adjacent pixel before and after encryption

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assaad el makhloufi 2020-12-31

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评论： assaad el makhloufi 2021-1-2

I wonder if my result of the adjacent pixel is correct before and after encryption for vertical, horizontal. I'm also including the histograms of my encryption image, with the image results.

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Walter Roberson 2021-1-1

Yes, use png or bmp images.

Image Analyst 2021-1-1

Yes, in general, but then like I said you wouldn't use GLCM I don't think, but maybe you would. Try it and see. But with a binary image like you have the difference between adjacent pixels will always be 0 or some other single number (the gray level difference). Still not sure what you're after because you didn't explain any of me questions in the last paragraph.

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assaad el makhloufi 2021-1-1

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For bmp and png they give the same results . I have need to plot this 3 type of adjacent pixel for my image ( image is generated by envi software map) .

1- histograme of orig image (map)

2- adjacent pixel for orig image( vertical, horizon, diagonal)

3-histograme of encrypted image ( the encryption image was generated by vhdl with text file) , for that i need to converted to encrypted image and display the histogram

4-adjacent pixel for encryption image( vertical, horizon, diagonal)

5- Comparaison between orig and encrypted image.

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Image Analyst 2021-1-2

glcm_demo.m

If you really want to know how many times graylevel1 occurs next to graylevel2, in each direction, then you can use graycomatrix(), like the attached example.

assaad el makhloufi 2021-1-2