画像を作成、管理、変換するための Node.js API

NPM 経由で Aspose.Imaging Cloud SDK for Node.js をインストールする

 npm i @asposecloud/aspose-imaging-cloud
or 
npm install aspose-imaging-cloud –save

ライブラリは、Aspose.Imaging 製品ページから直接ダウンロードできます。

Node.js アプリ内で画像を JPEG から PNG に変換する方法

// Get your ClientId and ClientSecret from https://dashboard.aspose.cloud (free registration required).
	const imagingApi = new ImagingApi("MY_CLIENT_SECRET", "MY_CLIENT_ID");

	const request = new ConvertImageRequest({ "sample.jpg", "png", "tempFolder", "My_Storage_Name" });

	imagingApi.convertImage(request).then((response) => {
		fs.writeFile("sample.png", response.body, (err) => {
			if (err) throw err;
		});
	});

Node.js アプリケーション内で 2 つの画像を比較する方法

const imagingApi = new imaging.ImagingApi("yourClientSecret", "yourClientId");
 
// create search context or use existing search context ID if search context was created earlier
const apiResponse = await imagingApi.createImageSearch(
    new imaging.CreateImageSearchRequest());
const searchContextId = apiResponse.id;
 
// specify images for comparing (image ID is a path to image in storage)
const imageInStorage1 = "WorkFolder\Image1.jpg";
const imageInStorage2 = "WorkFolder\Image2.jpg";
  
// compare images
const response = await imagingApi.compareImages(
    new imaging.CompareImagesRequest({ 
        searchContextId, imageId1: imageInStorage1, imageId2: imageInStorage2 }));
const similarity = response.results[0].similarity;

Node.js API 経由で特定の品質設定で JPEG イメージをレンダリングする方法

const inputImage = "high-res-image.jpg";
const outputImage = "rendered-image.jpg";
const folder = "images";

const renderImage = async () => {
  const quality = 100; // Set quality to maximum (100)
  const compressionType = "Baseline"; // Use baseline compression

  const request = new CreateModifiedJpegRequest({
    name: inputImage,
    quality: quality,
    compressionType: compressionType,
    folder: folder,
    storage: null, // Optional storage parameter
  });

  try {
    const result = await imagingApi.createModifiedJpeg(request);
    console.log("Image rendered successfully:", result);
  } catch (error) {
    console.error("Error during image rendering:", error);
  }
};

renderImage();