Oficina de Computacao Cognitiva/Visual Recognition IBM Watson

Para reconhecimento de imagem:

Dentro do IBM Bluemix:

Criar um app de Visual Recognition

Clique em Service Credentials View Credentials

{

 "url": "https://gateway-a.watsonplatform.net/visual-recognition/api",
 "note": "It may take up to 5 minutes for this key to become active",
 "api_key": "9e27a30f3c6e32e42cd6cbbacf5006451c333efx"

}

No Terminal de comando, no linux:

Para instalar:

$ npm install watson-developer-cloud --save

Comandos para Classificacao de imagem:

$ image_url=http://r.ddmcdn.com/s_f/o_1/APL/uploads/2015/07/cecil-AP463227356214-1000x400.jpg

$ api_key=9e27a30f3c6e32e42cd6cbbacf5006451c333efx

$ curl -X GET "https://gateway-a.watsonplatform.net/visual-recognition/api/v3/classify?api_key=${api_key}&version=2016-05-20&url=${image_url}"

Resultado:

Comandos para reconhecimento de imagem:

$ image_url=http://hypescience.com/wp-content/uploads/2016/07/obama.jpg

$ api_key=9e27a30f3c6e32e42cd6cbbacf5006451c333efx

$ curl -X GET "https://gateway-a.watsonplatform.net/visual-recognition/api/v3/detect_faces?api_key=${api_key}&version=2016-05-20&url=${image_url}"

Resultado:

Para trabalhar no NodeRed com reconhecimento de imagem, classificacao ou deteccao de texto, inicie um novo app no Watson IoT Platform e associe ele ao Visual Recognition do Watson.

Crie o seguinte aplicativo em Node Red:

Para cria-lo de forma rapida, copie e cole o JSON abaixo na sessao import -> clipboard.

[

   {
       "id": "dba7f7ca.9b6f58",
       "type": "tab",
       "label": "Flow 1"
   },
   {
       "id": "a9bb9560.630f5",
       "type": "ibmiot",
       "z": "",
       "name": "",
       "keepalive": "60",
       "domain": "",
       "cleansession": true,
       "appId": "",
       "shared": false
   },
   {
       "id": "d7501fec.f671",
       "type": "ibmiot",
       "z": "",
       "name": "",
       "keepalive": "60",
       "domain": "",
       "cleansession": true,
       "appId": "",
       "shared": false
   },
   {
       "id": "53a902f7.0483e4",
       "type": "ibmiot",
       "z": "",
       "name": "iot-lhc",
       "keepalive": "60",
       "domain": "",
       "cleansession": true,
       "appId": "",
       "shared": false
   },
   {
       "id": "997d054e.50b3",
       "type": "inject",
       "z": "dba7f7ca.9b6f58",
       "name": "URL",
       "topic": "",
       "payload": "http://r.ddmcdn.com/s_f/o_1/cx_633/cy_0/cw_1725/ch_1725/w_720/APL/uploads/2014/11/too-cute-doggone-it-video-playlist.jpg",
       "payloadType": "str",
       "repeat": "",
       "crontab": "",
       "once": false,
       "x": 383.5,
       "y": 105.5,
       "wires": [
           [
               "1f0ef5e5.bbc442"
           ]
       ]
   },
   {
       "id": "1f0ef5e5.bbc442",
       "type": "visual-recognition-v3",
       "z": "dba7f7ca.9b6f58",
       "name": "Classify an image",
       "apikey": "__PWRD__",
       "image-feature": "classifyImage",
       "lang": "en",
       "x": 777.5,
       "y": 104.5,
       "wires": [
           [
               "e817c082.941738"
           ]
       ]
   },
   {
       "id": "dcc39aab.4a483",
       "type": "inject",
       "z": "dba7f7ca.9b6f58",
       "name": "URL",
       "topic": "",
       "payload": "https://sd.keepcalm-o-matic.co.uk/i-w600/too-much-love-will-kill-you-everytime.jpg",
       "payloadType": "str",
       "repeat": "",
       "crontab": "",
       "once": false,
       "x": 383,
       "y": 187.5,
       "wires": [
           [
               "b062078e.4eb698"
           ]
       ]
   },
   {
       "id": "b062078e.4eb698",
       "type": "visual-recognition-v3",
       "z": "dba7f7ca.9b6f58",
       "name": "Recognize Text",
       "apikey": "__PWRD__",
       "image-feature": "recognizeText",
       "x": 788,
       "y": 186.5,
       "wires": [
           [
               "e817c082.941738"
           ]
       ]
   },
   {
       "id": "3eeb983b.ffbf1",
       "type": "visual-recognition-v3",
       "z": "dba7f7ca.9b6f58",
       "name": "Detect Faces",
       "apikey": "__PWRD__",
       "image-feature": "detectFaces",
       "x": 769.5,
       "y": 294.5,
       "wires": [
           [
               "e817c082.941738"
           ]
       ]
   },
   {
       "id": "4c738167.7a20a8",
       "type": "inject",
       "z": "dba7f7ca.9b6f58",
       "name": "URL",
       "topic": "",
       "payload": "http://hypescience.com/wp-content/uploads/2016/07/obama.jpg",
       "payloadType": "str",
       "repeat": "",
       "crontab": "",
       "once": false,
       "x": 386,
       "y": 294.5,
       "wires": [
           [
               "3eeb983b.ffbf1"
           ]
       ]
   },
   {
       "id": "e817c082.941738",
       "type": "debug",
       "z": "dba7f7ca.9b6f58",
       "name": "",
       "active": true,
       "console": "false",
       "complete": "result",
       "x": 1087.5,
       "y": 150.5,
       "wires": []
   }

]

As imagens utilizadas para o teste foram:

[1] Arquivo:Too-cute-doggone-it-video-playlist.jpg O resultado foi o seguinte: