Node.js client for the Vuforia Web Services API (VWS API) and the Vuforia Web Query API (VWQ API)
npm install vuforia-apijavascript
// load module
var vuforia = require('vuforia-api');// init client with valid credentials
var client = vuforia.client({
// Server access key (used for Vuforia Web Services API)
'serverAccessKey': 'your server access key',
// Server secret key (used for Vuforia Web Services API)
'serverSecretKey': 'your server secret key',
// Client access key (used for Vuforia Web Query API)
'clientAccessKey': 'your client access key',
// Client secret key (used for Vuforia Web Query API)
'clientSecretKey': 'your client secret key'
});
// util for base64 encoding and decoding
var util = vuforia.util();
`create a new target
javascript
var target = { // name of the target, unique within a database
'name': 'my target',
// width of the target in scene unit
'width': 32.0,
// the base64 encoded binary recognition image data
'image': util.encodeFileBase64(__dirname + '/someImage.png'),
// indicates whether or not the target is active for query
'active_flag': true,
// the base64 encoded application metadata associated with the target
'application_metadata': util.encodeBase64('some metadata about your image')
};
`add target to cloud database
javascript
client.addTarget(target, function (error, result) { if (error) { // e.g. [Error: AuthenticationFailure]
console.error(result);
/*
example of result from the vws API:
{
result_code: 'AuthenticationFailure',
transaction_id: '58b51ddc7a2c4ac58d405027acf5f99a'
}
*/
} else {
console.log(result);
/*
example of result from the vws API:
{
target_id: '93fd6681f1r74b76bg80tf736a11b6a9',
result_code: 'TargetCreated',
transaction_id: 'xf157g63179641c4920728f1650d1626'
}
*/
}
});
`list all targets within cloud database
javascript
client.listTargets(function (error, result) { if (error) { // e.g. [Error: AuthenticationFailure]
console.error(result);
/*
example of result from the vws API:
{
result_code: 'AuthenticationFailure',
transaction_id: '58b51ddc7a2c4ac58d405027acf5f99a'
}
*/
} else {
console.log(result);
/*
example of result from the vws API:
{
“result_code”:”Success”,
“transaction_id”:”550e8400e29440000b41d4a716446655”,
“results”:[
”00550e84e29b41d4a71644665555678”,
”578fe7fd60055a5a84c2d215066b7a9d”
]
}
*/
}
});
`
retrieve a target from cloud database
javascript
client.retrieveTarget('00550e84e29b41d4a71644665555678', function (error, result) { if (error) { // e.g. [Error: AuthenticationFailure]
console.error(result);
/*
example of result from the vws API:
{
result_code: 'AuthenticationFailure',
transaction_id: '58b51ddc7a2c4ac58d405027acf5f99a'
}
*/
} else {
console.log(result);
/*
example of result from the vws API:
{
“result_code”:”Success”,
“transaction_id”:”e29b41550e8400d4a716446655440000”,
“target_record”:{
“target_id”:”550b41d4a7164466554e8400e2949364”,
“active_flag”:true,
“name”:”tarmac”,
“width”:100.0,
“tracking_rating”:4,
“reco_rating”:””
},
“status”:”Success”
}
*/
}
});
`update a target
javascript
var update = { 'active_flag' : true,
'application_metadata' : util.encodeBase64('Some metadata about your image')
};
client.updateTarget('00550e84e29b41d4a71644665555678', update, function (error, result) {
if (error) { // e.g. [Error: AuthenticationFailure]
console.error(result);
/*
example of result from the vws API:
{
result_code: 'AuthenticationFailure',
transaction_id: '58b51ddc7a2c4ac58d405027acf5f99a'
}
*/
} else {
console.log(result);
/*
example of result from the vws API:
{
"result_code":"Success",
"transaction_id":"550e8400e29b41d4a716446655482752"
}
*/
}
});
`delete a target
javascript
client.deleteTarget('00550e84e29b41d4a71644665555678', function (error, result) { if (error) { // e.g. [Error: AuthenticationFailure]
console.error(result);
/*
example of result from the vws API:
{
result_code: 'AuthenticationFailure',
transaction_id: '58b51ddc7a2c4ac58d405027acf5f99a'
}
*/
} else {
console.log(result);
/*
example of result from the vws API:
{
“result_code”:”Success”,
“transaction_id”:”550e8400e29b41d4a716446655482752”
}
*/
}
});
`
search cloud database for images that can be considered duplicates
javascript
client.checkForDuplicateTargets('00550e84e29b41d4a71644665555678', function (error, result) { // images that are the same as the reference one identified by a given target id
if (error) { // e.g. [Error: AuthenticationFailure]
console.error(result);
/*
example of result from the vws API:
{
result_code: 'AuthenticationFailure',
transaction_id: '58b51ddc7a2c4ac58d405027acf5f99a'
}
*/
} else {
console.log(result);
/*
example of result from the vws API:
{
“similar_targets”:
[
”550e8400e29b41d4a716446655447300”,
”578fe7fd60055cbc84c2d215066b7a9d”
]
}
*/
}
});
`Perform an Image Recognition Query
javascript
var filename = __dirname + '/test.jpg'; // image file that will be send to the Vuforia Web Query API
var max_num_results = 5; // return only 5 matchesclient.cloudRecoQuery(fs.readFileSync(filename, 'binary'), max_num_results, function (error, result) {
if (error) { // e.g. [Error: AuthenticationFailure]
console.error(result);
/*
example of result from the vwq API:
{
result_code: 'AuthenticationFailure',
transaction_id: '58b51ddc7a2c4ac58d405027acf5f99a'
}
*/
} else {
console.log(result);
/*
example of result from the vwq API:
{
result_code: 'Success',
transaction_id: 'b66bef31ba394c86a7ea2ab7e35c93d1',
results:
[
'eacbb1487c584dbb8741fb5a28b4228f'
]
}
*/
}
});
``