image-js
Version:
Image processing and manipulation in JavaScript
20 lines • 842 B
JavaScript
/**
* Get the shade of the match with given index (the color is an indicator
* of the distance). The matches should be sorted with smallest distance first.
* @param matches - The sorted keypoints.
* @param index - Index of the keypoint.
* @param colors - The colors from which to pick (sorted from brightest to darkest).
* @returns The color the keypoint should have.
*/
export function getMatchColor(matches, index, colors) {
const maxDistance = matches.at(-1).distance;
const minDistance = matches[0].distance;
if (minDistance === maxDistance) {
return colors[0];
}
const distance = matches[index].distance;
const colorIndex = Math.floor(((colors.length - 1) * (distance - minDistance)) /
(maxDistance - minDistance));
return colors[colorIndex];
}
//# sourceMappingURL=getMatchColor.js.map