Huawei Cloud Image Recognition

Since Camel 3.12

Only producer is supported

Huawei Cloud Image Recognition component allows you to integrate with Image Recognition provided by Huawei Cloud.

Maven users will need to add the following dependency to their pom.xml for this component:

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-huaweicloud-imagerecognition</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>

URI format

hwcloud-imagerecognition:operation[?options]

Configuring Options

Camel components are configured on two separate levels:

  • component level

  • endpoint level

Configuring Component Options

The component level is the highest level which holds general and common configurations that are inherited by the endpoints. For example a component may have security settings, credentials for authentication, urls for network connection and so forth.

Some components only have a few options, and others may have many. Because components typically have pre configured defaults that are commonly used, then you may often only need to configure a few options on a component; or none at all.

Configuring components can be done with the Component DSL, in a configuration file (application.properties|yaml), or directly with Java code.

Configuring Endpoint Options

Where you find yourself configuring the most is on endpoints, as endpoints often have many options, which allows you to configure what you need the endpoint to do. The options are also categorized into whether the endpoint is used as consumer (from) or as a producer (to), or used for both.

Configuring endpoints is most often done directly in the endpoint URI as path and query parameters. You can also use the Endpoint DSL and DataFormat DSL as a type safe way of configuring endpoints and data formats in Java.

A good practice when configuring options is to use Property Placeholders, which allows to not hardcode urls, port numbers, sensitive information, and other settings. In other words placeholders allows to externalize the configuration from your code, and gives more flexibility and reuse.

The following two sections lists all the options, firstly for the component followed by the endpoint.

Component Options

The Huawei Cloud Image Recognition component supports 2 options, which are listed below.

Name Description Default Type

lazyStartProducer (producer)

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

boolean

autowiredEnabled (advanced)

Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc.

true

boolean

Endpoint Options

The Huawei Cloud Image Recognition endpoint is configured using URI syntax:

hwcloud-imagerecognition:operation

with the following path and query parameters:

Path Parameters (1 parameters)

Name Description Default Type

operation (producer)

Required Name of Image Recognition operation to perform, including celebrityRecognition and tagRecognition.

String

Query Parameters (17 parameters)

Name Description Default Type

accessKey (producer)

Required Access key for the cloud user.

String

endpoint (producer)

Fully qualified Image Recognition service url. Carries higher precedence than region based configuration.

String

imageContent (producer)

Indicates the Base64 character string converted from the image. The size cannot exceed 10 MB. The image resolution of the narrow sides must be greater than 15 pixels, and that of the wide sides cannot exceed 4096 pixels.The supported image formats include JPG, PNG, and BMP. Configure either this parameter or imageUrl, and this one carries higher precedence than imageUrl.

String

imageUrl (producer)

Indicates the URL of an image. The options are as follows: HTTP/HTTPS URLs on the public network OBS URLs. To use OBS data, authorization is required, including service authorization, temporary authorization, and anonymous public authorization. For details, see Configuring the Access Permission of OBS. Configure either this parameter or imageContent, and this one carries lower precedence than imageContent.

String

projectId (producer)

Required Cloud project ID.

String

proxyHost (producer)

Proxy server ip/hostname.

String

proxyPassword (producer)

Proxy authentication password.

String

proxyPort (producer)

Proxy server port.

int

proxyUser (producer)

Proxy authentication user.

String

region (producer)

Required Image Recognition service region. Currently only cn-north-1 and cn-north-4 are supported. This is lower precedence than endpoint based configuration.

String

secretKey (producer)

Required Secret key for the cloud user.

String

serviceKeys (producer)

Configuration object for cloud service authentication.

ServiceKeys

tagLanguage (producer)

Indicates the language of the returned tags when the operation is tagRecognition, including zh and en.

zh

String

tagLimit (producer)

Indicates the maximum number of the returned tags when the operation is tagRecognition.

50

int

threshold (producer)

Indicates the threshold of confidence. When the operation is tagRecognition, this parameter ranges from 0 to 100. Tags whose confidence score is lower than the threshold will not be returned. The default value is 60. When the operation is celebrityRecognition, this parameter ranges from 0 to 1. Labels whose confidence score is lower than the threshold will not be returned. The default value is 0.48.

float

lazyStartProducer (producer (advanced))

Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.

false

boolean

ignoreSslVerification (security)

Ignore SSL verification.

false

boolean

When using imageContent option, we suggest you use RAW(image_base64_value) to avoid encoding issue.

Usage

Message properties evaluated by the Image Recognition producer

Header Type Description

CamelHwCloudImageContent

String

The Base64 character string converted from the image

CamelHwCloudImageUrl

String

The URL of an image

CamelHwCloudImageTagLimit

Integer

The maximum number of the returned tags when the operation is tagRecognition

CamelHwCloudImageTagLanguage

String

The language of the returned tags when the operation is tagRecognition

CamelHwCloudImageThreshold

Integer

The threshold of confidence.

List of Supported Image Recognition Operations

  • celebrityRecognition - to analyze and identify the political figures, stars and online celebrities contained in the picture, and return the person information and face coordinates

  • tagRecognition - to recognize hundreds of scenes and thousands of objects and their properties in natural images

Inline Configuration of route

celebrityRecognition

Java DSL

from("direct:triggerRoute")
  .setProperty(ImageRecognitionProperties.IMAGE_URL, constant("https://xxxx"))
  .setProperty(ImageRecognitionProperties.THRESHOLD,constant(0.5))
  .to("hwcloud-imagerecognition:celebrityRecognition?accessKey=*********&secretKey=********&projectId=9071a38e7f6a4ba7b7bcbeb7d4ea6efc&region=cn-north-4")

XML DSL

<route>
   <from uri="direct:triggerRoute" />
   <setProperty name="CamelHwCloudImageUrl">
      <constant>https://xxxx</constant>
   </setProperty>
   <setProperty name="CamelHwCloudImageThreshold">
      <constant>0.5</constant>
   </setProperty>
   <to uri="hwcloud-imagerecognition:celebrityRecognition?accessKey=*********&amp;secretKey=********&amp;projectId=9071a38e7f6a4ba7b7bcbeb7d4ea6efc&amp;region=cn-north-4" />
</route>

tagRecognition

Java DSL

from("direct:triggerRoute")
  .setProperty(ImageRecognitionProperties.IMAGE_CONTENT, constant("/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAA0JCgsKCA0LCgsODg0PEyAVExISEyccHhcgLikxMC4pLSwzOko+MzZGNywtQFdBRkxOUlNSMj5aYVpQYEpRUk//..."))
  .setProperty(ImageRecognitionProperties.THRESHOLD,constant(60))
  .setProperty(ImageRecognitionProperties.TAG_LANGUAGE,constant("en"))
  .setProperty(ImageRecognitionProperties.TAG_LIMIT,constant(50))
  .to("hwcloud-imagerecognition:tagRecognition?accessKey=*********&secretKey=********&projectId=9071a38e7f6a4ba7b7bcbeb7d4ea6efc&region=cn-north-4")

XML DSL

<route>
    <from uri="direct:triggerRoute" />
    <setProperty name="CamelHwCloudImageContent">
        <constant>/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAA0JCgsKCA0LCgsODg0PEyAVExISEyccHhcgLikxMC4pLSwzOko+MzZGNywtQFdBRkxOUlNSMj5aYVpQYEpRUk//...</constant>
    </setProperty>
    <setProperty name="CamelHwCloudImageThreshold">
        <constant>60</constant>
    </setProperty>
    <setProperty name="CamelHwCloudImageTagLanguage">
        <constant>en</constant>
    </setProperty>
    <setProperty name="CamelHwCloudImageTagLimit">
        <constant>50</constant>
    </setProperty>
    <to uri="hwcloud-imagerecognition:tagRecognition?accessKey=*********&amp;secretKey=********&amp;projectId=9071a38e7f6a4ba7b7bcbeb7d4ea6efc&amp;region=cn-north-4" />
</route>