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Tagged Questions

In the real world, a camera is a device that takes physical or digital photos. In the virtual world, it is used to aim at virtual objects and or move through a virtual scene.

learn more… | top users | synonyms

0
votes
1answer
9 views

Ios UIImageController delegate undeclared error

I know this question asked several times on this. but I follow both method to solved undeclared identifier self. I declared @interface in .m class
0
votes
0answers
5 views

Raspberry Pi Camera Module: How to preview image before capturing the image

I want to capture an image but before capturing it I want to see first the preview in order to capture the image properly. What algorithm/code should I use? Can anyone help me?
0
votes
1answer
20 views

Android - Camera API takes too much time to capture and save image

I am trying to use Camera API for my app. When I click take photo button, the UI hangs for about 10 seconds before responding further. I found a post on SO here, but the solution wasn't much specific....
-1
votes
2answers
13 views

UNITY3d The Camera Follow and Background move are not smooth

I just learn Unity3d for a while, then I have a question about The Camera Follow and Background move are not smooth. I create a cube with ragidbody2d , then i use two dufferent ways to make camera ...
0
votes
0answers
28 views

Send iPhone Volume Up Signal Over USB/Headphone Jack

In iOS, the camera app has a feature where it takes a picture when it receives a volume up signal in landscape layout. This feature is used by devices such as "selfie sticks" to trigger the camera ...
1
vote
1answer
18 views

Capturing image and setting it to UIImageView

I am trying to capture an Image and set it to the UIImageView, hence to create the camera I have the following code: class HomeController: BaseController, UIImagePickerControllerDelegate { var ...
0
votes
1answer
15 views

Camera API not stopping after capture

I have an app that uses the old camera API. Everything works fine on most devices, however, on some it will continue to preview even after the image is captured. The picture callback is still called ...
0
votes
1answer
20 views

libGDX make camera move faster upwards depends on time

I try to make a game, where camera will move upwards (with growing speed) and player must jump higher. If hi will slower then camera - game over. Question: how to make a movement of the camera faster?...
0
votes
0answers
11 views

Continuos saves of 2D arrays in Python

I'm writing a program for acquiring data from a sCMOS (scientific CMOS) camera. Since the plan is to acquire at high framerates, I would like to save to disk while I acquire, thus increasing the total ...
1
vote
1answer
23 views

Libgdx auto-scrolling camera

I'm developing a libgdx game. What I want to do is to create a screen where some squares "falls" from the top to the bottom. So: 1. I have to set a background image. 2. I have to generate some ...
2
votes
1answer
30 views

Android EXIF data Image from Camera or Gallery lost

I need to read some Exif properties of an Image (taken with the Camera or picked from the Gallery). Here is how I launch the Camera: Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); ...
-1
votes
0answers
29 views

Edge of texture while using glLookAt

There is big file texture 512x32 that contains few subimages 32x32 (16 pieces). Some objects in buffer have size (0.32f, 0.32f), some not (bigger). Texture coordinates are the same (offsetX, 0, ...
0
votes
0answers
20 views

App crashes on iOS (Phonegap) if multiple images are captured from camera

I am developing Phonegap Application and my application has scenarios where camera is used very frequently. In my application I have used custom camera plugin (https://www.npmjs.com/package/cordova-...
-1
votes
1answer
37 views

How to make camera follow object with tag

I made a player prefab with a tag Player that is spawned in the scene when the game starts.How can I make the camera follow the player using the Player tag. Currently using the following script ...
0
votes
2answers
19 views

How to reset state of initial ViewController?

I've 2 ViewController's: VC1 and VC2. In VC1 i've : @IBAction func cliclOnBtn(_ sender: UIButton) { CameraController.takePicture() } ... func imagePickerController(_ picker: ...
0
votes
0answers
25 views

Poor quality on ImageView

I find this strange, I noticed when using the front camera on my iOS which will then output the image to my UIImageView, the result has poor quality. However, with Snapchat the quality is amazing! ...
0
votes
0answers
15 views

unbound method must be called with instance as first argument (got str instance instead)

from picamera import PiCamera from time import sleep camera = PiCamera camera.hflip = True #camera ad effetto specchio (flip orizzontale) def registra_video(): camera.start_recording('video.h264'...
0
votes
1answer
20 views

Detecting camera's height and width in a React Native mobile app

I am using the react-native-camera package to make photos inside a React Native Mobile app. Within the React Native part of the app I use Base64 format to encode the images and ImageStore to store ...
0
votes
1answer
12 views

No (USB3) camera device on ubuntu

After installing the necessary driver, mvBlueFox3 camera is well detected according to demsg (ubutnu 16.04). However, when I launch factory GUI, I get the error message telling "No Device"... The ...
0
votes
0answers
19 views

Python - OpenCV - Calibrating Camera and Rectangle's Border Detection

I am having problems detecting a rectangle's border after the camera calibration using the OpenCV official documentation with a chessboard. This is the following code I am using: cap = cv2....
0
votes
1answer
21 views

Switch BACK and FRONT camera in android

I'm trying to switch camera in android private Camera mCamera=null; private CameraPreview mPreview; public FrameLayout preview; @Override public void onCreate(Bundle savedInstanceState) { super....
1
vote
2answers
41 views

Null object reference onReceive BroadcastReceiver

I'm using two activities, the main one, and the camera one. In the mainActivity i call startActivity(new Intent(this, CameraActivity)); Now, when camera activity starts, the onCreate() is: @Override ...
0
votes
0answers
20 views

Overlay frame on ionic 2 camera

I'm trying to use Camera plugin in my ionic app. I want to have some overlay frames on preview for camera but haven't find anything similar to it in description here. Also I tried to use CameraPreview ...
0
votes
1answer
7 views

Adjusting brightness in android camera api like default camera on touching the camera screen

I am preparing a custom android camera app and wish to adjust the exposure/brightness of the camera on touch event. The default values look a bit darker than the default camera . I tried using ...
0
votes
0answers
16 views

Javascript getUserMedia set FOCUS. What alternatives are there to control camera focus?

Good afternoon! Just I describe what I've read quite a huge amount of literature, before asking a question. Unfortunately, the normal solution not founded. There is a project written in Javascript. ...
0
votes
1answer
21 views

Change the default camera app in Windows 10 desktop

How to change the default camera app in Windows 10 desktop ? The option is available from Settings in Phones but not from Desktops
0
votes
1answer
19 views

What is the difference between preview size and picture size of android camera

In an app which uses the camera, where I need to show the preview of the camera, I can set the preview size by getting all supported preview sizes and find the best one. Should I also set best picture ...
1
vote
0answers
21 views

Top and bottom of Photo captured using CameraCaptureUI is getting stretched

CameraCaptureUI captureUI = new CameraCaptureUI(); captureUI.PhotoSettings.Format = CameraCaptureUIPhotoFormat.Jpeg; captureUI.PhotoSettings.MaxResolution = Windows.Media.Capture....
0
votes
0answers
6 views

dequeuebuffer bufferqueue has no connected producer android 7.0, Camera freeze

When i get my app on background using home button, On devices log i can see the error "dequeuebuffer bufferqueue has no connected producer" and camera gets freeze. Camera will work again when i ...
0
votes
1answer
20 views

Open Camera app installed from a UWP app and capture image

Instead of creating a Windows built-in camera UI (CameraCaptureUI) or using a custom MediaCapture control and capture picture I want to open any Camera App downloaded in the device to capture an image ...
0
votes
1answer
14 views

Android front flash camera using screen whitening

I want to capture images using the front facing camera "flash" trick similar to Fornt Flash. I know that it might involves another layer on top of the camera preview as suggested here and here. Can ...
1
vote
0answers
11 views

How could one extract visible and near-infrared images data separately from Raspberry Pi Noir V2 camera?

I am trying to extract Visible and Near-infrared images data separately from a single Image taken using Raspberry Pi Noir V2 camera without blue filter. I'm using Raw data format for the conversion.
0
votes
0answers
18 views

Picture not going into MediaStore.Images.Media.EXTERNAL_CONTENT_URI

I have an issue that is only occurring on my tablet; Nexus 7 6.0.1 It is not present on my phone; Galaxy S6 5.0.2 I have a method to grab all images on external sd, as follows private ArrayList<...
0
votes
1answer
14 views

Unity rotating camera with accelerometer

I'm trying to rotate the camera around a cube with LookAt() function and using the accelerometer in an Android device. It works well. But I want the rotation to stop at some value in the Y axis. Here ...
1
vote
1answer
19 views

Android Camera2 YUV_420_888 Y Channel Interpretation

I am writing a simple Android application where I retrieve frame buffers using ImageReader.OnImageAvailableListener to acquire the latest image and process the Y plane. I use this plane to calculate a ...
0
votes
0answers
17 views

How to use TriangulatePoints() between 2 cameras placed at 90 degrees to each other

I am trying to learn the concepts of image processing and I am doing a small project. I have a quadrocopter with 4 markers placed on it. I am using two cameras placed at 90 degrees to each other to ...
0
votes
2answers
34 views

How to save image in storage folder as well as in database when I changed profile picture in android?

My mainactivity has code which takes picture from camera and from gallary . public class MainActivity extends Activity { private int REQUEST_CAMERA = 0, SELECT_FILE = 1; private Button ...
0
votes
1answer
30 views

Depth or 3D camera for machine vision or robotic application in the range 0.2 meter to 5 meter?

I have found two depth/3d camera. Intel SR300 Zed camera Zed camera gives a map at a range 0.7 meter to 20 meter. But my application needs minimum range for depth approx 0.2 meter. Intel SR300 ...
-1
votes
0answers
23 views

iOS Camera Colour Space

Just a question out of curiosity. I'm using OpenCV and was wondering for consistency do the iOS cameras (I'm working on the Facetime camera right now) use the RGB colour space? Thanks!
0
votes
0answers
11 views

How to calculate the vertical tilt angle along y axis?

I want to calculate the angle θ using sensors of an android phone.Got no idea how to get that vertical angle along y axis.
0
votes
0answers
17 views

Show captured image

I have implemented the google sample of the camera 2 api, but I can't figure out how to show she captured image with a button overlay. All examples I can find just saves the image to storage. I need ...
0
votes
0answers
12 views

Display Snapshot image from IP security camera to Website

I have an IP security camera that is capable of uploading an image to my web server at a specific interval (lets say every 20 seconds). The problem is, it appends the date / time to every image it ...
0
votes
0answers
52 views

phonegap build cli-6.5.0 Android camera crash/refresh app

I changed the phonegap build version to the new cli-6.5.0. Before, i could use camera to had picture but now, when i use camera, the app crash/refresh. I didn't change my code but it looks like it is ...
0
votes
0answers
11 views

Camera not opening completely in iMessage Extension

I am trying to open native camera in iMessage extension but it is getting hidden behind iMessage elements. Please refer image below I want to open camera from app without these elements. Can anyone ...
-4
votes
0answers
16 views

Is it possible to controlling gopro camera automatically using Java? [on hold]

I have a project from my lecturer. I'm asked to control go-pro camera's focus automatically using java programming language. Is it possible to do so? If yes, can somebody teach me how?
0
votes
0answers
14 views

File inputs photos taken with camera are not taking the right orientation

When I click on my input and choose to take the photo with the camera the image is not oriented properly on my Galaxy S5 (it works on an htc m8). I want it to be properly displayed on a preview canvas ...
-1
votes
0answers
16 views

Get pixel value from camera without preview

I want to build a program where the amount of pixels the camera has been received, but no preview. And it is important that results are returned in less than 1 second .Like Lux lite app that quickly ...
0
votes
0answers
24 views

React-Native-Camera package and Android Lollipop 5.1.1

The package react-native-camera does not compile after downgrading from API level 23 (Marshmallow). After downgrading to API level 22 (Lollipop) (used on the test device), I started seeing this error,...
0
votes
0answers
41 views

React-Native-Camera OutOfMemoryError on Android

The issue 590 on https://github.com/lwansbrough/react-native-camera/issues/590 contains the same bug report, but in more detail. The react-native-camera package crashes my React Native Android app, ...
0
votes
0answers
19 views

dose SONY Camera SDK support setter API such as setIsoSpeedRate , setShutterSpeed on A7

I want to develop a camera tool on Android , need to set shutter speed ,aperture ,IOS remotly base on Manual mode. My camerra is Sony A7. when I call getMethodTypes , i can see setFNumber ...

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