AI BG Remover- AI 智能抠图

RMwaterMark is an Android application for automatic, on-device background removal from photos. It targets users who want a quick way to isolate people or objects without sending images to a server: processing runs offline using the open-source auto-background-remover library (AI segmentation).

Core workflow

1. Home — Pick an image from the gallery, take a new photo with the camera, or tap one of three sample images to try the feature instantly.
2. Matting screen — Preview the original, then tap Remove background to run AI processing. A loading state explains that processing may take a few seconds (model load and inference vary by device).
3. After cutout — Choose a background: transparent (checkerboard preview), white, black, or several solid colors. Use Compare to switch to a side-by-side view (original vs. cutout) with labels; return to single-image edit when needed. Save writes a PNG to the gallery (under Pictures/RMwaterMark on modern Android). Choose again closes the flow to re-select an image.

Technical highlights

- Kotlin, Material 3, ViewBinding-free layouts with ConstraintLayout / NestedScrollView where appropriate.
- Activity Result API for gallery (PickVisualMedia) and camera (TakePicture + FileProvider).
- EXIF orientation handled when decoding bitmaps so camera photos are not shown rotated incorrectly.
- Internationalization: default English strings in values/ plus localized strings.xml for Chinese (CN/SG), Spanish, Hindi, Arabic, Portuguese (Brazil), Indonesian, Russian, French, Japanese, German, Korean, Turkish, Vietnamese, Thai.
- Adaptive launcher icon with gradient background, generated foreground art, and a monochrome layer for themed icons on Android 13+.
- Manifest: camera permission, optional legacy storage permission for old APIs, tools:replace for theme merge with the background-remover dependency.

Build

- JDK 11+, Android Gradle Plugin as in the project.
- Run ./gradlew :app:assembleDebug from the repository root.
- JitPack is required for com.github.GhayasAhmad:auto-background-remover.

Privacy note

Background removal is performed on the device. Images you save are stored using the platform MediaStore (or equivalent) like any other gallery export.

Limitations

- Quality and speed depend on the bundled model and device performance.
- Very large images are downsampled before processing to reduce memory use.
- The UI strings are app-supplied; product copy can be refined per market.