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Single Image Moderation

Last updated: 2024-02-19 14:59:07

    Feature Description

    The image moderation API supports both sync and async GET request methods. You can use this API to perform content moderation on an image file.
    The API supports the following operations:
    Note:
    Moderate image files stored in COS.
    Moderate images at URLs of a third-party cloud storage vendor.
    Local image files can be moderated after being Base64-encoded by calling the API for batch image moderation.
    Detect image files stored in COS or at URLs and recognize non-compliant content that may be offensive, unsafe, or inappropriate based on the deep learning technology.
    Moderate GIF images by capturing frames.
    Recognize various non-compliant scenes, including vulgar, illegal, pornographic, and adverting information.
    Detect various objects (such as object, advertising logo, and QR code) and recognize text in images through OCR.
    Customize moderation policies based on different business scenarios.
    Customize risk libraries to filter non-compliant content of custom types.

    Billing Description

    Each moderation scene is billed separately. For example, if you choose to moderate two scenes involving pornography and advertising, then one image file will be moderated and billed twice.
    Calling the API will incur image moderation fees and COS read request fees as described in Request Fees.
    If the image files are stored in COS STANDARD_IA storage class, calling the moderation API will incur STANDARD_IA data retrieval fees as described in Data Retrieval Fees.
    Image moderation is not supported for objects stored in the ARCHIVE or DEEP ARCHIVE storage classes. To moderate these objects, you first need to restore them as instructed in POST Object restore.
    Moderating audios at URLs of a third-party cloud storage vendor will incur downstream traffic fees charged by the vendor.

    Restrictions

    Supported image file size: < 32 MB. To moderate images larger than 5 MB in size, you need to use the large-image-detect parameter when calling the API.
    Supported image file resolution: A resolution above 256x256 is recommended; otherwise, the recognition effect may be affected.
    Supported image formats: PNG, JPG, JPEG, BMP, GIF, WEBP.
    Supported image URL transfer protocols: HTTP, HTTPS.
    Calling the API requires a signature. For more information, see Request Signature.

    SDK Recommendation

    COS SDK provides complete capabilities of demo, automatic integration, and signature calculation. You can easily and quickly call APIs through the SDK. For more information, see SDK Overview.

    Request

    Sample request

    GET /<ObjectKey>?ci-process=sensitive-content-recognition&detect-type=<type>&detect-url=<detect-url>&interval=<interval>&max-frames=<max-frames>&biz-type=<biz-type> HTTP/1.1
    Host: <BucketName-APPID>.cos.<Region>.myqcloud.com
    Date: GMT Date
    Authorization: Auth String
    Note:
    Authorization: Auth String (for more information, see Request Signature).
    When this feature is used by a sub-account, relevant permissions must be granted. For more information, see Authorization Granularity Details.

    Request headers

    This API only uses common request headers. For more information, see Common Request Headers.

    Request parameters

    The parameters are as described below:
    Parameter
    Description
    Type
    Required
    ObjectKey
    Name of the image file in the COS bucket. The COS bucket is specified by Host. For example, if the file is img.jpg in the test directory in the examplebucket-1250000000 bucket in Beijing, then Host is examplebucket-1250000000.cos.ap-beijing.myqcloud.com, and ObjectKey is test/img.jpg.
    String
    No
    ci-process
    This field identifies the data processing feature, which is sensitive-content-recognition for content moderation.
    String
    Yes
    biz-type
    Unique identifier of the moderation policy. You can configure the scenes you want to moderate on the moderation policy page in the console, such as pornographic, adverting, and illegal information. For configuration guidelines, see Setting Moderation Policy. You can get biz-type in the console. If biz-type is specified, the moderation request will perform moderation based on the scenes configured in the moderation policy. If biz-type is not specified, the default moderation policy will be used automatically.
    String
    No
    detect-type
    The scene to be moderated, such as Porn (pornography) and Ads (advertising). This parameter will no longer be maintained in the future. You can pass in multiple types and separate them by comma, such as Porn,Ads. If you need to moderate more scenes, use the biz-type parameter.
    String
    No
    detect-url
    You can enter a detect-url value to moderate an image accessible over the public network. If detect-url is not specified, the backend will moderate by ObjectKey by default. If detect-url is specified, the backend will moderate by detect-url, and there will be no need to enter ObjectKey. Sample detect-url: http://www.example.com/abc.jpg.
    String
    No
    interval
    For GIF image moderation, you can use this parameter to configure the frame capturing interval. The default value is 5, indicating to capture a frame every five frames starting from the first frame (included).
    Int
    No
    max-frames
    The maximum number of frames to be captured for GIF image moderation, which must be greater than 0. The default value is 5, indicating to capture five frames at most.
    Int
    No
    large-image-detect
    Whether to compress the image that exceeds the size limit before moderation. Valid values: 0 (no), 1 (yes). Default value: 0. Note: Images up to 32 MB in size can be compressed, and image compression fees will be charged. For large animated images such as GIF, the compression time is long, which may cause the moderation to fail due to timeout.
    Int
    No
    dataid
    Image ID. This field will return the original content in the result, which can contain up to 512 bytes.
    String
    No
    async
    Whether to moderate asynchronously. Valid values: 0 (returns the result synchronously); 1 (moderates asynchronously). Default value: 0.
    Int
    No
    callback
    The moderation result (in Detail mode) can be sent to your callback address in the form of a callback. This parameter takes effect for async moderation. Addresses starting with http:// or https:// are supported, such as http://www.callback.com.
    String
    No
    Note:
    Moderation through ObjectKey is a private network operation and will not generate public network traffic.
    Moderation through detect-url will generate public network traffic with regard to the origin where the image resides.

    Request body

    The request body of this request is empty.

    Response

    Response headers

    This API only returns common response headers. For more information, see Common Response Headers.

    Response body

    <RecognitionResult>
          <JobId>xxxxxxxxxxxxxxx</JobId>
          <Result>1</Result>
          <Label>Porn</Label>
          <SubLabel>SexBehavior</SubLabel>
          <Score>90</Score>
          <PornInfo>
              <Code>0</Code>
              <Msg>OK</Msg>
              <HitFlag>1</HitFlag>
              <Label>xxx</Label>
              <SubLabel>SexBehavior</SubLabel>
              <Score>100</Score>
              <OcrResults>
                <Text></Text>
                <Keywords></Keywords>
                <Location>
                  <X></X>
                  <Y></Y>
                  <Width></Width>
                  <Height></Height>
                  <Rotate></Rotate>
                </Location>
              </OcrResults>
          </PornInfo>
    </RecognitionResult>
    The response body is as described below:
    Parameter
    Type
    Description
    RecognitionResult
    Container
    Image moderation result.
    Content of RecognitionResult for async moderation:
    Parameter
    Type
    Description
    DataId
    String
    Image ID. The original content will be returned in the moderation result, which can contain up to 512 bytes.
    JobId
    String
    Image moderation job ID.
    State
    String
    Status of the moderation job. Valid value: Submitted.
    Object
    String
    The name of the image stored in the COS bucket, which will be returned if ObjectKey is selected during job creation.
    Url
    String
    The URL of the image file, which will be returned if detect-url is selected during job creation.
    Content of RecognitionResult for sync moderation:
    Parameter
    Type
    Description
    DataId
    String
    Image ID. The original content will be returned in the moderation result, which can contain up to 512 bytes.
    JobId
    String
    Image moderation job ID.
    State
    String
    Status of the moderation job. Valid value: Success.
    Object
    String
    The name of the image stored in the COS bucket, which will be returned if ObjectKey is selected during job creation.
    Url
    String
    The URL of the image file, which will be returned if detect-url is selected during job creation.
    CompressionResult
    Int
    Whether the image is compressed. Valid values: 0 (no), 1 (yes).
    Result
    Int
    This field indicates the moderation result. You can perform subsequent operations based on the result. We recommend you handle different results based on your business needs. Valid values: 0 (normal), 1 (sensitive), and 2 (suspiciously sensitive, with human review recommended).
    Label
    String
    This field is used to return the maliciousness tag with the highest priority in the detection result, which represents the moderation result suggested by the model. We recommend you handle different types of violations and suggestions based on your business needs. Returned values: Normal, Porn, Ads, and other types of unsafe or inappropriate content.
    Category
    String
    This field is a subset of Label, indicating the specific moderation category hit; for example, Sexy presents the sexy category in the Porn tag.
    SubLabel
    String
    Second-level tag hit by the image.
    Score
    Int
    The confidence the moderation result hits the moderation scene. Value range: 0–100. The higher the value, the more likely the content hits the currently returned moderation scene. For example, Porn 99 means that the content is very likely to be pornographic.
    Text
    String
    The specific text content recognized by OCR in the image, which will be returned if text content detection is enabled in the moderation policy.
    PornInfo
    Container
    The moderation result of the pornographic information moderation scene.
    AdsInfo
    Container
    The moderation result of the advertising information moderation scene.
    The moderation information (PornInfo and AdsInfo) has the following sub-nodes:
    Parameter
    Type
    Description
    Code
    Int
    Error code. 0 indicates a success, while other numbers correspond to different errors. For more information, see Error Codes.
    Msg
    String
    The specific error message, which will be OK if the moderation result is normal.
    HitFlag
    Int
    The moderation result returned for the moderation scene. Returned values: 0 (normal); 1 (confirmed as a violation of the current scene); 2 (suspected as a violation of the current scene).
    Score
    Int
    The confidence the moderation result hits the moderation scene. Value range: 0–100. The higher the value, the more likely the content hits the currently returned moderation scene. A value in the range of 0–60, 61–90, or 91–100 means the image is normal, suspiciously sensitive, or sensitive respectively. For example, Porn 99 means that the content is very likely to be pornographic.
    Label
    String
    This field indicates the overall result tag of the screenshot, which may be SubLabel, a person name, etc.
    Category
    String
    This field is a subset of Label, indicating the specific moderation category hit; for example, Sexy presents the sexy category in the Porn tag.
    SubLabel
    String
    This field indicates the specific sub-tag hit by the moderation job; for example, SexBehavior is a sub-tag under the Porn tag. Note: This field may return null, indicating that no specific sub-tags are hit.
    OcrResults
    Container Array
    This field represents the detailed OCR result, including the text recognition result and hit keyword. It will be returned if there is non-compliant content.
    LibResults
    Container Array
    This field returns results based on recognition against the risk library. Note: This field will not be returned if no samples in the risk library are hit.
    LibResults has the following sub-nodes:
    Parameter
    Type
    Description
    ImageId
    String
    This field represents the hit image sample ID in the risk library.
    Score
    Integer
    This field returns the confidence under the current tag. Value range: 0–100. The higher the value, the more likely the image hits a sample in the risk library. For example, Porn 99 means that the content is very likely to hit a pornographic sample in the library.
    OcrResults has the following sub-nodes:
    Parameter
    Type
    Description
    Text
    String
    The specific text content recognized by OCR in the image.
    Keywords
    String Array
    Keywords hit by the current moderation scene.
    Location
    Container
    This parameter is used to return the position (X and Y coordinates of the top-left corner, length, width, and rotation angle) of the OCR detection frame in the image for quick location of the recognized text.
    Location has the following sub-nodes:
    Parameter
    Type
    Description
    X
    Float
    This parameter is used to return the pixel position of the abscissa (X) of the top-left corner of the detection frame. It can be combined with other parameters to uniquely determine the size and position of the detection frame.
    Y
    Float
    This parameter is used to return the pixel position of the ordinate of the top-left corner (Y) of the detection frame. It can be combined with other parameters to uniquely determine the size and position of the detection frame.
    Width
    Float
    This parameter is used to return the width of the detection frame (the length starting from the top-left corner and extending to the right on the X axis). It can be combined with other parameters to uniquely determine the size and position of the detection frame.
    Height
    Float
    This parameter is used to return the height of the detection frame (the length starting from the top-left corner and extending down the Y axis). It can be combined with other parameters to uniquely determine the size and position of the detection frame.
    Rotate
    Float
    This parameter is used to return the rotation angle of the detection frame. Valid values: 0–360 (degrees), and the direction is counterclockwise rotation. This parameter can be combined with the X and Y coordinate parameters to uniquely determine the specific position of the detection frame.
    ObjectResults has the following sub-nodes:
    Parameter
    Type
    Description
    Name
    String
    This field is used to return the name of the recognized object, such as person name.
    Location
    Container
    This parameter is used to return the position (X and Y coordinates of the top-left corner, length, width, and rotation angle) of the recognition result in the image for you to quickly locate information.

    Samples

    Request 1: Sync image moderation

    GET /picture.jpg?ci-process=sensitive-content-recognition&detect-type=porn&interval=0&max-frames=1&biz-type=*** HTTP/1.1
    Host: examplebucket-1250000000.cos.ap-chengdu.myqcloud.com
    Date: Tue, 03 Apr 2019 09:06:15 GMT
    Authorization:XXXXXXXXXXXX

    Response 1

    HTTP/1.1 200 OK
    Content-Type: application/xml
    Content-Length: 645
    Date: Tue, 03 Apr 2018 09:06:16 GMT
    Status: 200 OK
    x-cos-request-id: NWFjMzQ0MDZfOTBmYTUwXzZkZV8z****
    
    <RecognitionResult>
          <JobId>xxxxxxxxxxxxxxx</JobId>
          <CompressionResult>0</CompressionResult>
          <Result>1</Result>
          <Label>Porn</Label>
          <SubLabel>SexBehavior</SubLabel>
          <Score>95</Score>
          <PornInfo>
              <Code>0</Code>
              <Msg>OK</Msg>
              <HitFlag>1</HitFlag>
              <Label>xxx</Label>
              <SubLabel>SexBehavior</SubLabel>
              <Score>95</Score>
          </PornInfo>
    </RecognitionResult>

    Request 2: Async image moderation

    GET /picture.jpg?ci-process=sensitive-content-recognitionbiz-type=***&async=1&callback=http://www.callback.com HTTP/1.1
    Host: examplebucket-1250000000.cos.ap-chengdu.myqcloud.com
    Date: Tue, 03 Apr 2019 09:06:15 GMT
    Authorization:XXXXXXXXXXXX

    Response 2

    HTTP/1.1 200 OK
    Content-Type: application/xml
    Content-Length: 645
    Date: Tue, 03 Apr 2018 09:06:16 GMT
    Status: 200 OK
    x-cos-request-id: NWFjMzQ0MDZfOTBmYTUwXzZkZV8z****
    
    <RecognitionResult>
          <JobId>xxxxxxxxxxxxxxx</JobId>
    </RecognitionResult>
    
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