JPEG Image Compression with a for loop

For an assignment I am tasked with compressing an image. The assignment wants me to use a for loop and go through a quality vector it gave me.

[100:-10:10]

I have no clue how to go about compressing an image and everywhere I look I do not see anything about a quality vector. It also wants me to get the file size then save the images with seperate percentages of quality. I do not know what any of this means and I am looking for help.

[KSSV]

What is the size of image you have? You can use interp2, interp1.

[James Eckloff]

When I use getFilesize('Lena512,bmp') it says ans 263222. and 512x512 grayscale

[James Eckloff]

uint8 as well

Answer 1

[KSSV]

Refer this: https://in.mathworks.com/matlabcentral/answers/399622-resizing-images-using-interp1

[James Eckloff]

Thank you