Repository: opencv
Issue: cv2.matchTemplate returns incorrect output
Labels: bug,optimization,category: imgproc,affected: 3.4,confirmed

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##### System information (version)
<!-- Example
- OpenCV => 4.2
- Operating System / Platform => Windows 64 Bit
- Compiler => Visual Studio 2017
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- OpenCV => 4.5.5
- Operating System / Platform => Ubuntu 20.04 64bit
- Compiler => gcc 9.3.0

##### Detailed description

<!-- your description -->

In some cases, `cv2.matchTemplate` returns incorrect output.  
I attached sample code to reproduce problem.

```python
import numpy as np
import cv2

image = np.full((100, 100), 255, np.uint8)
templ = np.full((25, 25), 255, np.uint8)
result = cv2.matchTemplate(image, templ, cv2.TM_SQDIFF)
```

- The method is `cv2.TM_SQDIFF`.
  - <https://docs.opencv.org/4.5.5/df/dfb/group__imgproc__object.html#ga3a7850640f1fe1f58fe91a2d7583695d>
- The `image` and `templ` have same value(=255).

So, I expected that `result` has 0. But, `cv2.matchTemplate` returns incorrect output.  
These images were saved from the window of highgui. Because, data type of `result` is `CV_32F`.

|with optimization|without optimization<br>`cv2.setUseOptimized(False)`|
|:---:|:---:|
| ![wrong_result_with_opt](https://user-images.githubusercontent.com/2630323/160290082-eae189cf-65b5-4d96-b8f3-5cd390314125.png)| ![wrong_result_without_opt](https://user-images.githubusercontent.com/2630323/160290088-fb1b4587-eea4-4a57-8793-165854a78ebe.png)|

##### Steps to reproduce

<!-- to add code example fence it with triple backticks and optional file extension
    ```.cpp
    // C++ code example
    ```
 or attach as .txt or .zip file
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```python
import numpy as np
import cv2

# cv2.setUseOptimized(False)
image = np.full((100, 100), 255, np.uint8)
templ = np.full((25, 25), 255, np.uint8)
result = cv2.matchTemplate(image, templ, cv2.TM_SQDIFF)
```

##### Output of cv2.getBuildInformation()

I attached the output of `cv2.getBuildInformation()`. [buildinfo.txt](https://github.com/opencv/opencv/files/8358004/buildinfo.txt)

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