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Obtaining Image’s Average Hue

Terakhir diperbarui:2021-10-22 14:17:35


    COS uses the imageAve API provided by CI to obtain the average hue of an image. The input image cannot be larger than 32 MB, with its width and height not exceeding 30,000 pixels, and the total number of pixels not exceeding 250 million. The width and height of the output image cannot exceed 9,999 pixels. For an input animated image, the total number of pixels (Width x Height x Number of frames) cannot exceed 250 million pixels.


    Image processing is charged by CI. For detailed pricing, please see the image processing prices of CI.

    API Format



    Operation: imageAve

    Parameter Description
    download_url URL of the input image, formatted as &dxlt;BucketName-APPID>.cos.&dxlt;Region>.myqcloud.com/&dxlt;picture name>
    Example: examplebucket-1250000000.cos.ap-shanghai.myqcloud.com/picture.jpeg


    Example 1: public-read




    {"RGB": "0x736246"}

    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 (&):


    You can obtain the value of <signature> by referring to Request Signature.


    To prevent unauthorized users from accessing or downloading the input image by using a URL that does not contain any processing parameter, you can add the processing parameters to the request signature, making the processing parameters the key of the parameter with the value left empty. The following is a simple example for your reference (it might have expired or become inaccessible). For more information, please see Request Signature.

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