MATLAB: How to calculate the accuracy of an image and display it in bar graph
error rate
Example: display bar graph that show accuracy of the original images and also contrast image.
Thank you
i'm very appreciate for your help
Best Answer
To know the accuracy of an image, or of anything, you need to know the absolute true value. Do you know that?
I don't know what you mean by "contrast image". Do you mean that you want to know how to increase or decrease he contrast of an image, or do you want to know the range or the gray levels, or perhaps the range divided by the mean, or something else?
If you are still working on the same project as before:
Average the "normal" images to create a base image. Calculate the maximum MSE (Mean Squared Error) of the "normal" images relative to the base image. That gives you an upper bound on normal images.
Now your classification is just whether MSE of the current image compared to the base image is greater than the threshold or not.
How about doing it all over with adapthisteq() or imadjust()? If you want just the box, then you're going to have to extract it, enhance the contrast with something like imadjust() and then write it back - at least that's one way.
Best Answer