eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2015-05-03 7 2 707 713 10.13005/bpj/545 3274 article Ayush Dogra 1 Parvinder Bhalla 1 Department of ECE, Maharishi Markandeshwar University, Mullana, Ambala, India. Many significant images contains some extent of noise, that is unexplained variation in data disturbances in image intensity which are either uninterpretable or out of interest. Image analysis is often simplified if this unwanted noise is filtered. For this image simplification, filtering in frequency domain is done. In this paper we will demonstrate the image sharpening by Gaussian & Butterworth high pass filter and jot some points revealing their differences. https://biomedpharmajournal.org/vol7no2/image-sharpening-by-gaussian-and-butterworth-high-pass-filter/ Gaussian Butterworth image analysis frequency domain