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tensorflow.js
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var jimp = require('jimp');
var streamBuffers = require('stream-buffers');
var pureimage = require('pureimage');
var tf = require('@tensorflow/tfjs-node');
var cocossd = require('@tensorflow-models/coco-ssd');
var handpose = require('@tensorflow-models/handpose');
var mobilenet = require('@tensorflow-models/mobilenet');
var posenet = require('@tensorflow-models/posenet');
module.exports = function (RED) {
tf.setBackend('cpu');
RED.httpAdmin.get("/models/:dir/:name", function (req, res) {
var options = { root: __dirname + '/models/' + req.params.dir, dotfiles: 'deny' };
res.sendFile(req.params.name, options);
});
function CocossdNode(config) {
RED.nodes.createNode(this, config);
var node = this;
var modelCocossd;
setTimeout(function () {
node.status({ fill: "green", shape: 'ring', text: 'loading model...' });
cocossd.load({
modelUrl: 'http://localhost:' + RED.settings.uiPort + '/models/coco-ssd/model.json'
}).then(function (model) {
modelCocossd = model;
node.status({ fill: "green", shape: 'ring', text: 'model loaded' });
}).catch(function (error) {
cocossd.load().then(function (model2) {
modelCocossd = model2;
node.status({ fill: "green", shape: 'ring', text: 'model loaded' });
}).catch(function (error2) {
node.error(error);
node.error(error2);
node.status({ fill: 'red', shape: 'ring', text: 'fail to load model' });
});
});
}, 1000);
node.on('input', function (msg) {
node.status({ fill: "green", shape: 'dot', text: 'analyzing...' });
jimp.read(msg.payload).then(function (data) {
return data.getBufferAsync(jimp.MIME_PNG);
}).then(function (buffer) {
var rsb = new streamBuffers.ReadableStreamBuffer();
rsb.put(buffer);
pureimage.decodePNGFromStream(rsb).then(function (image) {
var cv = pureimage.make(image.width, image.height);
cv.getContext('2d').drawImage(image, 0, 0);
if (modelCocossd) {
modelCocossd.detect(cv).then(function (result) {
msg.details = result;
if (0 < result.length) {
msg.payload = result[0].class
var cv2 = pureimage.make(image.width, image.height);
var ctx = cv2.getContext('2d');
ctx.drawImage(image, 0, 0);
ctx.strokeStyle = 'rgb(255, 111, 0)';
ctx.strokeRect(result[0].bbox[0], result[0].bbox[1], result[0].bbox[2], result[0].bbox[3]);
ctx.fillStyle = 'rgba(255, 111, 0, 0.5)';
ctx.fillRect(result[0].bbox[0], result[0].bbox[1], result[0].bbox[2], result[0].bbox[3]);
var wsb = new streamBuffers.WritableStreamBuffer({ initialSize: 1, incrementAmount: 1 });
pureimage.encodePNGToStream(cv2, wsb).then(function () {
msg.annotatedInput = wsb.getContents();
node.send(msg);
node.status({});
}).catch(function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: error });
});
} else {
msg.annotatedInput = msg.payload;
msg.payload = null;
node.send(msg);
node.status({});
}
}, function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: 'error' });
});
} else {
node.status({ fill: 'red', shape: 'ring', text: 'model is not loaded' });
}
});
}).catch(function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: 'error' });
});
});
}
RED.nodes.registerType("cocossd", CocossdNode);
function HandposeNode(config) {
RED.nodes.createNode(this, config);
var node = this;
var modelHandpose;
setTimeout(function () {
node.status({ fill: "green", shape: 'ring', text: 'loading model...' });
handpose.load().then(function (model) {
modelHandpose = model;
node.status({ fill: "green", shape: 'ring', text: 'model loaded' });
}).catch(function (error) {
node.error(error);
node.status({ fill: 'red', shape: 'ring', text: 'fail to load model' });
});
}, 1000);
node.on('input', function (msg) {
node.status({ fill: "green", shape: 'dot', text: 'analyzing...' });
jimp.read(msg.payload).then(function (data) {
return data.getBufferAsync(jimp.MIME_PNG);
}).then(function (buffer) {
var rsb = new streamBuffers.ReadableStreamBuffer();
rsb.put(buffer);
pureimage.decodePNGFromStream(rsb).then(function (image) {
var cv = pureimage.make(image.width, image.height);
cv.getContext('2d').drawImage(image, 0, 0);
if (modelHandpose) {
modelHandpose.estimateHands(cv).then(function (result) {
msg.details = result;
var position = {};
if (0 < result.length) {
position['palmBase'] = { x: result[0].landmarks[0][0],
y: result[0].landmarks[0][1] };
position['thumb'] = { x: result[0].landmarks[4][0],
y: result[0].landmarks[4][1] };
position['indexFinger'] = { x: result[0].landmarks[8][0],
y: result[0].landmarks[8][1] };
position['middleFinger'] = { x: result[0].landmarks[12][0],
y: result[0].landmarks[12][1] };
position['ringFinger'] = { x: result[0].landmarks[16][0],
y: result[0].landmarks[16][1] };
position['pinky'] = { x: result[0].landmarks[20][0],
y: result[0].landmarks[20][1] };
}
if (0 < Object.keys(position).length) {
msg.payload = position;
var cv2 = pureimage.make(image.width, image.height);
var ctx = cv2.getContext('2d');
ctx.drawImage(image, 0, 0);
ctx.strokeStyle = 'rgb(255, 111, 0)';
ctx.lineWidth = 6;
try { ctx.drawLine({ start: position.palmBase, end: position.thumb }); } catch (e) {}
try { ctx.drawLine({ start: position.palmBase, end: position.indexFinger }); } catch (e) {}
try { ctx.drawLine({ start: position.palmBase, end: position.middleFinger }); } catch (e) {}
try { ctx.drawLine({ start: position.palmBase, end: position.ringFinger }); } catch (e) {}
try { ctx.drawLine({ start: position.palmBase, end: position.pinky }); } catch (e) {}
var wsb = new streamBuffers.WritableStreamBuffer({ initialSize: 1, incrementAmount: 1 });
pureimage.encodePNGToStream(cv2, wsb).then(function () {
msg.annotatedInput = wsb.getContents();
node.send(msg);
node.status({});
}).catch(function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: error });
});
} else {
msg.annotatedInput = msg.payload;
msg.payload = null;
node.send(msg);
node.status({});
}
}, function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: 'error' });
});
} else {
node.status({ fill: 'red', shape: 'ring', text: 'model is not loaded' });
}
});
}).catch(function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: 'error' });
});
});
}
RED.nodes.registerType("handpose", HandposeNode);
function MobilenetNode(config) {
RED.nodes.createNode(this, config);
var node = this;
var modelMobilenet;
setTimeout(function () {
node.status({ fill: "green", shape: 'ring', text: 'loading model...' });
mobilenet.load({
version: 1,
alpha: 1.0,
modelUrl: 'http://localhost:' + RED.settings.uiPort + '/models/mobilenet/model.json',
inputRange: [0, 1]
}).then(function (model) {
modelMobilenet = model;
node.status({ fill: "green", shape: 'ring', text: 'model loaded' });
}).catch(function (error) {
mobilenet.load().then(function (model2) {
modelMobilenet = model2;
node.status({ fill: "green", shape: 'ring', text: 'model loaded' });
}).catch(function (error2) {
node.error(error);
node.error(error2);
node.status({ fill: 'red', shape: 'ring', text: 'fail to load model' });
});
});
}, 1000);
node.on('input', function (msg) {
node.status({ fill: "green", shape: 'dot', text: 'analyzing...' });
jimp.read(msg.payload).then(function (data) {
return data.getBufferAsync(jimp.MIME_PNG);
}).then(function (buffer) {
var rsb = new streamBuffers.ReadableStreamBuffer();
rsb.put(buffer);
pureimage.decodePNGFromStream(rsb).then(function (image) {
var cv = pureimage.make(image.width, image.height);
cv.getContext('2d').drawImage(image, 0, 0);
if (modelMobilenet) {
modelMobilenet.classify(cv).then(function (result) {
if (result && 0 < result.length && result[0].className) {
msg.payload = result[0].className.split(', ');
} else {
msg.payload = null;
}
msg.details = result;
node.send(msg);
node.status({});
}, function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: 'error' });
});
} else {
node.status({ fill: 'red', shape: 'ring', text: 'model is not loaded' });
}
});
}).catch(function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: 'error' });
});
});
}
RED.nodes.registerType("mobilenet", MobilenetNode);
function PosenetNode(config) {
RED.nodes.createNode(this, config);
var node = this;
var modelPosenet;
setTimeout(function () {
node.status({ fill: "green", shape: 'ring', text: 'loading model...' });
posenet.load({
modelUrl: 'http://localhost:' + RED.settings.uiPort + '/models/posenet/model-stride16.json'
}).then(function (model) {
modelPosenet = model;
node.status({ fill: "green", shape: 'ring', text: 'model loaded' });
}).catch(function (error) {
posenet.load().then(function (model2) {
modelPosenet = model2;
node.status({ fill: "green", shape: 'ring', text: 'model loaded' });
}).catch(function (error2) {
node.error(error);
node.error(error2);
node.status({ fill: 'red', shape: 'ring', text: 'fail to load model' });
});
});
}, 1000);
node.on('input', function (msg) {
node.status({ fill: "green", shape: 'dot', text: 'analyzing...' });
jimp.read(msg.payload).then(function (data) {
return data.getBufferAsync(jimp.MIME_PNG);
}).then(function (buffer) {
var rsb = new streamBuffers.ReadableStreamBuffer();
rsb.put(buffer);
pureimage.decodePNGFromStream(rsb).then(function (image) {
var cv = pureimage.make(image.width, image.height);
cv.getContext('2d').drawImage(image, 0, 0);
if (modelPosenet) {
modelPosenet.estimateSinglePose(cv).then(function (result) {
msg.details = result;
var position = {};
for (var i = 0; i < result.keypoints.length; i++) {
if (result.keypoints[i].score > 0.6) {
position[result.keypoints[i].part] = result.keypoints[i].position;
}
}
if (position.leftShoulder && position.rightShoulder) {
position['center'] = { x: (position.leftShoulder.x + position.rightShoulder.x)/2,
y: (position.leftShoulder.y + position.rightShoulder.y)/2 };
}
if (0 < Object.keys(position).length) {
msg.payload = position;
var cv2 = pureimage.make(image.width, image.height);
var ctx = cv2.getContext('2d');
ctx.drawImage(image, 0, 0);
ctx.strokeStyle = 'rgb(255, 111, 0)';
ctx.lineWidth = 10;
try { ctx.drawLine({ start: position.nose, end: position.leftEye }); } catch (e) {}
try { ctx.drawLine({ start: position.leftEye, end: position.leftEar }); } catch (e) {}
try { ctx.drawLine({ start: position.nose, end: position.rightEye }); } catch (e) {}
try { ctx.drawLine({ start: position.rightEye, end: position.rightEar }); } catch (e) {}
try { ctx.drawLine({ start: position.nose, end: position.center }); } catch (e) {}
try { ctx.drawLine({ start: position.leftShoulder, end: position.rightShoulder }); } catch (e) {}
try { ctx.drawLine({ start: position.leftShoulder, end: position.leftElbow }); } catch (e) {}
try { ctx.drawLine({ start: position.leftElbow, end: position.leftWrist }); } catch (e) {}
try { ctx.drawLine({ start: position.rightShoulder, end: position.rightElbow }); } catch (e) {}
try { ctx.drawLine({ start: position.rightElbow, end: position.rightWrist }); } catch (e) {}
try { ctx.drawLine({ start: position.center, end: position.leftHip }); } catch (e) {}
try { ctx.drawLine({ start: position.leftHip, end: position.leftKnee }); } catch (e) {}
try { ctx.drawLine({ start: position.leftKnee, end: position.leftAnkle }); } catch (e) {}
try { ctx.drawLine({ start: position.center, end: position.rightHip }); } catch (e) {}
try { ctx.drawLine({ start: position.rightHip, end: position.rightKnee }); } catch (e) {}
try { ctx.drawLine({ start: position.rightKnee, end: position.rightAnkle }); } catch (e) {}
var wsb = new streamBuffers.WritableStreamBuffer({ initialSize: 1, incrementAmount: 1 });
pureimage.encodePNGToStream(cv2, wsb).then(function () {
msg.annotatedInput = wsb.getContents();
node.send(msg);
node.status({});
}).catch(function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: error });
});
} else {
msg.annotatedInput = msg.payload;
msg.payload = null;
node.send(msg);
node.status({});
}
}, function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: 'error' });
});
} else {
node.status({ fill: 'red', shape: 'ring', text: 'model is not loaded' });
}
});
}).catch(function (error) {
node.error(error, msg);
node.status({ fill: 'red', shape: 'ring', text: 'error' });
});
});
}
RED.nodes.registerType("posenet", PosenetNode);
};