| Test type | Description | |-----------|-------------| | | Scale calculation, measurement math, JSON serialization. | | UI | Drawing gestures, calibration workflow, save/export dialogs. | | Integration | CameraX lifecycle + overlay rendering (no lag). | | Real-world | Measure known objects (credit card = 8.5cm width) → verify accuracy. |
The app integrates seamlessly with the microphone and speaker hardware in TechView cameras. This turns your security camera into an intercom. techview camera app
fun getRealDistance(p1: PointF, p2: PointF, scalePixelsPerCm: Float): Float val pixelDist = sqrt((p2.x - p1.x).pow(2) + (p2.y - p1.y).pow(2)) return pixelDist / scalePixelsPerCm // returns cm | Test type | Description | |-----------|-------------| |
Techview Camera App: A Comprehensive Guide to Setup, Features, and Troubleshooting | | Real-world | Measure known objects (credit card = 8
In the app, select "Add Camera" or the '+' icon.
| Area | Requirement | |------|-------------| | | Use camera2 or CameraX API; support manual focus, exposure lock. | | Calibration | User places a known-length object (e.g., 10cm scale) in frame → drag endpoints → compute pixels/cm. | | Measurement tools | Line distance (auto-calculated in mm/cm/inches), angle (degrees), polyline length, area (polygon). | | Annotation tools | Text box, arrow, freehand draw, highlight rectangle. | | Persistence | All annotations stored as JSON layer (non-destructive). | | Export | Save as PNG with overlay; export raw measurements + metadata. | | UI | Minimal overlay buttons: Ruler icon, Text T, Arrow, Undo, Calibrate, Save. |