face recognition, business card recognition, barcode recognition)
2, according to the camera
) { = focusmodelist.get (i) ; LOG.I ("Focus_mode", String.Format ("Camera focusmode=%s", Focusmode));}The output on my phone is as follows:Camera focusmode=autocamera focusmode=Infinitycamera focusmode=Macrocamera Focusmode= continuous-videocamera focusmode=continuous-picturecamera focusmode=manualThese few words are not complex, for mobile short video recording, the focus mode used should be continuous-video. This mode automatically focuses on
Today, I will simply summarize my previous learning articles and experiences. Here I will directly paste the code, hoping to provide the best learning reference for beginners, we also hope that more developers will join the android development team and participate in more innovative development methods, today, I will briefly explain a technical node that is the most fundamental and essential for Gesture Recognitio
In Android, there are two ways to use a camera to take photos, one is to call the system's own camera, the other is to write a camera interface.
We want to add the following permissions:
1. Call System Camera
The main steps to invoke the
(Platform.os = = = ' Android ') {Source = {Uri:res Ponse.uri, isstatic:true}; } else {Source = {uri:response.uri.replace (' file://', ' '), isstatic:true}; } this.setstate ({avatarsource:source}); }});
How to display pictures:Image source={this. State. Avatarsource} style={styles. /> Of course, we do not want to let the user choose the time, but directly call the camera or album, th
In the previous chapter, we completed the configuration of the Android Platform development environment, and also found a way to remove the OpenCV Manager API, then we start from scratch, the completion of a personal program, the implementation of the following functions:1. Identify the specified picture and draw the edge of the picture with a colored box2. Display a 3D model on the identified imageIt is not difficult to see that this is actually the
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