Commit 2709bb3a authored by 袁通's avatar 袁通
Browse files

lab5 finished

parent a5e68267

Lab5_Frequency_Domain_Filtering/EE326_SUSTech.py

+10 −3
Original line number Diff line number Diff line
@@ -74,13 +74,20 @@ def zero_padding(input_image, P, Q): 


# LAB 5



def extract_result(input_image):

def extract_result_eastsouth(input_image):

    x, y = input_image.shape

    output_image = input_image[int(x/2):x, int(y/2):y]



    return output_image





def extract_result_westnorth(input_image):

    x, y = input_image.shape

    output_image = input_image[0:int(x/2), 0:int(y/2)]



    return output_image





def zero_padding_DFT(input_image, P, Q):

    m, n = input_image.shape
@@ -136,7 +143,7 @@ def butterworth_filter(b, a, n, sigma): 
    x = x - a / 2

    y = y - b / 2

    d = np.sqrt(x * x + y * y)

    h = 1/(1+(d/sigma)**(2*n))

    h = 1/((1+(d/sigma))**(2*n))

    return h

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