Gaussian Blurring

Last updated: 2020-06-11 16:37:55


    This API imageMogr2 from Tencent Cloud CI is used to blur images in COS.

    Image processing is a paid service, the fees of which are charged by Cloud Infinite. For detailed billing instructions, see Cloud Infinite’s [Billing and Pricing] (

    API Form


    Parameter Description

    Operation name: blur.

    Parameter Description
    download_url URL that is used to access a file. Format: <BucketName-APPID>.cos.<picture region>.<domain>.com/<picture name>,
    such as
    radius<radius> Blurring radius. Value range: 1 - 50.
    sigma<sigma> Standard deviation of normal distribution. The value must be greater than 0.

    This parameter is not supported when the image format is gif.


    This example shows you how to perform Gaussian blur when the blurring radium is 8 and sigma is 5.

    The effect of the Gaussian blur is as follows:

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