Image Luminance Centroid Report
Report alpha-weighted decoded-luminance center in pixel and normalized coordinates.
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Report alpha-weighted decoded-luminance center in pixel and normalized coordinates.
Export a complete 256-bin visible decoded-luminance distribution as JSON.
Report visible luminance median and robust median absolute deviation.
Report visible luminance mean, standard deviation, skewness, and excess kurtosis.
Compare visible decoded-luminance means across four fixed geometric quadrants.
Reduce isolated RGB pixel outliers with a per-channel 3x3 median filter.
Re-encode a still image locally to omit common EXIF and container metadata.
Build a four-quadrant reflection tile without moving output alpha.
Create a bounded horizontal sample-average trail while preserving output alpha.
Report RMS luminance residual from a local three-by-three median.
Encode normalized Sobel luminance-gradient directions as an RGB normal-map PNG.
Render local colour from the most populated bounded luminance bin.