标题: FPGA的Sobel算法的实现(Verilog+MATLAB+C源码) [打印本页]
作者: panweiwen    时间: 2018-4-29 20:56
标题: FPGA的Sobel算法的实现(Verilog+MATLAB+C源码)
FPGA的Sobel算法的实现 Verilog+MATLAB+C


matlab边缘检测源程序如下:
  1. % CS638-1 Matlab Tutorial
  2. % TA: Tuo Wang
  3. % tuowang@cs.wisc.edu
  4. % Feb 12th, 2010

  6. clear
  7. clc
  8. % Sobel operator:
  9. % read image
  10. lena = imread('abs.jpg');     
  11. % convert it into double type
  12. lena = double(lena);
  13. % get the dimensional information
  14. height = size(lena, 1);
  15. width = size(lena, 2);
  16. channel = size(lena, 3);
  17. % output image
  18. lenaOutput = zeros(size(lena));
  19. % kernels
  20. % Gx = [1 2 1; 0 0 0; -1 -2 -1];
  21. % Gy = [1 0 -1; 2 0 -2; 1 0 -1];
  22. Gx=[-1 0 1;-2 0 2;-1 0 1];
  23. Gy=[1 2 1;0 0 0;-1 -2 -1];
  24. % compute for every pixel
  25. for i = 2 : height - 1
  26.    for j = 2 : width - 1
  27.        for k = 1 : channel
  28.            tempLena = lena(i - 1 : i + 1, j - 1 : j + 1, k);
  29.            x = sum(sum(Gx .* tempLena));
  30.            y = sum(sum(Gy .* tempLena));
  31.            pixValue = sqrt(x^2 + y^2);
  32.            lenaOutput(i, j, k) = pixValue;
  33.        end
  34.    end
  35. end
  36. % display the processed image
  37. lenaOutput = uint8(lenaOutput);
  38. figure;
  39. imshow(lenaOutput);
  40. title('Sobel Edge Detection');
  41. % write the output to disk
  42. imwrite(lenaOutput, 'lenaOutput.jpg', 'jpg')

  44. % original image
  45. figure;
  46. imshow(uint8(lena));
  47. title('Original Image');
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