Spatial Imaging
Optical imaging instruments collect continuous spatial and spectral data across a single row of pixels as material moves past the view line. Deploying a hyperspectral line scan camera above a textile inspection frame allows continuous recording of full spectral profiles for every point across the moving fabric width. Internal diffraction gratings split reflected light into narrow contiguous wavelength bands spanning the visible and near-infrared spectrum.
High frame rates enable real-time detection of chemical finish non-uniformities and foreign fiber contaminants during high-speed roll winding.
Spectral Acquisition
Solid-state linear arrays capture spatial information along one axis while recording spectral dispersion along the perpendicular detector axis. Processing electronics stitch individual line scans into a coherent three-dimensional data cube representing spatial coordinates and spectral reflectance.
Performance Boundary
Low web speeds cause spatial oversampling and image distortion, whereas excess web speed exceeds sensor frame rates, creating uninspected gaps along the fabric length. Insufficient illumination intensity reduces signal-to-noise ratios in weak absorption bands, masking subtle fiber blend variations.
Quality Inspection
Calibrated spectral algorithms process line data instantaneously to flag elastane distribution flaws or polyester contamination in cotton webs. Automated alarm systems stop batching equipment when chemical coating defects exceed specified quality thresholds.
