![](https://img.haomeiwen.com/i11683600/0bef556ab00c37b5.png)
![](https://img.haomeiwen.com/i11683600/bb19465c07c58f52.png)
![](https://img.haomeiwen.com/i11683600/94d453aff09dfa67.png)
![](https://img.haomeiwen.com/i11683600/d33d20bb286ce648.png)
![](https://img.haomeiwen.com/i11683600/864328f9a241fc15.png)
![](https://img.haomeiwen.com/i11683600/1f582dfa5b79ac3e.png)
![](https://img.haomeiwen.com/i11683600/4d46d79770033160.png)
![](https://img.haomeiwen.com/i11683600/3947f47d0f9bad38.png)
![](https://img.haomeiwen.com/i11683600/9e1443e82e5c4297.png)
![](https://img.haomeiwen.com/i11683600/889b1e33e668383a.png)
![](https://img.haomeiwen.com/i11683600/3acc251a65771237.png)
Template matching problem
![](https://img.haomeiwen.com/i11683600/99e2558c782d919b.png)
![](https://img.haomeiwen.com/i11683600/f044febdf8fb34a9.png)
![](https://img.haomeiwen.com/i11683600/a81b2bffc1eb4bf4.png)
![](https://img.haomeiwen.com/i11683600/88a33d6a041c68c4.png)
![](https://img.haomeiwen.com/i11683600/becf3d20b8fa94db.png)
multiplication of the two filters' results
![](https://img.haomeiwen.com/i11683600/4c9e009bb7bf7f8c.png)
![](https://img.haomeiwen.com/i11683600/288b48fb4f58ee25.png)
and
are two filters
is the image
firstly combine the two filters -> save lots of computation
https://towardsdatascience.com/convolution-vs-correlation-af868b6b4fb5
Convolution Vs Correlation
https://www.youtube.com/watch?v=ySAEWNk5Il4
![](https://img.haomeiwen.com/i11683600/0abdaa03283ea2dc.png)
![](https://img.haomeiwen.com/i11683600/fe1f1551971aba66.png)
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