gamma banding

gamma-band.js

// gamma correction with narrow 8-bit channel leads to banding
// where all the values aren't used

// How many are used?

// node gamma-band.js | uniq - | wc -l

for (var i = 0; i < 256; i++) {
  var value = i;
  value = value / 255.0;
  // console.log(value);
  value = Math.pow(value, 1/2.2);
  // console.log(value);
  value = value * 255;
  // console.log(value);
  console.log(Math.round(value));
}