@udarrr/template-matcher

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

Installation for nutjs

npm i @udarrr/template-matcher

Options

Standalone findMatch,findMatches

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

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

(async () => {
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'});
})();

Nutjs v3 find,findAll

npm i @udarrr/template-matcher@2.0.4

{
  providerData?: {
    searchMultipleScales?: boolean;
    methodType?: MethodNameType;
    scaleSteps?: Array<number>;
    roi?: Region;
    debug?: boolean;
  };
};

import { imageResource, screen } from '@nut-tree/nut-js';
import { CustomOptionsType } from '@udarrr/template-matcher/lib/template-matching-finder.class';
import "@udarrr/template-matcher"; //once wherever

(async () => {
  const img = await screen.find<CustomOptionsType>(imageResource("path"),{ providerData: {...}});
  const imgs = await screen.findAll<CustomOptionsType>(imageResource("path"),{ providerData: {...}});
})();

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 2.0.2 version of the package it could be prevented in package.json lile

 "@udarrr/template-matcher": "~2.0.4",