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    1.3.4 • Public • Published


    Arkntools - Depot Recognition

    Depot recognition module for Arknights Toolbox

    NPM version GitHub license GitHub Workflow Status Feedback



    # npm
    npm i @arkntools/depot-recognition
    # yarn
    yarn add @arkntools/depot-recognition


    You need to provide a zip of material images and sorting order of materials in deport. The name of the material must be material ID.


    const fetch = require('node-fetch').default;
    const { DeportRecognizer, isTrustedResult, toSimpleTrustedResult } = require('@arkntools/depot-recognition');
    (async () => {
      const [order, pkg] = await Promise.all(
        ].map(url => fetch(url).then(r => (url.endsWith('.json') ? r.json() : r.buffer()))),
      const dr = new DeportRecognizer({ order, pkg });
      const { data } = await dr.recognize('IMAGE_PATH');
      console.log(data.filter(isTrustedResult)); // full trust result
      console.log(toSimpleTrustedResult(data)); // simple trust result

    Web worker

    Need comlink-loader

    import DepotRecognitionWorker from 'comlink-loader!@arkntools/depot-recognition/worker';
    import { isTrustedResult, toSimpleTrustedResult } from '@arkntools/depot-recognition/tools';
    import { transfer } from 'comlink';
    import order from 'path/to/order.json';
    import pkgURL from 'file-loader!path/to/';
    const initRecognizer = async () => {
      const pkg = await fetch(pkgURL).then(r => r.arrayBuffer());
      const worker = new DepotRecognitionWorker();
      return await new worker.DeportRecognizer(transfer({ order, pkg }, [pkg]));
    (async () => {
      const dr = await initRecognizer();
      const { data } = await dr.recognize('IMG_URL'); // can be blob url
      console.log(data.filter(isTrustedResult)); // full trust result
      console.log(toSimpleTrustedResult(data)); // simple trust result


    If you are using comlink-loader in typescript, you need to add a declaration:

    declare module 'comlink-loader*!@arkntools/depot-recognition/worker' {
      import DepotRecognitionWorker from '@arkntools/depot-recognition/worker/comlinkLoader';
      export * from '@arkntools/depot-recognition/worker/comlinkLoader';
      export default DepotRecognitionWorker;

    Then you can use it as normal:

    import DepotRecognitionWorker, { DepotRecognitionWrap } from 'comlink-loader!@arkntools/depot-recognition/worker';
    let recognizer: DepotRecognitionWrap | undefined;
    (async () => {
      const worker = new DepotRecognitionWorker();
      recognizer = await new worker.DeportRecognizer(/* ... */);



    new DeportRecognizer(config)


    Name Type Description
    config RecognizerConfig Initial config.
    Name Type Description
    order string[] Item IDs, represent the sorting order of materials in deport.
    pkg any A zip of material images, which is a parameter or an array of parameters accepted by JSZip.loadAsync.

    DeportRecognizer.recognize(file, onProgress): Object

    Recognize deport image.


    Name Type Description
    file string | Buffer Image URL or buffer. Can be a blob URL.
    onProgress Function A callback function, will be called when progress update. Its argument is a number start from 0.


    Name Type Description
    data SimilarityResult[] Array of recognition similarity result.
    debug string[] Will contain some base64 images after using setDebug to set debug mode.
      debug: {
        scale: number, // The scaling ratio when the material slice is scaled to 60 * 60
      // Material position
      pos: {
        x: number, // Top left x
        y: number, // Top left y
        l: number, // Side length
      // The distance ratio (0~1) between the four sides of the material and the four sides of the whole image
      view: {
        left: number,
        right: number,
        top: number,
        bottom: number,
      // Similarity
      sim: {
        name: string, // ID of most similar material
        diff: number, // The degree of difference (0~1) between them
        // Comparative record of the material
        diffs: [
            string, // Material ID
            number, // Difference degree
      // Material quantity
      num: {
        img: string,   // Processed digital picture in base64
        text: string,  // The recognition result, may contain non-numeric characters such as spaces ( ) or underscores (_)
        value: number, // The numerical result after removing the non-numeric character, the default is 1 when the number is not recognized
        warn: boolean, // Whether the recognition result (text) is the same as the recognition number (value) after excluding the influence of spaces

    DeportRecognizer.setDebug(enable): void

    Set debug mode.


    Name Type Description
    enable boolean Will output some base64 images in recognition result when enabled.

    isTrustedResult(result): boolean

    Determine whether a similarity result is trustable.


    Name Type Description
    result SimilarityResult Recognition similarity result.

    toSimpleTrustedResult(data): Record<string, number>

    Convert the similarity result array into a simple result object.


    Name Type Description
    data SimilarityResult[] Array of recognition similarity result.


    Name Type Description
    [] number Material ID: quantity




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