Triangle thresholding opencv

1. What is triangle thresholding?
2. How do you use threshold in OpenCV?
3. What is Otsu thresholding OpenCV?
4. What is cv2 adaptive threshold?

What is triangle thresholding?

The triangle method constructs a line between the histogram peak and the farthest end of the histogram. The threshold is the point of maximum distance between the line and the histogram.

How do you use threshold in OpenCV?

Implementing simple thresholding with OpenCV

We must specify a threshold value T. All pixel intensities below T are set to 255. And all pixel intensities greater than T are set to 0. We could also apply the inverse of this binarization by setting all pixels greater than T to 255 and all pixel intensities below T to 0.

What is Otsu thresholding OpenCV?

Consider an image with only two distinct image values (bimodal image), where the histogram would only consist of two peaks. A good threshold would be in the middle of those two values. Similarly, Otsu's method determines an optimal global threshold value from the image histogram.

What is cv2 adaptive threshold?

adaptiveThreshold is the threshold method, again just like the simple thresholding and Otsu thresholding methods. Here we pass in a value of cv2. THRESH_BINARY_INV to indicate that any pixel value that passes the threshold test will have an output value of 0 . Otherwise, it will have a value of 255 .