Object Storage Service:Specify the sharpen parameter to sharpen an OSS image

Use OSS SDKs

The following sample code provides examples on how to sharpen a private image by using OSS SDKs for common programming languages. For more information about how to sharpen a private image by using other programming languages, see SDK references.

import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.GetObjectRequest;
import java.io.File;

public class Demo {
    public static void main(String[] args) throws Throwable {
        // Replace with your bucket's endpoint
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Replace with your bucket's region
        String region = "cn-hangzhou";
        // Read access credentials from environment variables:
        // OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET
        EnvironmentVariableCredentialsProvider credentialsProvider =
            CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        String bucketName = "examplebucket";
        String objectName = "example.jpg";
        // Local path to save the processed image
        String pathName = "D:\\dest.jpg";

        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
        OSS ossClient = OSSClientBuilder.create()
                .endpoint(endpoint)
                .credentialsProvider(credentialsProvider)
                .clientConfiguration(clientBuilderConfiguration)
                .region(region)
                .build();

        try {
            String style = "image/sharpen,100";
            GetObjectRequest request = new GetObjectRequest(bucketName, objectName);
            request.setProcess(style);
            ossClient.getObject(request, new File(pathName));
        } catch (OSSException oe) {
            System.out.println("Error Message: " + oe.getErrorMessage());
            System.out.println("Error Code: " + oe.getErrorCode());
            System.out.println("Request ID: " + oe.getRequestId());
        } catch (ClientException ce) {
            System.out.println("Error Message: " + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

<?php
if (is_file(__DIR__ . '/../autoload.php')) {
    require_once __DIR__ . '/../autoload.php';
}
if (is_file(__DIR__ . '/../vendor/autoload.php')) {
    require_once __DIR__ . '/../vendor/autoload.php';
}
use OSS\Credentials\EnvironmentVariableCredentialsProvider;
use OSS\OssClient;

// Read access credentials from environment variables:
// OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET
$provider = new EnvironmentVariableCredentialsProvider();
// Replace with your bucket's endpoint
$endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
$bucket = "examplebucket";
$object = "example.jpg";
// Local path to save the processed image
$download_file = "D:\\dest.jpg";

$config = array(
    "provider" => $provider,
    "endpoint" => $endpoint,
    "signatureVersion" => OssClient::OSS_SIGNATURE_VERSION_V4,
    "region" => "cn-hangzhou"
);
$ossClient = new OssClient($config);

$style = "image/sharpen,100";
$options = array(
    OssClient::OSS_FILE_DOWNLOAD => $download_file,
    OssClient::OSS_PROCESS => $style
);
$ossClient->getObject($bucket, $object, $options);

# -*- coding: utf-8 -*-
import oss2
from oss2.credentials import EnvironmentVariableCredentialsProvider

# Read access credentials from environment variables:
# OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET
auth = oss2.ProviderAuthV4(EnvironmentVariableCredentialsProvider())
# Replace with your bucket's endpoint
endpoint = 'https://oss-cn-hangzhou.aliyuncs.com'
region = 'cn-hangzhou'
bucket = oss2.Bucket(auth, endpoint, 'examplebucket', region=region)

key = 'example.jpg'
# Local path to save the processed image
new_pic = 'D:\\dest.jpg'

style = 'image/sharpen,100'
bucket.get_object_to_file(key, new_pic, process=style)

package main

import (
	"fmt"
	"os"

	"github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func handleError(err error) {
	fmt.Println("Error:", err)
	os.Exit(-1)
}

func main() {
	// Read access credentials from environment variables:
	// OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET
	provider, err := oss.NewEnvironmentVariableCredentialsProvider()
	if err != nil {
		handleError(err)
	}

	// Replace with your bucket's endpoint
	client, err := oss.New(
		"https://oss-cn-hangzhou.aliyuncs.com", "", "",
		oss.SetCredentialsProvider(&provider),
		oss.AuthVersion(oss.AuthV4),
		oss.Region("cn-hangzhou"),
	)
	if err != nil {
		handleError(err)
	}

	bucket, err := client.Bucket("examplebucket")
	if err != nil {
		handleError(err)
	}

	sourceImage := "example.jpg"
	// Local path to save the processed image
	targetImage := "D://dest.jpg"
	style := "image/sharpen,100"

	err = bucket.GetObjectToFile(sourceImage, targetImage, oss.Process(style))
	if err != nil {
		handleError(err)
	}
}

Use the RESTful API

For custom request handling, call the GetObject operation directly with Signature V4 in the Authorization header. For details, see (Recommended) Include a V4 signature.

GET /oss.jpg?x-oss-process=image/sharpen,100 HTTP/1.1
Host: oss-example.oss-cn-hangzhou.aliyuncs.com
Date: Fri, 28 Oct 2022 06:40:10 GMT
Authorization: OSS4-HMAC-SHA256 Credential=LTAI********************/20250417/cn-hangzhou/oss/aliyun_v4_request,Signature=a7c3554c729d71929e0b84489addee6b2e8d5cb48595adfc51868c299c0c218e