// TECHNICAL FIELD GUIDE
SPECTRAL IMAGING UNIT
1.0SYSTEM OVERVIEW
This manual is the primary field reference for the Spectral Imaging Unit. It covers all operational procedures, interface elements, and system protocols required for active deployment.
The device is a multi-sensor spatial imaging unit running on dedicated processing hardware. It fuses a wide-spectrum imaging camera, depth sensor arrays, and Structured Light Sensor (SLS) data against an Environmental Anomaly Index. This index mathematically compares the current frame against a continuously updated baseline of the physical environment. When the index drifts past a calibrated threshold, the unit registers a DETECTION EVENT.
2.0PRIMARY INTERFACE ANATOMY
The interface is divided into functional operational regions. The primary display provides a direct visual reference of the active tracking state.
2.1 Top bar and detector control
Top Bar. System glyph, active source label, current MODE (ANOMALY / SLS), current VIEW (RGB / DEPTH), current ENV preset, current CLASS, and a live frame counter.
Detector Bar. Four primary status chips: FACE, BODY, SPECTRAL, and SLS. Each chip glows cyan when that specific detector array is armed. Tap a chip to toggle that telemetry channel on or off.
3.0SYSTEM METERS (LEFT RAIL)
Live instrument readouts showing continuous environmental updates. The system tracks the following baseline metrics.
Technical. Mean brightness of the frame (0 to 255), plus the delta from the moving-average baseline. Literally counts photons hitting the camera sensor. "cd/m2" is a real photometric unit.
Watch for. Sudden drops of more than 5 below baseline mean something occluded the lens. Sudden spikes mean a brief light source appeared. Sustained drift over time means the room's lighting is actually changing, not paranormal.
Technical. Shannon entropy of the RGB histogram, averaged across the three color channels. Measures how dispersed vs. concentrated the frame's colors are. "H" is the standard symbol for entropy.
Watch for. Sudden collapse means a uniform thing entered the frame (a hand, or a cloud of smoke thickening). Sudden expansion means something with a different color palette appeared (a face, a new object). Steady-state oscillation is just smoke moving; ignore it.
Technical. Dense optical flow. For every block of pixels, compute where it was one frame ago. The dominant direction (degrees, 0 = right) and magnitude (pixels/frame) tell you which way the smoke is drifting and how fast.
Watch for. Direction stays consistent for 5+ seconds then suddenly rotates 90 degrees or more means something disturbed the flow. Magnitude doubles or more means something moved through the smoke that was not part of the smoke.
Technical. Variance of the optical flow field, how aligned all the local motion vectors are. 1.0 = every block moving in lockstep; 0.0 = pure chaos. Sigma is statistical standard deviation.
Watch for. This is the primary spatial disturbance meter. A clean smoke cloud moves as one body (coherence near 1.0). When an object pushes through it, the smoke separates around the object and coherence drops sharply. Drop below 0.5 for more than half a second means something is genuinely disturbing the flow.
Technical. L2 distance (pixel-wise) between the current frame and the exponentially-weighted moving average of recent frames. Tells you how different now is vs. what has been typical for the last few seconds.
Watch for. The detector's adapt-to-the-room mechanism. Anything new in the room makes this spike. Climbs and stays elevated means something new entered the scene and stayed. Spikes briefly then returns means something flashed through.
Technical. Composite confidence score. A weighted blend of the best candidate region's score (50%) multiplied by inverse field coherence (30%) multiplied by normalized baseline deviation (20%). The unified "is something happening" number.
Watch for. This is the meter that drives auto-detection. Above the threshold (default 40%) the system fires a SPECTRAL ANOMALY detection. Above 60% is a strong hit. Above 80% is exceptional. The threshold is set in CONFIG.
4.0SLS MODE (RIGHT-RAIL TRIO)
Visible only when the unit is shifted into SLS tracking mode.
- Subjects tracked. Number of human bodies currently detected by the neural network with at least one valid keypoint. Watch for: count exceeds visible people in frame means an unexplained figure.
- Avg confidence. Mean confidence score across all detected keypoints (joints). Higher is more clearly humanoid. Watch for: sustained over 60% on a figure that should not exist.
- Kinematic coherence. Inverse-variance of keypoint confidences. Penalizes "Frankensteined" detections where some joints are super-confident and others are noise. Watch for: above 0.7 on a detected figure that should not be there means the detection is internally consistent, not just noise pretending to be a person.
5.0DATA ARCHIVE AND RECALL
All detection events are automatically logged to the internal solid-state drive for post-operation review.
5.1 The detection archive (gallery)
Pressing G or tapping the GALLERY button opens the master database.
- Grid view. Displays all session data cards, sorted chronologically. Each card shows a snapshot thumbnail, detection type, intensity class, and confidence percentage.
- Depth badge. A cyan "D" badge indicates that the capture successfully paired visual data with a complete spatial depth map.
6.0FIELD PROTOCOLS
- Reset the baseline in new sectors. Step into a new physical room, wait six seconds, and verify that the log displays BASELINE NOMINAL before beginning your sweep.
- Event documentation. When a detection event occurs, the system logs the data autonomously. The unit's sensors process anomalies across a wide spectrum, so visual confirmation with the naked eye is not required for a valid reading.
- Sensor accuracy. The unit mathematically processes exactly what its physical sensors record. Avoid dismissing readings as system errors. Investigate environmental variables that may have triggered the mathematical response.