1 | initial version |
The usual one is the Gaussian Blur, because a low-pass filter can reduce the detection of false circles. However, take into account that the Hough Circles function incorporates a Canny edge detector that is applied before the actual detection, so maybe you have to better tweak its threshold parameters.
The full example can be found link text.
2 | No.2 Revision |
The usual one is the Gaussian Blur, because a low-pass filter can reduce the detection of false circles. However, take into account that the Hough Circles function incorporates a Canny edge detector that is applied before the actual detection, so maybe you have to better tweak its threshold parameters.