The Imagick::adaptiveThresholdImage() function is an inbuilt function in PHP which is used to select a threshold for each pixel based on intensity values in its local neighborhood. This function allows to thresholding of an image whose global intensity histogram doesn’t contain distinctive peaks.
bool Imagick::adaptiveThresholdImage ( $width, $height, $offset )
Parameters: This function accepts three parameters as mentioned above and described below:
- $width: This parameter is used to set the width of local neighborhood.
- $height: This parameter is used to set the height of local neighborhood.
- $offset: This parameter is used to set mean offset.
Return Value: This function returns TRUE on success.
Below program illustrate the Imagick::adaptiveThresholdImage() function in PHP: