Layer 1: Input
Video capture from cameras, webcams, and video files
The Input Layer is the entry point for all video sources into the VisionLog system. It handles video capture from webcams, video files, and image files.
- Purpose: Capture video/image input for face processing
- Input Types: Webcam, Video Files, Images
- Library: OpenCV
Direct-connected cameras for real-time processing.
| Feature | Specification |
|---|
| Connection | USB |
| Resolution | 1280x720 (default) |
| Frame Rate | 30 FPS |
| Use Case | Real-time attendance, enrollment |
Offline processing of recorded footage (CCTV, recordings).
| Format | Extension | Description |
|---|
| MP4 | .mp4 | Most common, H.264/H.265 |
| AVI | .avi | Windows standard |
| MKV | .mkv | High quality container |
| MOV | .mov | Apple format |
| WMV | .wmv | Windows Media |
Single image processing for enrollment or recognition.
| Format | Extensions |
|---|
| JPEG | .jpg, .jpeg |
| PNG | .png |
| BMP | .bmp |
| WebP | .webp |
| Mode | Description |
|---|
| Camera | Real-time recognition from webcam |
| Video | Process recorded video files |
| Image | Single image analysis |
| Folder | Batch process folder of images |
For video processing, frames can be skipped for performance optimization.
| Skip Value | Use Case |
|---|
| 1 | Process all frames (maximum accuracy) |
| 5 | Balanced (default) |
| 10-30 | Fast scan mode |
- Height: Face level (1.5-1.8m)
- Distance: 0.5-3 meters for clear faces
- Lighting: Even, front-facing light
- Angle: Direct face view preferred
- Background: Avoid busy patterns
| Factor | Recommendation |
|---|
| Minimum Face Size | 50x50 pixels |
| Resolution | 720p or higher |
| Lighting | >300 lux |
| Focus | Sharp, not blurry |
| Scenario | Frame Skip | Notes |
|---|
| Real-time | 1 | Process all frames |
| Standard | 5 | Balanced (default) |
| Fast scan | 10-30 | Quick overview |
| Setting | Description | Default |
|---|
| Camera Index | Default camera device | 0 |
| Frame Width | Capture resolution width | 1280 |
| Frame Height | Capture resolution height | 720 |
| FPS | Target frame rate | 30 |
| Frame Skip | Process every Nth frame | 5 |
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