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MATLAB morphology Dilation Erosion log projection radon transform radon interpolation mutual information joint entropy joint histogram sum of squared differences prewitt canny roberts sobel file input output imclose imopen Rotation fread Registration fopen fclose find closing ssd translation correlation quantization digitization analog to digital aliasing 표본화 정리 nyquist sampling frequency sampling theory spatial frequency frequency domain fourier gaussian fspecial gaussian filter ifftshift fftshift fft2 inverse radon transform backprojection iradon interp2 cubic interpolation bilinear interpolation linear interpolation nearest neighbor 보간 joint PDF cross correlation intensity based tform cp2tform cpselect control point control points image registration 회전변환 imrotate imtranslate warping affine warping transformation affine transformation geometric transformation thresholding houghlines houghpeaks hough transformation hough zerocross hough transform laplacian 선 검출 erode specific value saveas gca gcf fprintf file I/O 문자열잇기 경로설정 변수명설정 tophat trnasformation tophat imtophat spur bwmorph strel opeing imerode imdilate 형태학 find index bin2dec or연산 and연산 dec2bin bitor flipud fliplr changing array histogram equalization histeq imhist contrast brightness rgb2gray ind2rgb Grayscale thin 침식 nyquist Equalization fourier transform Histogram Opening reshape 상하반전 좌우반전 ADC Crop 평행이동 threshold spline indexing 비트연산 figure convolution Phantom correlation coefficient entropy edge remove Scaling shear edge detection mapping Analog Magic sampling 팽창 회전 identity MI MRI SNR Index filter encoding information Bridge abs set