package main

import (
	"gocv.io/x/gocv"
)

// imagesMatch compares two images using template matching
// Returns true if they are very similar (>95% match) - not pixel-identical due to video compression
func imagesMatch(img1, img2 gocv.Mat) bool {
	if img1.Empty() || img2.Empty() {
		return false
	}
	if img1.Rows() != img2.Rows() || img1.Cols() != img2.Cols() {
		return false
	}

	result := gocv.NewMat()
	gocv.MatchTemplate(img1, img2, &result, gocv.TmCcoeffNormed, gocv.NewMat())
	_, maxVal, _, _ := gocv.MinMaxLoc(result)
	result.Close()

	// Video compression means frames are never pixel-identical, use 95% threshold
	return maxVal >= 0.95
}