@phdthesis{katalog5780,
           title = {IMPLEMENTASI IMAGE ENHANCEMENT MENGGUNAKAN HOMOMORPHIC FILTER UNTUK MENGATASI ILLUMINATION EFFECT},
           month = {July},
          author = {Robertus Eric Saputra 22104834},
            year = {2014},
          school = {Universitas Kristen Duta Wacana},
             url = {https://katalog.ukdw.ac.id/5780/},
        keywords = {Pengolahan citra digital, Homomorphic Filter, Grayscale, Fourier Transform,
Gaussian Filter, Contrast Stretching},
        abstract = {This day, digital image processing technology has developed to improve efficiency and effectiveness on human work for image identification process. One of the biggest development in image processing technique is on image enhancement one of the technique used is filtering. On homomorphic filter, image needed to be fix is changed into frequency domain first and then the algorithm to changed spartial domain into frequency domain into
image called Fourier Transform. Image which has problem on illumination can be done by using this homomorphic filter.}
}