ImageAnnotatorClient

ImageAnnotatorClient

Service that performs Google Cloud Vision API detection tasks over client images, such as face, landmark, logo, label, and text detection. The ImageAnnotator service returns detected entities from the images.

Constructor

new ImageAnnotatorClient(optionsopt)

Construct an instance of ImageAnnotatorClient.

Parameters:
Name Type Attributes Description
options object <optional>

The configuration object. The options accepted by the constructor are described in detail in this document. The common options are:

Properties
Name Type Attributes Description
credentials object <optional>

Credentials object.

Properties
Name Type Attributes Description
client_email string <optional>
private_key string <optional>
email string <optional>

Account email address. Required when using a .pem or .p12 keyFilename.
keyFilename string <optional>

Full path to the a .json, .pem, or .p12 key downloaded from the Google Developers Console. If you provide a path to a JSON file, the projectId option below is not necessary. NOTE: .pem and .p12 require you to specify options.email as well.
port number <optional>

The port on which to connect to the remote host.
projectId string <optional>

The project ID from the Google Developer's Console, e.g. 'grape-spaceship-123'. We will also check the environment variable GCLOUD_PROJECT for your project ID. If your app is running in an environment which supports Application Default Credentials, your project ID will be detected automatically.
apiEndpoint string <optional>

The domain name of the API remote host.
clientConfig gax.ClientConfig <optional>

Client configuration override. Follows the structure of gapicConfig.
fallback boolean <optional>

Use HTTP fallback mode. In fallback mode, a special browser-compatible transport implementation is used instead of gRPC transport. In browser context (if the window object is defined) the fallback mode is enabled automatically; set options.fallback to false if you need to override this behavior.

Members

apiEndpoint

The DNS address for this API service - same as servicePath(), exists for compatibility reasons.

port

The port for this API service.

scopes

The scopes needed to make gRPC calls for every method defined in this service.

servicePath

The DNS address for this API service.

Methods

annotateImage(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with the requested features.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
features Array.<object>

An array of the specific annotation features being requested. This should take a form such as:

    [{type: vision.types.Feature.Type.FACE_DETECTION},
    {type: vision.types.Feature.Type.WEB_DETECTION}]
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {source: {imageUri: 'gs://path/to/image.jpg'}},
  features: [],
};
client
  .annotateImage(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });

asyncBatchAnnotateFiles(request, optionsopt) → {Promise}

Run asynchronous image detection and annotation for a list of generic files, such as PDF files, which may contain multiple pages and multiple images per page. Progress and results can be retrieved through the google.longrunning.Operations interface. Operation.metadata contains OperationMetadata (metadata). Operation.response contains AsyncBatchAnnotateFilesResponse (results).

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Description
requests Array.<number>

Required. Individual async file annotation requests for this batch.
parent string

Optional. Target project and location to make a call.

Format: projects/{project-id}/locations/{location-id}.

If no parent is specified, a region will be chosen automatically.

Supported location-ids: us: USA country only, asia: East asia areas, like Japan, Taiwan, eu: The European Union.

Example: projects/project-A/locations/eu.
options object <optional>

Call options. See CallOptions for more details.
Returns:
Type Description
Promise
  • The promise which resolves to an array. The first element of the array is an object representing a long running operation. Its promise() method returns a promise you can await for. Please see the documentation for more details and examples.
Example
const [operation] = await client.asyncBatchAnnotateFiles(request);
const [response] = await operation.promise();

asyncBatchAnnotateImages(request, optionsopt) → {Promise}

Run asynchronous image detection and annotation for a list of images.

Progress and results can be retrieved through the google.longrunning.Operations interface. Operation.metadata contains OperationMetadata (metadata). Operation.response contains AsyncBatchAnnotateImagesResponse (results).

This service will write image annotation outputs to json files in customer GCS bucket, each json file containing BatchAnnotateImagesResponse proto.

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Description
requests Array.<number>

Required. Individual image annotation requests for this batch.
outputConfig google.cloud.vision.v1.OutputConfig

Required. The desired output location and metadata (e.g. format).
parent string

Optional. Target project and location to make a call.

Format: projects/{project-id}/locations/{location-id}.

If no parent is specified, a region will be chosen automatically.

Supported location-ids: us: USA country only, asia: East asia areas, like Japan, Taiwan, eu: The European Union.

Example: projects/project-A/locations/eu.
options object <optional>

Call options. See CallOptions for more details.
Returns:
Type Description
Promise
  • The promise which resolves to an array. The first element of the array is an object representing a long running operation. Its promise() method returns a promise you can await for. Please see the documentation for more details and examples.
Example
const [operation] = await client.asyncBatchAnnotateImages(request);
const [response] = await operation.promise();

batchAnnotateFiles(request, optionsopt) → {Promise}

Service that performs image detection and annotation for a batch of files. Now only "application/pdf", "image/tiff" and "image/gif" are supported.

This service will extract at most 5 (customers can specify which 5 in AnnotateFileRequest.pages) frames (gif) or pages (pdf or tiff) from each file provided and perform detection and annotation for each image extracted.

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Description
requests Array.<number>

Required. The list of file annotation requests. Right now we support only one AnnotateFileRequest in BatchAnnotateFilesRequest.
parent string

Optional. Target project and location to make a call.

Format: projects/{project-id}/locations/{location-id}.

If no parent is specified, a region will be chosen automatically.

Supported location-ids: us: USA country only, asia: East asia areas, like Japan, Taiwan, eu: The European Union.

Example: projects/project-A/locations/eu.
options object <optional>

Call options. See CallOptions for more details.
Returns:
Type Description
Promise
Example
const [response] = await client.batchAnnotateFiles(request);

batchAnnotateImages(request, optionsopt) → {Promise}

Run image detection and annotation for a batch of images.

Parameters:
Name Type Attributes Description
request Object

The request object that will be sent.

Properties
Name Type Description
requests Array.<number>

Required. Individual image annotation requests for this batch.
parent string

Optional. Target project and location to make a call.

Format: projects/{project-id}/locations/{location-id}.

If no parent is specified, a region will be chosen automatically.

Supported location-ids: us: USA country only, asia: East asia areas, like Japan, Taiwan, eu: The European Union.

Example: projects/project-A/locations/eu.
options object <optional>

Call options. See CallOptions for more details.
Returns:
Type Description
Promise
Example
const [response] = await client.batchAnnotateImages(request);

(async) checkAsyncBatchAnnotateFilesProgress(name) → {Promise}

Check the status of the long running operation returned by asyncBatchAnnotateFiles().

Parameters:
Name Type Description
name String

The operation name that will be passed.
Returns:
Type Description
Promise
  • The promise which resolves to an object. The decoded operation object has result and metadata field to get information from. Please see the documentation for more details and examples.
Example
const decodedOperation = await checkAsyncBatchAnnotateFilesProgress(name);
console.log(decodedOperation.result);
console.log(decodedOperation.done);
console.log(decodedOperation.metadata);

(async) checkAsyncBatchAnnotateImagesProgress(name) → {Promise}

Check the status of the long running operation returned by asyncBatchAnnotateImages().

Parameters:
Name Type Description
name String

The operation name that will be passed.
Returns:
Type Description
Promise
  • The promise which resolves to an object. The decoded operation object has result and metadata field to get information from. Please see the documentation for more details and examples.
Example
const decodedOperation = await checkAsyncBatchAnnotateImagesProgress(name);
console.log(decodedOperation.result);
console.log(decodedOperation.done);
console.log(decodedOperation.metadata);

close() → {Promise}

Terminate the gRPC channel and close the client.

The client will no longer be usable and all future behavior is undefined.

Returns:
Type Description
Promise

A promise that resolves when the client is closed.

cropHints(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with crop hints.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {
    source: {imageUri: 'gs://path/to/image.jpg'}
  }
};

client
  .cropHints(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });

documentTextDetection(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with document text detection.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {
    source: {imageUri: 'gs://path/to/image.jpg'}
  }
};

client
  .documentTextDetection(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });

faceDetection(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with face detection.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {
    source: {imageUri: 'gs://path/to/image.jpg'}
  }
};

client
  .faceDetection(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });

getProjectId() → {Promise}

Return the project ID used by this class.

Returns:
Type Description
Promise

A promise that resolves to string containing the project ID.

imageProperties(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with image properties.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {
    source: {imageUri: 'gs://path/to/image.jpg'}
  }
};

client
  .imageProperties(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });

initialize() → {Promise}

Initialize the client. Performs asynchronous operations (such as authentication) and prepares the client. This function will be called automatically when any class method is called for the first time, but if you need to initialize it before calling an actual method, feel free to call initialize() directly.

You can await on this method if you want to make sure the client is initialized.

Returns:
Type Description
Promise

A promise that resolves to an authenticated service stub.

labelDetection(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with label detection.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {
    source: {imageUri: 'gs://path/to/image.jpg'}
  }
};

client
  .labelDetection(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });

landmarkDetection(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with landmark detection.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {
    source: {imageUri: 'gs://path/to/image.jpg'}
  }
};

client
  .landmarkDetection(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });

logoDetection(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with logo detection.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {
    source: {imageUri: 'gs://path/to/image.jpg'}
  }
};

client
  .logoDetection(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });

matchLocationFromProductName(productName) → {string}

Parse the location from Product resource.

Parameters:
Name Type Description
productName string

A fully-qualified path representing Product resource.
Returns:
Type Description
string

A string representing the location.

matchLocationFromProductSetName(productSetName) → {string}

Parse the location from ProductSet resource.

Parameters:
Name Type Description
productSetName string

A fully-qualified path representing ProductSet resource.
Returns:
Type Description
string

A string representing the location.

matchLocationFromReferenceImageName(referenceImageName) → {string}

Parse the location from ReferenceImage resource.

Parameters:
Name Type Description
referenceImageName string

A fully-qualified path representing ReferenceImage resource.
Returns:
Type Description
string

A string representing the location.

matchProductFromProductName(productName) → {string}

Parse the product from Product resource.

Parameters:
Name Type Description
productName string

A fully-qualified path representing Product resource.
Returns:
Type Description
string

A string representing the product.

matchProductFromReferenceImageName(referenceImageName) → {string}

Parse the product from ReferenceImage resource.

Parameters:
Name Type Description
referenceImageName string

A fully-qualified path representing ReferenceImage resource.
Returns:
Type Description
string

A string representing the product.

matchProductSetFromProductSetName(productSetName) → {string}

Parse the product_set from ProductSet resource.

Parameters:
Name Type Description
productSetName string

A fully-qualified path representing ProductSet resource.
Returns:
Type Description
string

A string representing the product_set.

matchProjectFromProductName(productName) → {string}

Parse the project from Product resource.

Parameters:
Name Type Description
productName string

A fully-qualified path representing Product resource.
Returns:
Type Description
string

A string representing the project.

matchProjectFromProductSetName(productSetName) → {string}

Parse the project from ProductSet resource.

Parameters:
Name Type Description
productSetName string

A fully-qualified path representing ProductSet resource.
Returns:
Type Description
string

A string representing the project.

matchProjectFromReferenceImageName(referenceImageName) → {string}

Parse the project from ReferenceImage resource.

Parameters:
Name Type Description
referenceImageName string

A fully-qualified path representing ReferenceImage resource.
Returns:
Type Description
string

A string representing the project.

matchReferenceImageFromReferenceImageName(referenceImageName) → {string}

Parse the reference_image from ReferenceImage resource.

Parameters:
Name Type Description
referenceImageName string

A fully-qualified path representing ReferenceImage resource.
Returns:
Type Description
string

A string representing the reference_image.

productPath(project, location, product) → {string}

Return a fully-qualified product resource name string.

Parameters:
Name Type Description
project string
location string
product string
Returns:
Type Description
string

Resource name string.

productSetPath(project, location, product_set) → {string}

Return a fully-qualified productSet resource name string.

Parameters:
Name Type Description
project string
location string
product_set string
Returns:
Type Description
string

Resource name string.

referenceImagePath(project, location, product, reference_image) → {string}

Return a fully-qualified referenceImage resource name string.

Parameters:
Name Type Description
project string
location string
product string
reference_image string
Returns:
Type Description
string

Resource name string.

safeSearchDetection(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with safe search detection.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {
    source: {imageUri: 'gs://path/to/image.jpg'}
  }
};

client
  .safeSearchDetection(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });

textDetection(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with text detection.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {
    source: {imageUri: 'gs://path/to/image.jpg'}
  }
};

client
  .textDetection(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });

webDetection(request, callOptionsopt, callbackopt) → {Promise}

Annotate a single image with web detection.

Parameters:
Name Type Attributes Description
request object | string | Buffer

A representation of the request being sent to the Vision API. This is an AnnotateImageRequest. For simple cases, you may also send a string (the URL or filename of the image) or a buffer (the image itself).

Properties
Name Type Description
image object

A dictionary-like object representing the image. This should have a single key (source, content).

If the key is `source`, the value should be another object containing
`imageUri` or `filename` as a key and a string as a value.

If the key is `content`, the value should be a Buffer.
callOptions object <optional>

Optional parameters. You can override the default settings for this call, e.g, timeout, retries, paginations, etc. See gax.CallOptions for the details.
callback function <optional>

The function which will be called with the result of the API call.

The second parameter to the callback is an object representing
BatchAnnotateImagesResponse.
Returns:
Type Description
Promise

The promise which resolves to an array. The first element of the array is an object representing BatchAnnotateImagesResponse. The promise has a method named "cancel" which cancels the ongoing API call.
See:
Example
const vision = require('@google-cloud/vision');
const client = new vision.ImageAnnotatorClient();

const request = {
  image: {
    source: {imageUri: 'gs://path/to/image.jpg'}
  }
};

client
  .webDetection(request)
  .then(response => {
    // doThingsWith(response);
  })
  .catch(err => {
    console.error(err);
  });