Content Moderation:AI-generated image identification service of Image Moderation 2.0

1. Scenarios

Alibaba Cloud Content Moderation provides the following custom moderation service for AIGC scenarios, such as text-to-image generation and image-to-image generation:

• AI-generated image identification: As technology advances, AI-generated images are becoming increasingly similar to those produced by users. You may want to identify and label images that are generated by AI. This is where the AI-generated image identification service of Alibaba Cloud Content Moderation comes in.

2. Service description

Image Moderation 2.0 provides the following service for AIGC scenarios.

3. Moderation capability

AI-generated image identification allows you to determine whether an image is generated by AI. An AIGC or user-generated content (UGC) label is returned.

4. Billing

The AI-generated image identification service of Image Moderation 2.0 supports the pay-as-you-go billing method.

Pay-as-you-go

After you activate the Image Moderation 2.0 service, the default billing method is pay-as-you-go. Daily fees are settled based on the actual usage. If the service is not called, no charge is made.

5. Usage guide

Step 1: Activate the service

Open the service activation page to activate the Image Moderation 2.0 service.

After you activate the Image Moderation 2.0 service, the default billing method is pay-as-you-go. Daily fees are settled based on the actual usage. If the service is not called, no charge is made. After you call the API, the billing system automatically charges you based on your usage. For more information, see Billing method.

Step 2: Grant permissions to a RAM user

Before you call API operations or use SDKs as a Resource Access Management (RAM) user, you must grant permissions to the RAM user. You can create an AccessKey pair for your Alibaba Cloud account and the RAM user. When you call API operations, you must use the AccessKey pair to complete identity verification. For information about how to obtain the AccessKey pair, see Obtain an AccessKey pair.

1. Log on to the RAM console by using your Alibaba Cloud account or as a RAM user that has administrative permissions.

2. Create a RAM user. For more information, see Create a RAM user.

3. Grant the AliyunYundunGreenWebFullAccess system policy to the RAM user. For more information, see Grant permissions to a RAM user. After you complete the preceding configurations, you can call the Content Moderation API as the RAM user.

Step 3: Install and use SDKs

For more information, see Image Moderation 2.0 SDKs and usage guide. The following table lists the supported regions.

6. API

Usage notes

You can call the Image Moderation 2.0 API to create a task for image moderation. For more information about how to construct an HTTP request, see Image Moderation 2.0 SDKs and usage guide. You can also select an existing HTTP request. For more information, see Image Moderation 2.0 SDKs and usage guide.

• Operation: ImageModeration

• Billing: You are charged for calling this operation. You are charged by using the pay-as-you-go billing method only for requests whose HTTP status code is 200. For more information about the billing method, see Billing method.

• Limits on images

  • The images must be in PNG, JPG, JPEG, BMP, WEBP, TIFF, SVG, HEIC (the longest side is less than 8192 pixels), GIF (extract the first frame), or ICO (extract the last layer) format.

  • The maximum size of an image is limited to 20 MB, the height or width cannot exceed 16,384 pixels, and the total pixels must not exceed 250 million pixels. We recommend that you submit images with a minimum resolution of 200 × 200 pixels to ensure that the results of Content Moderation detection algorithms are not affected.

  • The maximum download duration for an image is 3 seconds. If an image fails to be downloaded within 3 seconds, a timeout error is returned.

QPS limit

You can call this operation up to 100 times per second per account. If the number of calls per second exceeds the limit, throttling is triggered. As a result, your business may be affected. We recommend that you take note of the limit when you call this operation. If you require a higher queries per second (QPS) to meet business requirements or urgent scaling requirements, contact your customer business manager (CBM).

Debugging

Before you deploy SDKs, you can use Alibaba Cloud OpenAPI Explorer to debug the Image Moderation 2.0 API online and view the sample code for the call and SDK dependencies. This way, you can understand how to call the API and how to set related parameters.

Request parameters

For more information about the common request parameters that must be included in all Content Moderation API requests, see Image Moderation 2.0 SDKs and usage guide.

The request body is a JSON structure. The following table describes the parameters that are contained in the request body.

Table 1. ServiceParameters

Response parameters

Table 2. Data

Table 3. Result

Examples

Sample requests

{
    "Service": "aigcDetector_global",
    "ServiceParameters": {
        "imageUrl": "https://img.alicdn.com/tfs/TB1U4r9AeH2gK0jSZJnXXaT1FXa-2880-480.png",
        "dataId": "img123****"
    }
}

Sample output

{
    "Msg": "OK",
    "Code": 200,
    "Data": {
        "DataId": "img123****",
        "Result": [
            {
                "Label": "aigc",
                "Confidence": 81.88
            }
        ]
    },
    "RequestId": "ABCD1234-1234-1234-1234-1234XYZ"
}

Descriptions of risk labels

The following table describes the values of risk labels, the corresponding scores of confidence levels, and the definitions of the risk labels. You can configure each risk label in the Content Moderation console. You can also configure more specific moderation scopes for some risk labels. For more information, see Console guide.

Table 4. Labels supported by AI-generated image identification (aigcDetector_global)

Response codes

The following table describes the response codes. You are charged by using the pay-as-you-go billing method only for requests whose response code is 200.