[RELEASED] OpenCV for Unity

[EnoxSoftware1]

@ghasedak3411

hi , i use OpenCV_for_Unity_2.3.8
and mobile : xiaomi note 5

This picture was taken with my mobile camera at one time

And this picture with OpenCV

With a slight difference, there is the same problem with other phones

I set the frame to 15 (avoidAndroidFrontCameraLowLightIssue = true)and that just makes the light a little better and still different from the Android camera.

Please help me, thank you

The problem seems to be due to a bug in Unity’s WebCamTexture API.

Android WebcamTexture in low light (only some models)

Hey Unity Folks, I’ve been having some issues using webcamtexture on android in low light conditions. This isn’t a problem on all androids, in fact, the picture looks fine on my samsung s7. On the google pixel2 on the other hand, the front facing camera is very dark in comparison to the native camera when indoors, to the extent that you can see a silhouette of your face, but that’s all. I’ve attached some photos so you can see what I am talking about. If you go outside, the image quality does …

[RELEASED] OpenCV for Unity page-33#post-3445178
Android Native Camera Low Light/Low ISO - Questions & Answers - Unity Discussions

I actually tried the simple code (without OpenCV) using WebCamTexture but found that some models (google pixel) had the same problem.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class WebcamTextureLowLightIssueOnAndroid : MonoBehaviour
{

    WebCamTexture webCamTexture;

    // Use this for initialization
    void Start()
    {
        var devices = WebCamTexture.devices;
        for (int cameraIndex = 0; cameraIndex < devices.Length; cameraIndex++)
        {
            // get front camera.
            if (WebCamTexture.devices[cameraIndex].isFrontFacing == true)
            {
                var webCamDevice = devices[cameraIndex];
                webCamTexture = new WebCamTexture(webCamDevice.name, 640, 480, 30);
                break;
            }
        }

        webCamTexture.Play();

        gameObject.GetComponent<Renderer>().material.mainTexture = webCamTexture;
    }

    void OnDisable()
    {
        if (webCamTexture != null)
        {
            webCamTexture.Stop();
            Destroy(webCamTexture);
            webCamTexture = null;
        }
    }
}

And I reported the bug a few months ago using Unity Editor’s Bug Reporter and exchanged several times with Unity developers, but unfortunately, the report seems to have been closed now, without being able to reproduce the problem in the Unity-side verification environment.
To my knowledge, this problem remains unfixed.

To fix the problem, many people need to file a bug report.
Could you report bugs to Unity as well?