| Tool Name | Hough Circle Transformation |
| Tool ID | 16 |
| Library ID | imagery_opencv |
| Version | 1.0 |
| Author(s) | O.Conrad (c) 2023 |
Please cite SAGA whenever you use it for your publications:
OpenCV Tutorial | Hough Circle Transformation
| Name | Type | Identifier | Description | Constraints |
|---|---|---|---|---|
| Input | ||||
| Grid | grid, input | GRID | ||
| Output | ||||
| Circles | shapes, output | CIRCLES | ||
| Options | ||||
| Unit | choice | UNIT | Available Choices: [0] cells [1] map units Default: 0 | |
| Radius | value range | RADIUS | Default: 1; 30 | |
| Minimum Distance | floating point number | MIN_DIST | Minimum distance between the centers of the detected circles. If the parameter is too small, multiple neighbor circles may be falsely detected in addition to a true one. If it is too large, some circles may be missed. | Minimum: 0.000000 Default: 3 |
| Method | choice | METHOD | Available Choices: [0] Hough gradient [1] Hough gradient (alternative) Default: 0 | |
| Accumulator Resolution | floating point number | RESOLUTION | Inverse ratio of the accumulator resolution to the image resolution. if set to 1, the accumulator has the same resolution as the input image. If set to 2, the accumulator has half as big width and height. For 'Hough gradient (alternative)' the recommended value is 1.5, unless some small very circles need to be detected. | Minimum: 1.000000 Default: 3 |