image-capture

问题 Its a very interesting and new thing for me to implement and learn. There are some requirement of my application. For that I have searched a lot but couldn't find proper and valuable thing or links. So i am posting my question here. The functionality are : 1) In Samsung device there is Safety Assistance menu in which you can find Emergency Mode option. 2) Now while Emergency mode at that time I want to create a one or more primary contacts to Emergency Mode . So now while holds the home and

问题 This question already has answers here : user capture div as image and save to computer (4 answers) Closed 2 years ago . I have some div tags containing charts rendered by javascript. I want to export them in an image format by the press of a button. I don't know if it's possible to capture a div tag as an image using javascript ! so there i'm asking for tips and hints. Thanks in advance. 回答1: You can create an image using the canvas element. If your charts are rendered using HTML elements

问题 This question already has answers here : user capture div as image and save to computer (4 answers) Closed 2 years ago . I have some div tags containing charts rendered by javascript. I want to export them in an image format by the press of a button. I don't know if it's possible to capture a div tag as an image using javascript ! so there i'm asking for tips and hints. Thanks in advance. 回答1: You can create an image using the canvas element. If your charts are rendered using HTML elements

问题 As the title says, I'd like to capture an image from a minimized window... is that even possible? I use the CaptureAnImage from msdn and it works, unless the window is minimized. One solution I tried was maximizing it, capturing the image, then returning it to it's original state. Only problem is the animation looks ugly and I'd like to find an alternative... Here is how I tried it: WINDOWPLACEMENT wInfo; UINT originalPlacement; GetWindowPlacement(hWnd, &wInfo); originalPlacement = wInfo

问题 I am capturing the image using OpenCV in C++ firstFrame = cvQueryFrame(capture); it is easy to set the width and height properties by cvSetCaptureProperty( capture, CV_CAP_PROP_FRAME_WIDTH, WIDTH ); cvSetCaptureProperty( capture, CV_CAP_PROP_FRAME_HEIGHT, HEIGHT ); I wonder if there is a way to specify the color depth as well without further processing the frame? 回答1: According to the documentation, you should be able to do it using CV_CAP_PROP_FORMAT if you use the function retrive() to get

问题 In my project I am using FileProvider.getUriForFile with given provider_paths.xml file: <?xml version="1.0" encoding="utf-8"?> <paths> <external-files-path name="StrengGeheim" path="/" /> </paths> This I added in my AndroidManifest.xml inside tag: <provider android:name="android.support.v4.content.FileProvider" android:authorities="${applicationId}.provider" android:exported="false" android:grantUriPermissions="true"> <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android

问题 Hi can anyone help me how to find the maximum number of photos that can be captured with the available/remaining storage space in android programatically. 来源： https://stackoverflow.com/questions/29364532/calulate-space-for-photo-capture-in-android

问题 I have these codes. Camera opened, the picture is taken, but when I click on "ok" button, nothing happened. The only way to get back to previous activity is clicking the "x" button which is not useful for me :). What is the problem? (onActivityResult method is not finished yet.) (I used to use this algorithm with Android.provider.MediaStore.ACTION_IMAGE_CAPTURE intent. there was everything OK. I have no idea why I have problem now.) public void onClick(View v) { Intent getCameraImage = new

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 8 years ago . We need to capture live video and display easily on Linux. We need a cheap card or USB device with a simple API. Anyone want to share some experience? 回答1: Use the video4linux library. I've used it with a c++ program and was able to capture webcam frames within about an hour. (Very easy to use and setup) 回答2: If

问题 I want to capture a picture and upload it to Cloudinary directly. How can I know the name of the pic to set it at the upload statement cloudinary.uploader().upload("nameofthepic", Cloudinary.emptyMap()); . Here is my code: public class Camera extends ActionBarActivity implements View.OnClickListener { Button b; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.camera); b= (Button) findViewById(R.id.button); b