Wavelet Transform, Fourier Transform, Machine Learning, Image Compression, Image Processing.
Implementation in Python: #Import the pywt library import pywt #Read in the image image = cv2.imread('sample_image.jpg', 0) #Find the coefficients coeffs = pywt.dwt2(image, 'bior1.3') cA, (cH, cV, cD) = coeffs #Plot the images plt.subplot(121), plt.imshow(cA, cmap='gray') plt.title('Approximation