14,720 questions
1
vote
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106
views
Capture Image Only When Camera is at a Specific Distance from Object
I’m building a Flutter app where the user can take pictures of objects, but I want the capture button to be enabled only when the camera is at a specific distance from the object.
I am using the ...
0
votes
1
answer
43
views
Flutter web: cameraNotReadable error when calling availableCameras()
i am using "cameara" flutter package
when i am trying to read all cameras on web-app device (Laptop with multiple camear options)
getting this error from camear package:
cameraNotReadable, ...
- 235
-1
votes
1
answer
82
views
OpenCV cannot undistort camera
I got this camera 170 FOV, put it under my car's winch at the front and I just cannot unwrap the image (calibration video and images). I use this repository for my 360 car view project.
As calibration ...
- 9
3
votes
2
answers
223
views
Flutter camera plugin records dark/black videos on Android - preview is fine but recorded video is dark
I'm developing a Flutter app with video recording functionality using the official camera package (version ^0.10.6). The camera preview looks perfect with correct brightness, but when I record and ...
- 804
1
vote
0
answers
98
views
AVCaptureDevice - Getting a List of Cameras Including Ones with Virtual 2x Crop
So using AVCaptureDevice.DiscoverySession gets you each dedicated camera nowadays.
let devices = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInWideAngleCamera], mediaType: .video, position: ....
- 3,024
0
votes
0
answers
79
views
How can I change the camera's CFrame while still having standard camera controls?
I'm trying to invert the depth of the camera (multiplying the camera's CFrame by (0,0,0, -1,0,0,0,1,0,0,0,1). To my knowledge, the only way I can implement this is by setting the camera type to ...
- 1
0
votes
0
answers
90
views
Android Cuttlefish Camera Passthrough - No Documentation or Working Implementation
I'm trying to enable host camera passthrough in Android Cuttlefish but cannot find any working documentation or implementation. I've tested on multiple setups without success.
Setup Details
Host ...
- 1
0
votes
0
answers
121
views
OV2640 register settings for 640x480 vga
I am trying to configure the ov2640 camera using the registers given below. Unfortunately, I am getting 800x600 rather than 640x480. Also, I'd expect 2 bytes per pixel on YUV422 mode but I am getting ...
- 569
0
votes
1
answer
43
views
Save and read photo on Android 11 using Xamarin.Android
I can save a photo from camera intent to Mediastore Public Picture Directory, but the photo cannot be read back by the app.
private bool DoPhoto(int KeepAsking)
{
Intent intent = new Intent(...
0
votes
0
answers
63
views
OV7670 black and white image capture - contrast and brightness
I have an OV7670 camera which I have set to mode YUV. Using only the Y bytes, I'd like to have black and white images to detect an aruco marker. The uc that I am using, an nrf9161 is low on memory and ...
- 569
2
votes
1
answer
239
views
How to place and orient RealityKit camera
I'm really struggling to get the camera to behave even remotely as expected in a RealityKit app (where I have set RealityViewCameraContent.camera to .virtual).
I have a programmatically generated ...
- 1,513
2
votes
1
answer
66
views
Rgb565 to rgb888 error in the Nicla Vision
I'm running into a problem converting raw rgb565 into rgb888. I'm getting psychedelic looking images:
I followed the advice from this forum post, but I have not been able to fix the problem. Has ...
0
votes
0
answers
48
views
When does `AVCapturePhotoOutput` start and stop accumulating light (exposure)?
My question is not a duplicate of AVCaptureDevice's exposureDuration and iso not honored by AVCapturePhotoOutput. In my example, I capture RAW Bayer image and per Apple's own documentation "...
- 125
0
votes
1
answer
24
views
why does ros launch param uses max exposure
i am trying to use ros for image acquisition on a blackfly flir camera , i have followed the install instructions, and it seems to work when i launch my nodes, but it looks like ros is using the max ...
- 148
0
votes
0
answers
26
views
Android ndk-build fails with "LOCAL_SRC_FILES points to a missing file" after integrating libturbojpeg.so 3.0.2
I recently upgraded from libjpeg-turbo 1.5.0 to 3.0.2 and attempted to integrate libturbojpeg.so into an Android Studio project using ndk-build. However, the build process fails during ndkClean or ndk-...
2
votes
1
answer
149
views
How to animate smooth camera transition between wide and ultra wide lenses like iPhone native Camera app?
I'm working on a custom camera implementation for iOS using AVCaptureSession and AVCaptureDevice. I know how to handle zoom in and zoom out, and how to switch between cameras (wide, ultra wide, etc.). ...
0
votes
0
answers
52
views
IOS 17 camera capture not working in Next.js with <input type="file" capture>
Good day everyone,
I'm working on a Next.js project where I need to allow users to upload images using their device's camera. Here's the relevant snippet:
import { Loader2, Camera } from "lucide-...
- 292
0
votes
0
answers
44
views
Add overlay on camera and click photo if paper is inside the overlay in flutter
I'm working on a Flutter app where I need to implement a document scanner feature. The requirements are:
When the camera opens, there should be an overlay (for example, a rectangular frame) displayed ...
- 21
0
votes
1
answer
295
views
.NET MAUI app crashes on iOS when I check camera permissions
My mobile app uses a wide variety of hardware features, but for some reason, checking the permissions for the camera causes regular crashes, and I can't figure out why.
I have the following check for ...
- 194
0
votes
0
answers
35
views
Vuforia camera is supported for splitview
Vuforia support for Split View on iOS: I have developed an AR application for iOS using Unity 2020.3.33f1 and Vuforia 10.8.9. In Split View, the camera gets paused. Is this because Vuforia doesn't ...
- 1
1
vote
0
answers
201
views
iOS: Camera screen is black on OS version 18.3 and above not able to capture the image
I have been using camera API for an iOS application which launches the camera and captures the image. So user of my app has reported the issue that they are not able to capture the images sometimes ...
- 289
1
vote
0
answers
33
views
iOS AVmulticamPiP Video recording issue for react-native bridging
For now, I'm developing front and back camera simultaneous recording and I found this code. I added some code snippet. You can take a look the full code in this url (https://github.com/Lax/Learn-iOS-...
- 11
0
votes
2
answers
55
views
SystemChrome.setPreferredOrientations not affecting camera preview orientation in Flutter using camera plugin in iphone 12
I'm building a Flutter app that uses the camera plugin to capture photos, and I've locked the app orientation using:
SystemChrome.setPreferredOrientations([
DeviceOrientation.portraitUp,
...
- 2,380
1
vote
0
answers
182
views
How to Add a Text/Watermark to Video Using CameraX OverlayEffect API?
I'm trying to add a watermark text to a video while recording using CameraX's OverlayEffect API.
Initially, I considered using FFmpeg for this, but:
Significantly increases the app size.
Requires ...
- 11
0
votes
1
answer
94
views
Get real time temperature data from HIKVISION thermal camera using ISAPI
Does anyone have an idea how to do that?
Camera Model Number is : (DS-2TD2617B-3/PA thermal and optical bullet camera)
- 397