Install the SDK

npm i dynamsoft-capture-vision-for-node@3.0.1007 -E

Getting Started

const{ LicenseManager, CaptureVisionRouter, EnumPresetTemplate}=require('dynamsoft-capture-vision-for-node');// You can get your trial license from// https://www.dynamsoft.com/customer/license/trialLicense -> Barcode Reader / Capture Vision Suite -> Desktop/Server/Embedded// The current license is valid for only one day.LicenseManager.initLicense('DLS2eyJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSJ9');(async()=>{// you can get the image from https://github.com/Dynamsoft/capture-vision-nodejs-samples/blob/main/AllSupportedBarcodeTypes.png// The second parameter `templateName` tells the SDK how to process this image.letresult=awaitCaptureVisionRouter.captureAsync('./AllSupportedBarcodeTypes.png',EnumPresetTemplate.PT_READ_BARCODES_READ_RATE_FIRST);// refer to https://www.dynamsoft.com/capture-vision/docs/server/programming/cplusplus/api-reference/capture-vision-router/auxiliary-classes/captured-result.html?product=dbr&lang=cplusplus// or run `console.log(require('node:util').inspect(result, false, null))` to see detailsfor(letitemofresult.barcodeResultItems){console.log(item.text);}// Terminate workers so you can exit the process.// Don't call it if you still need to use the SDK.awaitCaptureVisionRouter.terminateIdleWorkers();})();

Note

Guides for tasks such as Label Recognition and Document Capturing are under development. You can refer to theC++ document while writing code for Node.js. Orcontact us for assistance.

Template Customization

/** compatible with "read-barcodes" */PT_READ_BARCODES="ReadBarcodes_Default",/** Represents a barcode reading mode where speed is prioritized. */PT_READ_BARCODES_SPEED_FIRST="ReadBarcodes_SpeedFirst",/** Represents a barcode reading mode where barcode read rate is prioritized. */PT_READ_BARCODES_READ_RATE_FIRST="ReadBarcodes_ReadRateFirst",/** Represents a barcode reading mode for single barcode code detection. */PT_READ_SINGLE_BARCODE="ReadSingleBarcode",

How to Specify the Barcode Formats

Warning

Due to its powerful customization capabilities, the number of configurable parameters in the templates is extensive and relatively complex. To ease your workload, if the preset templates do not meet your requirements, feel free tocontact us for a customized template.

About thecapture like API

interfaceDCVImageData{bytes:Uint8Array;width:number;height:number;stride:number;format:EnumImagePixelFormat;/** EXIF orientation; 1 or undefined means no rotate. */orientation?:number;}

letresult=awaitCaptureVisionRouter.captureAsync(input_data_contains_bytes,{templateName:EnumPresetTemplate.XXXX,dataTransferType:'copy'});

letresults=awaitCaptureVisionRouter.captureMultiPagesAsync('./multi-page.pdf',EnumPresetTemplate.XXXX);for(letresultofresults){consttag=result.originalImageTag;console.log(`# page${tag.pageNumber}/${tag.totalPages}:`);for(letitemofresult.barcodeResultItems){console.log(item.text);}}

Supported OS/Arch

Caution

Since the Dynamsoft Capture Vision 3.x version of.dylib is not fully released, only the barcode reader feature is available on thedarwin platform.

npm i dynamsoft-capture-vision-for-node-lib-<OS>-<arch>@<version> -f -E

Samples

Web Service

AWS Lambda

Special Notes

AI Model for Label Recognizer

npm i dynamsoft-capture-vision-for-node-model@<version> -E

MultipleCaptureVisionRouter Instances

letcvr=newCaptureVisionRouter();letsettings=cvr.outputSettings('<templateName>');settings.foo=bar;cvr.initSettings(settings);letresult=awaitcvr.captureAsync('<image>','<templateName>');