Overview

COS uses the imageMogr2 API provided by CI to blur an image.

An image can be processed:

• Upon download
• Upon upload
• In the cloud

Request

Sample request 1: processing upon download

download_url?imageMogr2/blur/<radius>x<sigma>                            

Sample request 2: processing upon upload

PUT /<ObjectKey> HTTP/1.1
Host: <BucketName-APPID>.cos.<Region>.myqcloud.com
Date: GMT Date
Authorization: Auth String
Pic-Operations: 
{
"is_pic_info": 1,
"rules": [{
    "fileid": "exampleobject",
    "rule": "imageMogr2/blur/<radius>x<sigma>"
}]
}

Sample request 3: processing in-cloud data

POST /<ObjectKey>?image_process HTTP/1.1
Host: <BucketName-APPID>.cos.<Region>.myqcloud.com
Date: GMT Date
Content-length: Size
Authorization: Auth String
Pic-Operations: 
{
"is_pic_info": 1,
"rules": [{
    "fileid": "exampleobject",
    "rule": "imageMogr2/blur/<radius>x<sigma>"
}]
}

Note：

Authorization: Auth String (see Request Signature for details).

Parameters

Operation: blur

Sample

Note：

Processing upon download is used as an example here, which does not store the output image in a bucket. If you need to store the output image, please see Persistent Image Processing and use Processing upon upload or Processing in-cloud data.

This example blurs an image with a radius of 8 and the sigma 5:

http://examples-1251000004.cos.ap-shanghai.myqcloud.com/sample.jpeg?imageMogr2/blur/8x5

Output image: