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| -rw-r--r-- | content/posts/binarisation-introduction/index.md | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/content/posts/binarisation-introduction/index.md b/content/posts/binarisation-introduction/index.md index 005f2ee..a5c07cc 100644 --- a/content/posts/binarisation-introduction/index.md +++ b/content/posts/binarisation-introduction/index.md @@ -44,10 +44,10 @@ threshold number for everything. However sadly that is not the case, and the variances can be significantly greater for historical documents. There are various algorithms to find an appropriate threshold number for -a given page. A particularly well-known and reasonable one is called the -[Otsu algorithm](https://en.wikipedia.org/wiki/Otsu%27s_method). This -works by splitting the pixels in the image into two classes, one for -background and one for foreground, with the threshold calculated to +a given page. A particularly well-known and commonly used one is called +the [Otsu algorithm](https://en.wikipedia.org/wiki/Otsu%27s_method). +This works by splitting the pixels in the image into two classes, one +for background and one for foreground, with the threshold calculated to minimise the "spread" of both classes. Spread here means how much variation in pixel intensity there is, so by trying to minimise the spread for each class, the threshold aims to find two clusters of |