All Questions
4,384
questions
-4
votes
0
answers
40
views
Capture image from android camera [closed]
I am working on an application that works with cameras in android using java and android studio.
in python or cpp we can access camera with something codes like this:
import cv2 # opencv
vc = cv2....
- 3
0
votes
0
answers
32
views
OpenCV finger extraction from image / liveview from camera and draw contour around finger
I would like to extract a finger from an androidx.camera.view.PreviewView in Android java.
I am using an ImageAnalysis Object to run a analyze() function on an ExecutorService.
The analyze() has a ...
- 1
-1
votes
0
answers
32
views
How to convert OpenCV Threshold into a one bit per pixel bitmap in Android?
I am trying to convert the photo I take into one bit per pixel Bitmap in Android (Kotlin).
Imgproc.threshold(tmp,tmp, bwThreshold.toDouble(),255.0,Imgproc.THRESH_BINARY)
Utils.matToBitmap(tmp,...
- 1
0
votes
1
answer
30
views
Importing OpenCV in Android Studio
I want to import OpenCV in android studio but unable to do it. I looked on internet but all the procedure given make me stuck at one place. Whenever i try to import module from source it says "...
0
votes
1
answer
55
views
Compiling OpenCV for Android on Windows with CMake - make still tries to link "dll" files
This is how I set up the cmake, in the root of OpenCV 4.9.0. repository:
cmake -DCMAKE_ANDROID_NDK=D:\...\lib\AndroidSDK\ndk\25.1.8937393 \
-DCMAKE_SYSTEM_NAME=Android \
-B..\OpenCV_4.9.0_builds\...
- 52.1k
-2
votes
1
answer
52
views
How to use imshow() in Mobile App on Kotlin?
I decided to create a computer vision model that detect an object. It takes a real-time image from camera and show rectangles of detected objects. But I dunno how to visualize OpenCV imshow() function....
- 1
0
votes
1
answer
39
views
How do you access images at a URL from within the JNI?
I am working on a project that involves matching images on an android phone using local resources. A general overview of the workflow is to take a camera image, generate a locality sensitive hash for ...
- 101
0
votes
0
answers
94
views
How do i integrate python script in a react-native app targeted for android
Guidance needed. I have a Python script that uses MediaPipe and OpenCV modules to map a 2D image of clothing on the person's body based on the extracted coordinates. This is done in real-time (tested ...
0
votes
0
answers
66
views
Opencv android using using CAP_MJPEG nor CAP_GSTREAMER unable to get frames from ESP32 camera stream
I am trying to capture frames from an esp32-cam set up to my android phone, hoping to be able to do object detection from that esp32-cam's stream. I know my esp32 is also oputting a MJPEG stream, and ...
- 382
0
votes
1
answer
222
views
How to package openCV android sdk with an android plugin?
I need to create an android plugin for Godot Game engine. My android plugin needs an openCV feature. I have managed to integrate openCV in my android project using this tutorial but I need openCV in ...
- 171
0
votes
2
answers
55
views
kivy buildzeor stderr: ModuleNotFoundError: No module named 'cv2'
I want to use OpenCV and Kivy to create an APK, with the function of taking photos and applying the Canny edge detection algorithm to the images. The code is as follows:
from kivy.app import App
from ...
- 1
0
votes
0
answers
49
views
Android 14 crashing with libc of OpenCV
I'm doing a project in which I use OpenCV to manipulate some images, and everything is ok on android 13 or previous, but I've updated my S23 to Android 14 (OneUI 6.1) and now android studio crash with ...
- 3,430
-1
votes
1
answer
38
views
Creating multiple instances of a class with different initializing values in Flutter
I am using this package and creating two instances of its class PixelMatching which uses dart ffi and some c++ code to perform feature matching using open cv. I initialise the two instances with ...
0
votes
0
answers
47
views
"id: 'com.android.application', version: '8.3.0', apply: false" when importing module (openCV)
I'm new to Android. I want to connect ESP32 cam with android and process using openCV.
I downloaded the latest version of Android studio and want to import some module (openCV). Both the Android ...
0
votes
0
answers
36
views
Applying KMeans clustering from OpenCV cannot return a Bitmap with alpha channel
I'm working in a task for applying kmeans clustering algorithm from OpenCV with Kotlin inside of an android app.
I'm got a piece of code that works, and result is an a reduced colors of the original ...
- 3,430