Slow in nodejs project

Hello!

I am trying to setup simple face detection in nodejs env. Out of the box everything run fine with the exception of speed. It takes 12+ seconds for a single face detection.

require('@tensorflow/tfjs-node')

is included!

On execution i see:

cpu backend was already registered. Reusing existing backend

then

Hi there 👋. Looks like you are running TensorFlow.js in Node.js. To speed things up dramatically, install our node backend, which binds to TensorFlow C++, by running npm i @tensorflow/tfjs-node, or npm i @tensorflow/tfjs-node-gpu if you have CUDA. Then call require(‘@tensorflow/tfjs-node’); (-gpu suffix for CUDA) at the start of your program. Visit https://github.com/tensorflow/tfjs-node for more details.

When i install older versions of the two packages:

npm install @tensorflow/tfjs-node@0.3.0 face-api.js@0.14.3

there is significant speed improvement, BUT i need age and gender detection , which is not present below face-api.js < 0.20.0

I also tryed: @tensorflow/tfjs-node version 1.0.2

but then i get:

(node:29723) UnhandledPromiseRejectionWarning: TypeError: tfc.ENV.findBackend is not a function at nodeBackend (/home/pi/testproject/node_modules/@tensorflow/tfjs- node/dist/ops/op_utils.js:25:28)

How can i use age and gender recognition and get faster speed under nodejs?

Environment Raspberry Pi Node: v8.10.0 face-api.js: 0.20.0 / 0.14.3 @tensorflow/tfjs-node: 1.1.2 / 1.0.2 / 0.3.0

[justadudewhohacks]

@tensorflow/tfjs-node 1.0.2 + @tensorflow/tfjs-core 1.0.3 should work with face-api.js 0.20.0. This is the setup that the nodejs examples use. The error message you posted might indicate, that you are not using tfjs-core 1.0.3.

[0x6c23]

I’m getting following error, please help to resolve

cpu backend was already registered. Reusing existing backend factory. Platform node has already been set. Overwriting the platform with [object Object]. node-pre-gyp info This Node instance does not support builds for N-API version 4 node-pre-gyp info This Node instance does not support builds for N-API version 4 module.js:549 throw err; ^

Error: Cannot find module ‘D:\bench_work_space\GCH\face-expressions\face-expressions\facetest\node_modules@tensorflow\tfjs-node\lib\napi-v3\tfjs_binding.node’ at Function.Module._resolveFilename (module.js:547:15) at Function.Module._load (module.js:474:25) at Module.require (module.js:596:17) at require (internal/module.js:11:18) at Object. (D:\bench_work_space\GCH\face-expressions\face-expressions\facetest\node_modules@tensorflow\tfjs-node\dist\index.js:44:16) at Module._compile (module.js:652:30) at Object.Module._extensions…js (module.js:663:10) at Module.load (module.js:565:32) at tryModuleLoad (module.js:505:12) at Function.Module._load (module.js:497:3)

Same issue here. Impossible to include @tensorflow. It installs without errors. Tried many versions. Still not able to include.