how to convert RGB image into grayscale pixel by pixel using for loop using matlab

convert Rgb image into gray scale using for loop hint take average of 3 channel to make a single grayscale channel

Answer 1

[DGM]

Would you ask someone to move a pile of sand with a pair of tweezers when you have a shovel laying at your feet?

ipict = mean(rgbpict,3);

https://www.mathworks.com/matlabcentral/answers/605786-how-can-i-covert-rgb-image-to-hsi-and-separate-the-intensity-component-alone#answer_699378