123456789101112131415161718192021222324252627282930313233343536373839404142 |
- var lwip = require('lwip');
- var exp = {};
- // extracts the face from an image +buffer+
- // save it to a file called +outname+
- // callback has an error parameter which can be null
- exp.extract_face = function(buffer, outname, callback) {
- lwip.open(buffer, "png", function(err, image) {
- if (err) {
- callback(err);
- } else {
- image.batch()
- .crop(8, 8, 15, 15)
- .writeFile(outname, function(err) {
- if (err) {
- callback(err);
- } else {
- callback(null);
- }
- });
- }
- });
- };
- // resizes the image file +inname+ to +size+ by +size+ pixels
- // +callback+ is a buffer of the resized image
- exp.resize_img = function(inname, size, callback) {
- lwip.open(inname, function(err, image) {
- if (err) {
- callback(err, null);
- } else {
- image.batch()
- .resize(size, size, "nearest-neighbor") // nearest-neighbor doesn't blur
- .toBuffer('png', function(err, buffer) {
- callback(null, buffer);
- });
- }
- });
- };
- module.exports = exp;
|