it’s hard to tell from your screenshot of a screenshot, but do you use a full-resolution template and a downscaled “haystack”? then that is the error. matchTemplate does not do any multiscale detection.
my latest writeup and some more:
- node.js - deno template matching using OpenCV gives no results - Stack Overflow
- Detecting zone with some color and text with openCV in python - Stack Overflow
- How to find how much the arrow is rotated? - #4 by crackwitz
- matchTemplate and old games graphics - #11 by crackwitz
use TM_SQDIFF, never TM_CCORR*.
all these useless youtube tutorials show the same bad code and these youtubers never understand what it does, so they can’t explain what it does, or why it sucks.