tencent cloud

Overview

COS has integrated Cloud Infinite (CI), a one-stop professional multimedia solution that offers the image processing features outlined below. For more information, see Image Processing Overview.

Basic Image Processing

When performing basic image processing, you need to specify the image processing rule. For more information, see Image Processing Overview.
For all the code samples, visit GitHub.
Below are some examples:

Scaling

String bucketName = "examplebucket-1250000000";
String key = "qrcode.png";
GetObjectRequest getObj = new GetObjectRequest(bucketName, key);
// Scale the width and height to 50% of the original image.
String rule = "imageMogr2/thumbnail/!50p";
getObj.putCustomQueryParameter(rule, null);
cosClient.getObject(getObj, new File("qrcode-50p.png"));

Cropping

String bucketName = "examplebucket-1250000000";
String key = "qrcode.png";
GetObjectRequest getObj = new GetObjectRequest(bucketName, key);
// Crop the radius of an inscribed circle to an integer greater than 0 and less than half of the shorter side of the original image. The center of the inscribed circle is the center of the image.
String rule = "imageMogr2/iradius/150";
getObj.putCustomQueryParameter(rule, null);
cosClient.getObject(getObj, new File("qrcode-cropping.png"));

Rotation

String bucketName = "examplebucket-1250000000";
String key = "qrcode.png";
GetObjectRequest getObj = new GetObjectRequest(bucketName, key);
// Rotate 90 degrees clockwise
String rule = "imageMogr2/rotate/90";
getObj.putCustomQueryParameter(rule, null);
cosClient.getObject(getObj, new File("qrcode-rotate.png"));

Obtaining average hue

String bucketName = "examplebucket-1250000000";
String key = "qrcode.png";
GetObjectRequest getObj = new GetObjectRequest(bucketName, key);
// Obtaining image's average hue
String rule = "imageAve";
COSObject object = cosClient.getObject(getObj);
COSObjectInputStream objectContent = object.getObjectContent();

Obtaining basic image information

String bucketName = "examplebucket-1250000000";
String key = "qrcode.png";
GetObjectRequest getObj = new GetObjectRequest(bucketName, key);
// Basic image information
String rule = "imageInfo";
getObj.putCustomQueryParameter(rule, null);
COSObject object = cosClient.getObject(getObj);
COSObjectInputStream objectContent = object.getObjectContent();