From images with 2 dimensions of space, 1 dimension of color, and a focal point:

Determination of the focal point (center) of the image;

Points of light in the background.

Scan method

Image mapping

Determination of a predominant color for each section;

Limits and filters for color spectrum classification;

Saturation filter: Saturation < 20% were excluded;
White filter: Luminosity > 90% were treated as points of light;
Black filter: Luminosity < 11% was treated as a black point or background color;
Red Spectrum: 0º<Matrix<15º or 346º<Matrix<360º;
Orange spectrum: 16º<=Matrix<=42;
Yellow spectrum: 43º<=Matrix<=70º;
Green spectrum: 71º<=Matrix<=155º;
Blue spectrum: 156º<=Matrix<=212º;
Indigo spectrum: 213º<=Matrix<=255º
Purple spectrum: 256º<=Matrix<=282º;
Pink spectrum: 283º<=Matrix<=345º.
Stars on the background: Concentration of white dots in the sections.

Data joining for each scan ray;

Correlation of color spectra in musical scales

Determining the position of the notes in relation to the image layers:

For different musical styles, different scales and different instruments are defined.

2023 NASA Space Apps Challenge

Arcobaleno