www19911024 / NatDeviceWithOpenCVForUnityExample

An example of improving performance of video preview on mobile platform by replacing WebCamTexture of Unity standard API with NatDevice.

NatDevice With OpenCVForUnity Example

• An example of a benchmark test integrating NatDevice and OpenCVForUnity. (Comparison between WebCamTexture and NatDevice API)
• An example of replacing WebCamTextureToMatHelper with NatDeviceCamPreviewToMatHelper.
• An example of native sharing and save to the camera roll using NatShare API.

Environment

• Anddroid (Pixel, Nexus 7) / iOS (iPhone8, iPhone6s)
• Unity >= 2018.3+
• Scripting backend MONO / IL2CPP
• NatDevice - Media Device API 1.0.2+
• NatShare - Mobile Sharing API 1.2.3+
• OpenCV for Unity 2.3.9+

Demo

• Android NatDeviceWithOpenCVForUnityExample.apk

Setup

1. Download the latest release unitypackage. NatDeviceWithOpenCVForUnityExample.unitypackage
2. Create a new project. (NatDeviceWithOpenCVForUnityExample)
3. Import NatDevice.
4. Import NatShare.
5. Import OpenCVForUnity.
   • Setup the OpenCVForUnity. (Tools > OpenCV for Unity > Set Plugin Import Settings)
6. Import the NatDeviceWithOpenCVForUnityExample.unitypackage.
7. Change the "Minimum API Level" to 22 or higher in the "Player Settings (Androd)" Inspector.
8. Change the "Target minimum iOS Version" to 11 or higher in the "Player Settings (iOS)" Inspector.
   • Set the reason for accessing the camera in "cameraUsageDescription".
9. Add the "Assets/NatDeviceWithOpenCVForUnityExample/*.unity" files to the "Scenes In Build" list in the "Build Settings" window.
10. Build and Deploy to Android and iOS.

Android Instructions

Build requires Android SDK Platform 29 or higher.

iOS Instructions

After building an Xcode project from Unity, add the following keys to the Info.plist file with a good description:

• NSPhotoLibraryUsageDescription
• NSPhotoLibraryAddUsageDescription

ScreenShot