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ROBOTICS Handbook of Computer Vision Algorithms in Image Algebra Part 5

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Tham khảo tài liệu 'robotics handbook of computer vision algorithms in image algebra part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | where d is a specified nonnegative quantity which represents the cutoff frequency and riir i-.fi -1- lj i The transfer function of the Butterworth highpass filter of order k is given by where c is a scaling constant. Typical values for c are 1 and V 2 1. The transfer function of the exponential highpass filter is given by Typical values for a are 1 and ln v . Image Algebra Formulation Let â E denote the source image where - -f- . Specify the point set . x and define b f i- 1 1 by Once the transfer function is specified the remainder of the algorithm is analogous to the lowpass filter algorithm. Thus one specification would be This pseudocode specification can also be used for the Butterworth and exponential highpass filter transfer functions which are described next. The Butterworth highpass filter transfer function of order k with scaling constant c is given by u v Ẽ u where The transfer function for exponential highpass filtering is given by h u v exp fl 0 fc if 0 0 if 0 0 . Previous Table of Contents Next where d is a specified nonnegative quantity which represents the cutoff frequency and riir i-.fi -1- lj i The transfer function of the Butterworth highpass filter of order k is given by where c is a scaling constant. Typical values for c are 1 and V 2 1. The transfer function of the exponential highpass filter is given by Typical values for a are 1 and ln v . Image Algebra Formulation Let â E denote the source image where - -f- . Specify the point set . x and define b f i- 1 1 by Once the transfer function is specified the remainder of the algorithm is analogous to the lowpass filter algorithm. Thus one specification would be This pseudocode specification can also be used for the Butterworth and exponential highpass filter transfer functions which are described next. The Butterworth highpass filter transfer function of order k with scaling constant c is given by u v Ẽ u where The transfer function for exponential highpass filtering is given by h u v exp fl 0 fc