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    Abnormal Image Detection

    Last updated: 2024-02-18 10:36:36
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      Feature Overview

      CI uses the ImageInspect API to detect whether other types of suspicious files are hidden in an image.

      Restrictions

      Format: This feature can detect three types of abnormal images: PNG with TS video stream, BMP with TS video stream, and TS video stream (with only the extension changed).
      Size: The input image cannot be larger than 32 MB, with its width and height not exceeding 30,000 pixels respectively, and the total number of pixels not exceeding 250 million. The width and height of the output image cannot exceed 9,999 pixels respectively. For an animated input image, the total number of pixels (width * height * number of frames) cannot exceed 250 million.

      API Format

      GET /<ObjectKey>?ci-process=ImageInspect HTTP/1.1
      Host: <BucketName-APPID>.cos.<Region>.myqcloud.com
      Date: <GMT Date>
      Authorization: <Auth String>

      Parameters

      Request parameters

      Operation name: ImageInspect.
      Parameter
      Description
      ObjectKey
      Object name, such as folder/sample.jpg.

      Response parameters

      Parameter
      Description
      picSize
      Image size in bytes
      picType
      Image format, such as JPG and PNG.
      suspicious
      Whether non-image files are detected. Valid values: false (no), true (yes).
      suspiciousBeginByte
      The starting byte position of the detected suspicious file in bytes
      suspiciousEndByte
      The ending byte position of the detected suspicious file in bytes
      suspiciousSize
      Size of the detected suspicious file
      suspiciousType
      Type of the detected suspicious file, such as MPEG-TS.

      Examples

      Example 1: Public-read

      Request

      http://examples-1251000004.cos.ap-shanghai.myqcloud.com/sample.jpeg?ci-process=ImageInspect

      Response

      {"picSize":1097476,"picType":"PNG","suspicious":true,"suspiciousBeginByte":120,"suspiciousEndByte":1097475,"suspiciousSize":1097356,"suspiciousType":"MPEG-TS"}

      Example 2: Private-read with a signature carried

      This example obtains the average hue in the same way as in the example above except that a signature is carried. The signature is joined with other parameters using an ampersand (&):
      http://examples-1251000004.cos.ap-shanghai.myqcloud.com/sample.jpeg?q-sign-algorithm=<signature>&ci-process=ImageInspect
      Note:
      You can obtain the value of <signature> by referring to Request Signature.
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