convert RGB to YIQ and HSV values without function rgb2ntsc and rgb2hsv ([30,80,30]) search with matlab coding

convert RGB to YIQ and HSV values without function

rgb2ntsc and rgb2hsv ([30,80,30]) search with matlab coding

[Cris LaPierre]

Why do you not want to use the built-in functions?

Answer 1

[DGM]

First off, you're asking for something you can't get.

https://www.mathworks.com/matlabcentral/answers/38787-what-can-be-programmed-without-any-built-in-functions

... because you're not asking for what you actually need. If you have a legitimate technical reason that rgb2ntsc() or rgb2hsv() can't work, then you haven't told anyone what it is. Consequently, nobody can give you anything that satisfies those strange requirements.

In all likelihood, you're asking because it's your homework, and if that's the case, then you should know well enough that not only is it your obligation to do the work, it's also your obligation at least make some effort when asking for help. I don't just mean that you apparently haven't bothered to look for existing material.

https://www.mathworks.com/matlabcentral/answers/421371-is-there-a-direct-function-for-rgb-to-yuv-color

https://www.mathworks.com/matlabcentral/answers/165103-how-to-convert-rgb-to-yiq-color-space#answer_823796

https://www.mathworks.com/matlabcentral/answers/412627-how-can-i-convert-rgb-image-to-ntsc-without

https://www.mathworks.com/matlabcentral/fileexchange/15985-fast-rgb2hsv

https://www.mathworks.com/matlabcentral/answers/520437-how-is-computed-the-rgb2hsv-function

https://en.wikipedia.org/wiki/HSL_and_HSV

I mean that as before, you haven't actually said what you need. I'm sure your instructor didn't just say "come up with any way to represent RGB information and then turn it into HSV using any assumed conventions you want" If I gave you a version I wrote, it's a good chance that it wouldn't produce HSV in a numeric representation that your instructor wanted, because I'd have to guess what you were told to do. Certainly, if I gave you a conversion tool that handled this input, it would be wrong.

rgb2hsv([30,80,30]) % this isn't a valid input

... or is this example the actual reason you can't use rgb2hsv() and rgb2ntsc()?