Package Exports

@udarrr/template-matcher
@udarrr/template-matcher/dist/index.js

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Readme

OpenCV 4.1.1 Template Matching Image Finder

It's either standalone or plugin for nutjs project

Installation for standalone

npm i @udarrr/template-matcher

and connect finder to your project

import finder from "@udarrr/template-matcher";

//some examples
const matcheImages = await finder.findMatch({haystack: pathToImage, needle: pathToTemplate});
const matcheWithScreen = await finder.findMatch({needle: pathToTemplate});

const matchesImages = await finder.findMatches({haystack: pathToImage, needle: pathToTemplate});
const matchesWithScreen = await finder.findMatches({needle: pathToTemplate});

Installation for nutjs

npm i @udarrr/template-matcher

and then just use it in your project once

import "@udarrr/template-matcher"` or `require("@udarrr/template-matcher")

Options

Standalone

{
    haystack?: string | Image,
    needle: string | Image,
    confidence?: number,
    searchMultipleScales?: boolean,
    customOptions?: {
                       methodType: MethodNameType; 
                       scaleSteps: Array<number>; 
                       roi: Region; 
                       debug: boolean
                    },
}

Nutjs

//
{
    confidence?: number,
    searchMultipleScales?: boolean,
    customOptions?: {
                       methodType: MethodNameType; 
                       scaleSteps: Array<number>; 
                       roi: Region; 
                       debug: boolean
                    },
}

Values by default

methodType: "TM_CCOEFF" | "TM_CCOEFF_NORMED" | "TM_CCORR" | "TM_CCORR_NORMED" | "TM_SQDIFF" | "TM_SQDIFF_NORMED" by default "TM_CCOEFF_NORMED"
scaleSteps:  [0.9]; by default  [1, 0.9, 0.8, 0.7, 0.6, 0.5]
debug: true | false by default false
confidence: for "TM_SQDIFF" | "TM_SQDIFF_NORMED" confidence by default 0.98 for "TM_CCOEFF" | "TM_CCOEFF_NORMED" | "TM_CCORR" | "TM_CCORR_NORMED" by default 0.8

Disclaimer for nutjs v3

In case using the package with nutjs v3 or above please use precise 2.0.1 version of the package