Help Center/ Data Security Center/ API Reference/ API Description/ Image Watermarking/ Injecting Invisible Watermarks into Images (Image Addresses)
Updated on 2024-07-29 GMT+08:00

Injecting Invisible Watermarks into Images (Image Addresses)

Function

This API is used to inject invisible text watermarks or invisible image watermarks into an image whose storage address is specified (only a OBS path is supported). DSC returns the injected watermark in a specified storage location (an OBS path). The supported image formats include .jpg, .jpeg, .jpe, .png, .bmp, .dib, .rle, .tiff, .tif, .ppm, .webp, .tga, .tpic, and .gif.

Calling Method

For details, see Calling APIs.

URI

POST /v1/{project_id}/image-address/watermark/embed

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Project ID.

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

User token. It can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is a token.

Table 3 Request body parameters

Parameter

Mandatory

Type

Description

region_id

Yes

String

ID of the region where the current project is located, for example, xx-xx-1.

src_file

Yes

String

Address of the image to be watermarked. Currently, only OBS files are supported. The format is obs://bucket/object, where bucket indicates the name of the OBS bucket in the same region as the current project, and object indicates the full path name of the object. For example, obs://hwbucket/hwinfo/hw.png.

blind_watermark

No

String

Content of the invisible text watermark, which cannot exceed 32 characters. Currently, only digits and uppercase and lowercase letters are supported. Either this parameter or image_watermark must be set.

image_watermark

No

String

Address of the invisible image watermark. Its format requirements are the same as those of src_file. Either image_watermark or blind_watermark must be set. If both are set, only image_watermark takes effect.

dst_file

No

String

Storage address of the watermarked image. The format and requirements are the same as those of the src_file field. If this field is not set, the value of src_file is used by default, that is, the original file is overwritten after the watermark is added.

Response Parameters

Status code: 200

Table 4 Response body parameters

Parameter

Type

Description

region_id

String

ID of the region where the current project is located, for example, xx-xx-1.

watermarked_file

String

Address of the watermarked image on OBS. Currently, only OBS files are supported. The format is obs://bucket/object, where bucket indicates the name of the OBS bucket in the same region as the current project, and object indicates the full path name of the object. For example, obs://hwbucket/hwinfo/hw.png.

Status code: 400

Table 5 Response body parameters

Parameter

Type

Description

error_code

String

Error Code

error_msg

String

Error Message

Example Requests

Embed the invisible watermark "testWaterMark" into the image at obs://hwbucket/test.png in the xx-xx-1 region.

POST /v1/{project_id}/image-address/watermark/embed HTTP/1.1

{
  "region_id" : "xx-xx-1",
  "src_file" : "obs://hwbucket/test.png",
  "blind_watermark" : "testWaterMark"
}

Example Responses

Status code: 200

Request succeeded.

{
  "region_id" : "xx-xx-1",
  "watermarked_file" : "obs://hwbucket/test.png"
}

Status code: 400

Invalid request

{
  "error_code" : "DSC.00000007",
  "error_msg" : "File format error"
}

SDK Sample Code

The SDK sample code is as follows.

Embed the invisible watermark "testWaterMark" into the image at obs://hwbucket/test.png in the xx-xx-1 region.

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.dsc.v1.region.DscRegion;
import com.huaweicloud.sdk.dsc.v1.*;
import com.huaweicloud.sdk.dsc.v1.model.*;


public class CreateImageWatermarkByAddressSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");

        ICredential auth = new BasicCredentials()
                .withAk(ak)
                .withSk(sk);

        DscClient client = DscClient.newBuilder()
                .withCredential(auth)
                .withRegion(DscRegion.valueOf("<YOUR REGION>"))
                .build();
        CreateImageWatermarkByAddressRequest request = new CreateImageWatermarkByAddressRequest();
        CreateImageWatermarkByAddressRequestBody body = new CreateImageWatermarkByAddressRequestBody();
        body.withBlindWatermark("testWaterMark");
        body.withSrcFile("obs://hwbucket/test.png");
        body.withRegionId("xx-xx-1");
        request.withBody(body);
        try {
            CreateImageWatermarkByAddressResponse response = client.createImageWatermarkByAddress(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

Embed the invisible watermark "testWaterMark" into the image at obs://hwbucket/test.png in the xx-xx-1 region.

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkdsc.v1.region.dsc_region import DscRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkdsc.v1 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]

    credentials = BasicCredentials(ak, sk)

    client = DscClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(DscRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = CreateImageWatermarkByAddressRequest()
        request.body = CreateImageWatermarkByAddressRequestBody(
            blind_watermark="testWaterMark",
            src_file="obs://hwbucket/test.png",
            region_id="xx-xx-1"
        )
        response = client.create_image_watermark_by_address(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

Embed the invisible watermark "testWaterMark" into the image at obs://hwbucket/test.png in the xx-xx-1 region.

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    dsc "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dsc/v1"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dsc/v1/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dsc/v1/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        Build()

    client := dsc.NewDscClient(
        dsc.DscClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CreateImageWatermarkByAddressRequest{}
	blindWatermarkCreateImageWatermarkByAddressRequestBody:= "testWaterMark"
	request.Body = &model.CreateImageWatermarkByAddressRequestBody{
		BlindWatermark: &blindWatermarkCreateImageWatermarkByAddressRequestBody,
		SrcFile: "obs://hwbucket/test.png",
		RegionId: "xx-xx-1",
	}
	response, err := client.CreateImageWatermarkByAddress(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Codes

Status Code

Description

200

Request succeeded.

400

Invalid request

Error Codes

See Error Codes.