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MATLAB Practice 5

#author("2022-06-06T12:42:14+09:00","default:mori","mori")
#author("2022-06-06T12:48:24+09:00","default:mori","mori")
* Image processing [#l6de6ce2]

-Read and display the image data (smile.jpg) with RGB information. 
 # imread, image, imagesc 
-Convert image data (smile.jpg) to gray scale image and display it. 
 # rgb2gray 
- Calculate the intensity [sqrt{fx^2+fy^2}] from the first derivative of the gray scale image of #2, and perform the following two operations. 
--Make the original image ugly by superimposing on it an intensity that is a multiple of the first derivative. 
--Subtract a multiple of the first derivative from the original image to make it beautiful. 
- Save the image as -jpeg and check if it is visible in other software.
- Save the image as jpeg and check if it is visible in other software.
 # imwrite 
*** Data [#s454e004]
- Prepare the image data by yourself.

*Create and use external functions [#je9232e8]

- Create an external function using the --function statement for the beautification and disfiguration described in the previous exercise.
-- Input
--- Original image and beautification/degradation parameters
-- Output
Output --- the image after processing. 
-Note that RGB, not Gray Scale, should be used for the image.