opencv-nodeをっかって画像を階調反転して表示する

opencv-node_invertColorTest.js

var cv = require('opencv-node');
var path = require('path');

var fullpath = path.resolve('./lena.png');

console.log('Opening ', fullpath);

var src = cv.imread(fullpath, -1);
if(src.empty) return console.log('Error opening file');

cv.namedWindow("Original", 1);
cv.imshow("Original", src);

cv.bitwise_not(src, src);

cv.namedWindow("RGB Invert", 1);
cv.imshow("RGB Invert", src);

cv.closeOnEsc();
cv.runMessageLoop();