Face blurring
blur_faces=1
blur_faces=TH,R,S,CR
For censorship or privacy, you can use the blur_faces filter which will fog all faces found in the image by applying Gaussian blur.
Examples
Available options
| parameter | description | default value | description |
|---|---|---|---|
| TH | threshold of the face detection algorithm | 0.15 | threshold of the face detection algorithm |
| R | blur radius | 30 | |
| S | blur sigma (Gaussian distribution) | 1000 | |
| CR | corner radius of the masking shape (use max for an ellipse) |
0 | corner radius of the masking shape use max for an ellipse |
If you are unsure which settings you should use, you can start with default values (blur_faces=1).
Face blurring is most effective for images with enough spatial resolution and sufficiently high quality - images larger than 300 pixels and with enough detail.