QR Code Reader (Full Frame Tile Scan + Near Mode + Focus Meter)
Start
Stop
Camera:
Target Res:
1920x1080
1280x720
640x480
Scan FPS:
5
10
15
Tiles:
1x1
2x2
3x3
4x4
Center-first
Draw grid
Near-mode (downscale retry)
Focus gate:
Off
Low
Normal
Strict
Zoom:
1.0x
Focus
0
Copy
Clear
Idle
Center-crop preview (what “small window” mode sees):
Last-hit tile preview (what decoder successfully read):